JP2011243321A - Dye-sensitized solar cell element module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a dye-sensitized solar cell element which hardly has a connection defect, and a manufacturing method of easily manufacturing the dye-sensitized solar cell element.SOLUTION: The dye-sensitized solar cell element 10 has an oxide semiconductor electrode layer having a first electrode layer 11 formed on one surface of a resin-made substrate 1a or 1b and a porous layer 12 formed on the first electrode layer and containing metal oxide semiconductor fine particles carrying a dye sensitizer, a counter electrode layer having a second electrode layer 21 formed on the other surface of the resin-made substrate and a catalyst layer 22 formed on the second electrode layer, and an electrolyte layer 3 provided between the porous layer and catalyst layer and including a redox pair, and a conductive connection portion 4 which connects first electrode layers, a first electrode layer and a second electrode layer, or second electrodes of adjacent dye-sensitized solar cell elements to each other is formed between the electrode layers to penetrate one resin-made substrate from outside.

Description

  The present invention relates to a dye-sensitized solar cell element module that is unlikely to cause poor connection, and a method for manufacturing a dye-sensitized solar cell element module capable of easily manufacturing the dye-sensitized solar cell element module. It is.

  In recent years, environmental problems such as global warming caused by an increase in carbon dioxide have become serious, and countermeasures are being promoted worldwide. In particular, active research and development on solar cells using solar energy as a clean energy source with a low environmental impact is underway. As such solar cells, single crystal silicon solar cells, polycrystalline silicon solar cells, amorphous silicon solar cells, compound semiconductor solar cells and the like have already been put into practical use, but these solar cells have high production costs, etc. There is a problem. Therefore, as a solar cell that has a small environmental load and can reduce the manufacturing cost, a dye-sensitized solar cell has attracted attention and research and development has been promoted.

  Further, in the dye-sensitized solar cell, since a larger output voltage is required for practical use, a plurality of dye-sensitized solar cell elements are connected to form a dye-sensitized solar cell element module. (For example, Patent Document 1).

  As a method for forming such a dye-sensitized solar cell element module, for example, after producing individual dye-sensitized solar cell elements, the dye-sensitized solar cell element modules are connected to each other using wiring. Can be mentioned. However, the above method has a problem that the formation process is complicated because it is necessary to wire each of the dye-sensitized solar cell elements.

  Therefore, a method of forming a plurality of dye-sensitized solar cell elements between two substrates and connecting the respective dye-sensitized solar cell elements inside the two substrates has been attempted. Yes. As such a method, for example, by forming the oxide semiconductor electrode layer, the electrolyte layer, and the counter electrode layer used in each dye-sensitized solar cell element by slightly shifting the formation position, adjacent dyes are formed. A method of connecting the electrode layers of the dye-sensitized solar cell element by placing the electrode layers of the sensitized solar cell element facing each other and arranging a metal paste between the opposing electrode layers can be exemplified.

  However, in the above method, in the step of adjusting the formation position of each component used in the dye-sensitized solar cell element, it is difficult to align the respective components, so the adjacent dyes There has been a problem that it may cause a connection failure between the electrode layers of the sensitized solar cell element.

  Here, in the dye-sensitized solar cell element module, conventionally, a glass substrate is used as the base material, but in recent years, the dye-sensitized solar cell module is desired to be flexible. It has been studied to use a flexible substrate as a base material. However, as a pair of base materials used in the dye-sensitized solar cell module, the substrate having flexibility is used, and the electrode layers of each dye-sensitized solar cell element are arranged by the above-described method of arranging the metal paste. Since the distance between the electrode layers of the adjacent dye-sensitized solar cell elements may change because the substrate is curved, there is a possibility that the electrode layers are separated from each other, resulting in poor connection. There was a problem.

  Therefore, in the method of connecting the respective dye-sensitized solar cell elements inside the two substrates described above, it is difficult to sufficiently connect the adjacent dye-sensitized solar cell elements. was there.

  Therefore, in the dye-sensitized solar cell element module, a method for easily connecting each dye-sensitized solar cell element without causing poor connection is required.

JP 2007-299545 A

  The present invention provides a high-quality dye-sensitized solar cell element module that is easy to manufacture and hardly causes poor connection, and a dye-sensitized type that can easily manufacture the dye-sensitized solar cell element module. The main object is to provide a method for manufacturing a solar cell element module.

  The present invention has been made to solve the above-described problems, and includes a pair of flexible resin substrates, and at least two or more dye-sensitized solar cell elements formed between the resin substrates. A dye-sensitized solar cell module, wherein the dye-sensitized solar cell element has a first electrode layer formed on one surface of the resin substrate, and the first electrode layer. An oxide semiconductor electrode layer having a porous layer containing metal oxide semiconductor fine particles formed and supported by a dye sensitizer, and a second electrode layer formed on the surface of the other resin substrate, And a counter electrode layer having a catalyst layer formed on the second electrode layer, and an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer, and adjacent to each other First electrode of dye-sensitized solar cell element Between the first electrode layer and the second electrode layer, or between the second electrode layers, conductive connection portions for connecting these electrode layers are formed. Provided is a dye-sensitized solar cell module characterized by being formed so as to penetrate any one of resin substrates from the outside.

  According to the present invention, since the conductive connection portion is formed so as to penetrate at least one of the one resin substrates from the outside, the dye sensitization is performed between the pair of resin substrates. After forming the solar cell element, the conductive connecting portion can be formed through the resin substrate, so that the dye-sensitized solar cell element module of the present invention can be easily manufactured. It becomes possible. Further, according to the present invention, since the conductive connection portion is formed between the electrode layers of the adjacent dye-sensitized solar cell elements, a dye-sensitized solar cell element module with few connection failures is obtained. be able to. In addition, since the conductive connection portion can be formed to penetrate from the outside, after forming the dye-sensitized solar cell element between the pair of resin substrates, the formation position of the conductive connection portion, By appropriately selecting the number, shape, and the like and forming the conductive connection portion, various forms of dye-sensitized solar cell module can be obtained.

  In the present invention, the first electrode layer of one of the dye-sensitized solar cell elements among the adjacent dye-sensitized solar cell elements is formed on the surface of the one resin substrate, and The second electrode layer of the other dye-sensitized solar cell element is formed on the surface of the other resin substrate, and the conductive connection portion is formed on the one resin substrate. For connecting the first electrode layer of the one dye-sensitized solar cell element and the second electrode layer of the other dye-sensitized solar cell element formed on the other resin substrate. In addition, it is preferable that at least one of the resin substrates is formed so as to penetrate from the outside. When the dye-sensitized solar cell module of the present invention is configured as described above, it is possible to easily connect the electrode layers respectively formed on the opposing resin substrates.

In the present invention, in the above configuration, it is preferable that the conductive connection portion is formed so as to penetrate at least two of the one resin substrate from the outside. By providing the conductive connection portions at a plurality of locations, the electrode layers can be more reliably connected, and thus the dye-sensitized solar cell module of the present invention can be of high quality. Become.
Further, even when the distance between the electrode layers of the adjacent dye-sensitized solar cell elements is formed to be separated, the electrode layers can be easily connected by forming the conductive connection portion. It becomes possible.

  In the present invention, the first electrode layer or the second electrode layer of each of the adjacent dye-sensitized solar cell elements is formed on the surface of the one resin substrate, and the conductive The conductive connecting portion is for electrically connecting at least two through portions penetrating at least two of the one resin substrate from the outside and the two or more through portions on the outside of the resin substrate. It is preferable to connect the first electrode layer or the second electrode layer of the adjacent dye-sensitized solar cell elements by having the outer conductive portion. When the dye-sensitized solar cell module of the present invention is configured as described above, the electrode layers formed on the same resin substrate can be easily connected.

  In the present invention, it is preferable that the conductive connection portion is formed so as to penetrate from the outside of the one resin substrate to the outside of the other resin substrate. Thereby, since it becomes possible to fix the formation position of the said electroconductive connection part in the dye-sensitized solar cell element module of this invention, the electrode layer of the said adjacent dye-sensitized solar cell element is more suitable. Can be connected to.

  In this invention, it is preferable that the said electroconductive connection part consists of metal members. When the conductive connection portion is made of a metal member, the conductive connection portion can be easily formed between the electrode layers of the dye-sensitized solar cell element.

  The present invention provides a dye-sensitized solar cell module having a pair of flexible resin substrates and at least two or more dye-sensitized solar cell elements formed between the resin substrates. A method comprising a first electrode layer formed on the surface of one of the resin substrates, and metal oxide semiconductor fine particles formed on the first electrode layer and carrying a dye sensitizer An oxide semiconductor electrode layer having a porous layer, a second electrode layer formed on the surface of the other resin substrate, and a counter electrode layer having a catalyst layer formed on the second electrode layer; A dye-sensitized solar cell element forming step for forming at least two or more dye-sensitized solar cell elements having an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer; Adjacent dye sensitized thick Provided between the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer of the battery element so as to penetrate the resin substrate from the outside of one of the pair of resin substrates. There is provided a method for producing a dye-sensitized solar cell module, comprising: a conductive connection portion forming step of forming a conductive connection portion.

  According to the present invention, by having the conductive connection portion forming step, two or more dye-sensitized solar cell elements are formed between the pair of resin substrates, and then the conductive connection portion is provided. Since the electrode layers of adjacent dye-sensitized solar cell elements can be connected, a dye-sensitized solar cell module can be easily manufactured. In the conductive connection part forming step, various forms of dye-sensitized solar cell module can be easily manufactured by selecting the formation position, number, shape, etc. of the conductive connection part. it can.

  In the dye-sensitized solar cell element module of the present invention, the conductive connecting portion is formed so as to penetrate the resin substrate from the outside. After forming the dye-sensitized solar cell element, the dye-sensitized solar cell element module can be easily manufactured by forming the conductive connection portion. Moreover, since it has the said electroconductive connection part, the connection failure between the electrode layers of each dye-sensitized solar cell element can be decreased. Furthermore, it is possible to provide various forms of dye-sensitized solar cell module by appropriately selecting the formation position, number, shape, and the like of the conductive connection portion in the dye-sensitized solar cell module. .

It is a schematic sectional drawing which shows an example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is the schematic which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is a schematic sectional drawing which shows another example of the dye-sensitized solar cell element module of this invention. It is process drawing which shows an example of the manufacturing method of the dye-sensitized solar cell element module of this invention.

  Hereinafter, the dye-sensitized solar cell element module of the present invention and the method for manufacturing the dye-sensitized solar cell element module for manufacturing the dye-sensitized solar cell element module of the present invention will be described in detail.

A. Dye-sensitized solar cell element module The dye-sensitized solar cell element module of the present invention includes a pair of resin substrates having flexibility and at least two or more dye-sensitized types formed between the resin substrates. A dye-sensitized solar cell module having a solar cell element, wherein the dye-sensitized solar cell element includes a first electrode layer formed on a surface of one of the resin substrates, and the first electrode An oxide semiconductor electrode layer having a porous layer containing metal oxide semiconductor fine particles formed on an electrode layer and carrying a dye sensitizer, and a second layer formed on the surface of the other resin substrate. A counter electrode layer having a two-electrode layer and a catalyst layer formed on the second electrode layer; and an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer. Adjacent dye sensitizing type Conductive connection portions for connecting the electrode layers are formed between the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer of the solar cell element. The portion is formed so as to penetrate at least one of the resin substrates from the outside.

  Here, the dye-sensitized solar cell element used for a general dye-sensitized solar cell element module needs to receive sunlight from at least one of the oxide semiconductor electrode layer side or the counter electrode layer side. Therefore, in the present invention, at least one of the pair of resin substrates is a transparent resin substrate, and the electrode layer formed on the transparent resin substrate is a transparent electrode layer. And

  According to the present invention, since the conductive connection portion is formed so as to penetrate at least one of the one resin substrate from the outside, the dye increasing agent is interposed between the pair of resin substrates. After the formation of the sensitive solar cell element, the conductive connecting portion can be formed from the outside of the resin substrate so that the dye-sensitized solar cell element module of the present invention can be easily obtained. It becomes possible. In addition, according to the present invention, since the conductive connection portion is formed between the electrode layers of the adjacent dye-sensitized solar cell elements, a dye-sensitized solar cell element module with few connection failures is obtained. be able to. In addition, since the conductive connection portion can be formed to penetrate from the outside, after forming the dye-sensitized solar cell element between the pair of resin substrates, the formation position of the conductive connection portion, By appropriately selecting the number, shape, and the like and forming the conductive connection portion, various forms of dye-sensitized solar cell module can be obtained.

  The dye-sensitized solar cell module of the present invention can be considered in two modes depending on the positional relationship of the respective electrode layers of adjacent dye-sensitized solar cell elements connected by the conductive connection portion. it can. Specifically, as the above-described two aspects, in the adjacent dye-sensitized solar cell elements, the electrode layers connected by the conductive connection portions are formed on different surfaces of the resin substrate (hereinafter referred to as the following). , And a mode in which the electrode layers connected by the conductive connecting portions in the adjacent dye-sensitized solar cell elements are respectively formed on the same surface of the resin substrate (hereinafter referred to as the first mode). The second embodiment). Each aspect will be described below.

I. First Embodiment Dye-Sensitized Solar Cell Element Module First, the first embodiment of the dye-sensitized solar cell element module of the present invention will be described.
In the dye-sensitized solar cell element module of this embodiment, in the adjacent dye-sensitized solar cell element, the electrode layers connected by the conductive connection portions are formed on the surfaces of the different resin substrates. That is, on the surface of one of the resin substrates, among the adjacent dye-sensitized solar cell elements, the first electrode layer or the second electrode layer of one of the dye-sensitized solar cell elements. One of the electrode layers is formed, and the electrode layer of the first electrode layer or the second electrode layer of the other dye-sensitized solar cell element is formed on the surface of the other resin substrate. The conductive connection portion is formed on the electrode layer of the one dye-sensitized solar cell element formed on the one resin substrate and the electrode layer formed on the other resin substrate. The other dye-sensitized sun To connecting the electrode layer of the Motoko Ike, those which are formed so as to penetrate from the outside either at least one of the above resin substrate.

  Hereinafter, each structure used for the dye-sensitized solar cell module of this embodiment will be described.

1. Conductive connection part The conductive connection part used in this embodiment is the electrode layer of the one dye-sensitized solar cell element formed on the surface of the one resin substrate and the other resin substrate. In order to connect the electrode layer of the other dye-sensitized solar cell element formed on the surface, it is formed so as to penetrate at least one of the one resin substrate from the outside. is there.

  The conductive connection portion includes the electrode layer of the one dye-sensitized solar cell element formed on the surface of the one resin substrate and the other electrode formed on the surface of the other resin substrate. Depending on the positional relationship with the electrode layer of the dye-sensitized solar cell element, it can be divided into two modes. More specifically, the electrode layer of the one dye-sensitized solar cell element and the other dye-sensitized solar cell element, wherein the conductive connection portion is formed so that at least a part thereof is opposed. The one of the dye-sensitized solar cells in which the above-mentioned electrode layer is connected to the electrode layer (hereinafter referred to as the first embodiment) and the conductive connection portion is formed without being opposed to each other. And an embodiment (hereinafter referred to as a second embodiment) in which the electrode layer of the battery element is connected to the electrode layer of the other dye-sensitized solar cell element. Hereinafter, each aspect of the electroconductive connection part used for this aspect is demonstrated.

(1) 1st aspect The electroconductive connection part of this aspect is formed so that at least one part may oppose, The said electrode layer of said one dye-sensitized solar cell element, and said other dye-sensitized type The above-mentioned electrode layer of the solar cell element is connected.

The conductive connection part of this embodiment and the dye-sensitized solar cell module of this embodiment using the same will be described with reference to the drawings. FIG. 1 is a schematic cross-sectional view showing an example of the dye-sensitized solar cell module of this embodiment.
As shown in FIG. 1, the dye-sensitized solar cell element module 100 of this embodiment is formed between a pair of flexible resin substrates 1a and 1b and a resin substrate 1a and a resin substrate 1b having flexibility. And at least two or more dye-sensitized solar cell elements 10 (three dye-sensitized solar cell elements in FIG. 1). The dye-sensitized solar cell element 10 includes a first electrode layer 11 formed on the surface of the resin substrate 1a and a metal formed on the first electrode layer 11 and carrying a dye sensitizer. An oxide semiconductor electrode layer having a porous layer 12 containing oxide semiconductor fine particles, a second electrode layer 21 formed on the surface of the resin substrate 1b, and a catalyst layer 22 formed on the second electrode layer 21 And an electrolyte layer 3 including a redox pair provided between the porous layer 12 and the catalyst layer 22. FIG. 1 shows an example in which the electrolyte layer 3 is a solid electrolyte layer.

  Moreover, the dye-sensitized solar cell element module 100 of this aspect is the first of the one dye-sensitized solar cell element 10 formed on the resin substrate 1a in the adjacent dye-sensitized solar cell elements 10. The electrode layer 11 is formed so as to face the second electrode layer 21 of the other dye-sensitized solar cell element 10 formed on the resin substrate 1b. In order to connect 11 and the second electrode layer 21, the conductive connecting portion 4 is formed so as to penetrate from the outside of the resin substrate 1 a to the outside of the resin substrate 1 b.

As such a conductive connection part, the electrode layer of the one dye-sensitized solar cell element formed on the surface of the one resin substrate and the surface of the other resin substrate were formed. There is no particular limitation as long as the electrode layer of the other dye-sensitized solar cell element can be connected. For example, as shown in FIG. 1, it is formed on a resin substrate 1a. The first electrode layer 11 and the second electrode layer 21 formed on the resin substrate 1b may be connected to each other, or as shown in FIG. The first electrode layer 11 formed and the first electrode layer 11 formed on the resin substrate 1b may be connected to each other. As shown in FIG. 2B, on the resin substrate 1a. Formed on the second electrode layer 21 and the resin substrate 1b. It may be one that connects the electrode layer 21.
Here, since the dye-sensitized solar cell element is usually formed at the time of manufacturing the dye-sensitized solar cell element module, the formation process can be an easy process. Preferably, only the first electrode layer or only the second electrode layer is formed on the resin substrate. Therefore, the dye-sensitized solar cell module preferably has only the first electrode layer or the second electrode layer on one of the resin substrates. Therefore, in this embodiment, since the dye-sensitized solar cell element can be easily manufactured, as shown in FIG. 1, the first electrode layer 11 and the resin substrate 1b formed on the resin substrate 1a are used. It is preferable to connect the second electrode layers 21 formed above. FIG. 2 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell element module of this embodiment, and reference numerals not described can be the same as those in FIG. Is omitted.

The conductive connecting portion is not particularly limited as long as it can connect the electrode layers of the adjacent dye-sensitized solar cell elements. For example, as shown in FIG. It may be formed so as to penetrate from the outside of one resin substrate to the outside of the other resin substrate. As shown in FIG. It may be formed so as to penetrate and contact the electrode layer formed on the other resin substrate. FIG. 3 shows an example in which the conductive connection portion 4 is formed so as to penetrate the resin substrate 1a from the outside and come into contact with the second electrode layer 21 formed on the resin substrate 1b. ing. Moreover, since the reference numerals not described in FIG. 3 can be the same as those in FIG. 1, the description thereof is omitted here.
Although not shown, it is formed so as to penetrate the one resin substrate from the outside, penetrate the electrode layer formed on the other resin substrate, and not penetrate the other resin substrate. It may be.

  In this aspect, it is particularly preferable that the conductive connection portion is formed so as to penetrate from the outside of the one resin substrate to the outside of the other resin substrate. Thereby, since it becomes possible to fix the formation position of the said electroconductive connection part in the dye-sensitized solar cell element module of this aspect, the electrode layer of the said adjacent dye-sensitized solar cell element is more suitable. Can be connected to.

  The conductive connecting portion is not particularly limited as long as it is formed so as to penetrate at least one of the one resin substrates from the outside. For example, as shown in FIG. In addition, it may be formed so as to penetrate at least one of the one resin substrate from the outside, or at least two of the one resin substrate from the outside It may be formed so as to penetrate (see, for example, FIG. 6B). In this aspect, it is preferable that the resin substrate is formed so as to penetrate at least two of the one resin substrates from the outside. Since the electrode layers of the adjacent dye-sensitized solar cell elements can be reliably connected by the conductive connecting portions formed at a plurality of locations, a dye-sensitized solar cell module having no connection defect is obtained. Because it can.

Moreover, in this aspect, the said electroconductive connection part will not be specifically limited if it can connect the electrode layer of the said adjacent dye-sensitized solar cell element, For example, it shows in FIG. Thus, the structure which the electroconductive connection part 4 contacts the porous layer 12 of the dye-sensitized solar cell element 10, the solid electrolyte layer 3, etc. may be sufficient.
In general, in a dye-sensitized solar cell element, a short circuit occurs when the first electrode layer and the second electrode layer in the same dye-sensitized solar cell element are in contact with each other. Since the conductive connection portion connects the electrode layers of the separate dye-sensitized solar cell elements, the porous layer of the one dye-sensitized solar cell element and the solid electrolyte layer are connected to the conductive connection portion. This is because an internal short circuit does not occur when the first electrode layer and the second electrode layer in the same dye-sensitized solar cell element are not in contact with each other.
FIG. 4 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell module of this embodiment. Moreover, since reference numerals not described in FIG. 4 can be the same as those in FIG. 1, description thereof is omitted here.

  In this aspect, it is more preferable that only the electrode layer is formed in the region where the conductive connection portion is formed. This is because the electrode layers can be more suitably connected using the conductive connection portion. In addition, since an electrolyte containing iodide ions may be used for the solid electrolyte layer of the dye-sensitized solar cell element, when the conductive connection portion and the solid electrolyte layer are in contact with each other, This is because the conductive connection portion may be corroded by the fluoride ions.

  Further, the conductive connecting portion is not particularly limited as long as it is formed so as to be able to connect the electrode layers of the adjacent dye-sensitized solar cell elements. For example, as shown in FIG. In addition, in the dye-sensitized solar cell element module 100, the thickness of the portion where the conductive connection portion 4 is formed is equal to the thickness of the portion where the dye-sensitized solar cell element 10 is formed. As shown in FIG. 5A, the thickness of the portion where the conductive connection portion 4 is formed is greater than the thickness of the portion where the dye-sensitized solar cell element 10 is formed. 5 (b), the conductive connection portion 4 may be formed of the electrode layer of one dye-sensitized solar cell element 10 and the other dye-sensitized type. The electrode layer of the solar cell element 10 (in FIG. Electrode layer 11 and the second electrode layer 21) and may be one that is formed so as to contact the. In particular, the conductive connection portion is formed so as to contact the electrode layer of one dye-sensitized solar cell element and the electrode layer of the other dye-sensitized solar cell element. preferable. This is because the electrode layers of the adjacent dye-sensitized solar cell element modules can be more suitably connected.

  Here, the “thickness of the portion where the conductive connection portion is formed” in this embodiment means that the portion of the resin substrate 1a where the conductive connection portion 4 is formed as shown in FIG. The distance t from the outer surface of the resin substrate 1b to the outer surface of the resin substrate 1b, and “the portion where the dye-sensitized solar cell element is formed” means dye-sensitized as shown in FIG. This indicates the distance u from the outer surface of the resin substrate 1a where the solar cell element 10 is formed to the outer surface of the resin substrate 1b. FIG. 5 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell element module of the present embodiment, and reference numerals not described can be the same as those in FIG. Description of is omitted.

  The shape of the conductive connection portion used in this embodiment is not particularly limited as long as it is a shape that can connect the electrode layers of the adjacent dye-sensitized solar cell elements. For example, FIG. As shown in FIG. 6B, it may be a planar conductive connection 4 or a columnar conductive connection 4 as shown in FIG. 6B. Part 4 is more preferable. Since the conductive connection portion is planar, the area of the conductive connection portion contributing to conduction between the electrode layers can be increased, so that a higher-quality dye-sensitized solar cell element module can be obtained. It becomes possible. Here, FIG. 6 is a schematic view of the AA cross section of the dye-sensitized solar cell module shown in FIG. 1 observed from an oblique direction. Note that reference numerals not described in FIG. 6 can be the same as those in FIG. 1, and thus description thereof is omitted here.

  The conductive connecting portion is not particularly limited as long as it is provided between the electrode layers of at least one pair of adjacent dye-sensitized solar cell elements in the dye-sensitized solar cell element module of this aspect, and is not limited to any adjacent one. It can be provided between the electrode layers of the matching dye-sensitized solar cell element. In this aspect, it is preferable that the said electroconductive connection part is especially provided in the electrode layer of all the adjacent dye-sensitized solar cell elements in the dye-sensitized solar cell element module of this aspect. Thereby, since it is possible to suppress a connection failure between the respective electrode layers, a dye-sensitized solar cell element module having a large output voltage can be obtained.

  The conductive connection portion is not particularly limited as long as it has the above-described configuration and can connect the electrode layers of adjacent dye-sensitized solar cell elements. The part is preferably made of a metal member. When a metal member is used as the conductive connection portion, the conductive connection portion can be easily formed because the metal member can be easily penetrated from the outside of one of the resin substrates. Because it becomes.

  The metal used for such a metal member is not particularly limited as long as it has rigidity, and specifically, stainless steel, copper, aluminum, nickel, iron, silver, lead, zinc, titanium, Examples thereof include chromium, tungsten, gold, platinum, and alloys thereof. In this embodiment, among the metals described above, it is preferable to use a metal having high corrosion resistance against iodide ions. Since the electrolyte layer of the dye-sensitized solar cell element may contain iodide ions, the dye of this embodiment can be obtained by making the metal member highly resistant to iodide ions. This is because it is possible to prevent deterioration of the sensitized solar cell module over time.

  The shape of the metal member is not particularly limited as long as it can connect one electrode layer of adjacent dye-sensitized solar cell elements, and has a planar configuration. Alternatively, it may have a columnar configuration. Specifically, the metal member may have a rectangular cross-sectional shape, the metal member may have a wedge shape, or a needle shape.

  Specific examples of the metal member include a metal wire and a metal plate.

  The metal member is not particularly limited as long as it can penetrate at least one of the one resin substrates from the outside, but the other resin from the outside of the one resin substrate is not limited. It is preferable that it can penetrate to the outside of the substrate. Further, in this case, as shown in FIG. 7, the metal member (conductive connection portion 4) is fixed at the front end to prevent the metal member from being detached from the dye-sensitized solar cell module 100. It is preferable to have part n. FIG. 7 shows another example of the dye-sensitized solar cell element module of this embodiment, and the reference numerals not described can be the same as those in FIG. To do.

  Such a fixing part is not particularly limited as long as it can prevent the metal member from being detached from the dye-sensitized solar cell element module. It can be formed by bending the tip. Moreover, it is possible to form by fixing the front-end | tip of the said metal member to a resin-made board | substrate using a resin material.

Moreover, as a conductive connection part of this aspect, two or more penetrating parts penetrating at least two of the one of the resin substrates from the outside and two or more penetrating parts between the two or more penetrating parts are made of the resin. You may have an outer side electroconductive part for making it conduct | electrically_connect on the outer side of a board | substrate.
In addition, since the electroconductive connection part which has the said structure is demonstrated in the term of "(2) 2nd aspect" mentioned later, description here is abbreviate | omitted.

(2) Second Aspect Next, a second aspect of the conductive connecting portion will be described.
In the conductive connection part of this aspect, the electrode layer of the one dye-sensitized solar cell element and the other dye-sensitized solar cell in which the conductive connection part is formed without being opposed to each other. This is to connect the electrode layer of the element. In addition, the conductive connection part of this aspect includes at least two penetration parts penetrating at least two of the one resin board from the outside from the outside and between the two or more penetration parts of the resin board. The outer conductive part for conducting on the outside is an essential component.

The conductive connection part of this embodiment and the dye-sensitized solar cell module of this embodiment using the same will be described with reference to the drawings. FIG. 8 is a schematic cross-sectional view showing an example of the dye-sensitized solar cell module of this embodiment.
As shown in FIG. 8, the dye-sensitized solar cell element module 100 of this embodiment is formed between a pair of flexible resin substrate 1a and resin substrate 1b, and between resin substrate 1a and resin substrate 1b. And at least two or more dye-sensitized solar cell elements 10 (in FIG. 8, two dye-sensitized solar cell elements), and the first electrode formed on the surface of the resin substrate 1a The layer 11 and the second electrode layer 21 formed on the surface of the resin substrate 1b do not face each other and are formed apart from each other.
Moreover, the dye-sensitized solar cell element module 100 of this aspect is the first of the one dye-sensitized solar cell element 10 formed on the resin substrate 1a in the adjacent dye-sensitized solar cell elements 10. The electrode layer 11 and the second electrode layer 21 of the other dye-sensitized solar cell element 10 formed on the resin substrate 1b do not face each other and are formed apart from each other. The first electrode layer 11 and the second electrode layer 21 are connected to each other between the two through portions 4a penetrating from the outside of the resin substrate 1a to the outside of the resin substrate 1b, and between the two through portions 4a outside the resin substrate 1a. The electroconductive connection part 4 which has the outer side electroconductive part 4b for making it conduct | electrically_connect is provided. FIG. 8 shows an example in which the conductive connection portion 4 has a fixing portion n at the tip of the through portion 4a. Note that reference numerals not described in FIG. 8 can be the same as those in FIG. 1, and thus description thereof is omitted here.

  As the positional relationship between the through portions and the adjacent electrode layers of the adjacent dye-sensitized solar cell element in the conductive connection portion of this aspect, the adjacent dye-sensitized solar cell element using the conductive connection portion is used. The positional relationship is not particularly limited as long as the electrode layers can be connected.

Here, the positional relationship between the penetrating portion and the electrode layers of the conductive connecting portion of this aspect will be described with reference to FIG. FIG. 9 is a schematic cross-sectional view showing an example of the dye-sensitized solar cell element module of this embodiment. In FIG. 9, the conductive connecting portion 4 has at least two through portions 4a penetrating the resin substrate 1a from the outside, and an outer conductive for connecting the two through portions 4a outside the resin substrate 1a. Part 4b. For example, as shown in FIG. 9A, the positional relationship between one through portion 4a of the conductive connecting portion 4 having such a configuration and the first electrode layer 11 formed on the resin substrate 1a. The through portion 4a may be formed so as to penetrate only the resin substrate 1a and at least come into contact with the first electrode layer 11. As shown in FIG. 9B, the through portion 4a The resin substrate 1a, the first electrode layer 11, and the resin substrate 1b may be formed so as to penetrate therethrough. Although not shown, the penetration portion of the conductive connection portion penetrates only the one resin substrate, further penetrates the electrode layer on the penetrated resin substrate, and does not penetrate the opposing resin substrate. It may be formed as follows.
Further, as a positional relationship between the other through portion 4a of the conductive connection portion 4 and the second electrode layer 21 formed on the resin substrate 1b, for example, as shown in FIG. 9A, the through portion 4a. May be formed so as to penetrate through the resin substrate 1a and at least come into contact with the second electrode layer 21, and as shown in FIG. 9B, the through portion 4a includes the resin substrate 1a and the catalyst layer. 22, the second electrode layer 21, and the resin substrate 1 b may be formed. Although not shown, the penetration part of the conductive connection part is formed so as to penetrate the one resin substrate and penetrate only the electrode layer formed on the opposite resin substrate. Also good.

  Even when the conductive connection portion used in this embodiment has the above-described configuration, each through portion of the conductive connection portion is connected to the other from the outside of one of the resin substrates, as shown in FIG. It is preferable to be formed so as to penetrate to the outside of the resin substrate. Thereby, since the formation position of the said electroconductive connection part in a dye-sensitized solar cell element module can be fixed, it connects suitably the electrode layer of an adjacent dye-sensitized solar cell element using the said electroconductive connection part. This is because it becomes possible.

  Furthermore, the electroconductive connection part of this aspect may have a 2 or more penetration part with respect to each electrode layer of the said adjacent dye-sensitized solar cell element. Since the conductive connection portion has the above-described configuration, each electrode layer of adjacent dye-sensitized solar cell elements can be more reliably connected using a plurality of penetration portions. The performance of the sensitive solar cell element module can be improved.

  The conductive connecting portion is not particularly limited as long as it is formed so as to be able to connect the electrode layers of the adjacent dye-sensitized solar cell elements, and as shown in FIG. In the sensitized solar cell module 100, the thickness of the portion where the conductive connection portion 4 is formed is equal to the thickness of the portion where the dye-sensitized solar cell device 10 is formed. Although not shown, the thickness of the portion where the conductive connection portion is formed is formed to be thinner than the thickness of the portion where the dye-sensitized solar cell element is formed. May be.

  The shape of the conductive connection portion used in this embodiment is not particularly limited as long as it is a shape that can connect the electrode layers of adjacent dye-sensitized solar cell elements. In such a shape of the conductive connection portion, the shape of the through portion of the conductive connection portion may be the same as the shape of the conductive connection portion described in the section “(1) First aspect”. Since it is possible, explanation here is omitted.

  Further, in the shape of the conductive connecting portion, the shape of the outer conductive portion is not particularly limited as long as it is a shape capable of conducting between the two or more penetrating portions outside the resin substrate. Instead, it can be selected and determined as appropriate according to the shape of the penetrating portion. Specific examples include a planar shape and a linear shape.

  The conductive connecting portion is not particularly limited as long as it has the two or more through portions and the outer conductive portion and can connect the electrode layers of the adjacent dye-sensitized solar cell elements. However, it is preferable that the conductive connection portion is made of a metal member. When a metal member is used as the conductive connection portion, the conductive connection portion can be easily formed because the metal member can be easily penetrated from the outside of one of the resin substrates. Because it becomes.

  About the metal used for the said metal member, since it can be set as the thing described in the term of "(1) 1st aspect", description here is abbreviate | omitted.

  Moreover, when the said metal member is used as the said electroconductive connection part, the said 2 or more penetration part and an outer side electroconductive part may be formed integrally, and may be formed separately. In this aspect, it is more preferable that the two or more through portions and the outer conductive portion are integrally formed. This is because the metal member can be easily processed and handled easily.

  In addition, the shape of the metal member is not particularly limited as long as the metal member is arranged to connect the electrode layers of the adjacent dye-sensitized solar cell elements. Examples of the cross-sectional shape of the metal member include a U-shape and a comb shape. In addition, in the said metal member, since the shape of the part corresponded to the said penetration part can be made to be the same as that of the shape of the metal member demonstrated in the term of "(1) 1st aspect", description here Is omitted. In the metal member, the shape of the portion corresponding to the outer conductive portion is appropriately selected according to the shape of the portion corresponding to the penetrating portion.

  In the conductive connection part of this aspect, since the points other than the above can be the same as those of the conductive connection part described in the section “(1) First aspect”, description thereof is omitted here. .

2. Next, a pair of resin substrates used in this embodiment will be described. Here, the resin substrate has flexibility.
The above flexibility refers to bending when a force of 5 KN is applied in the fine ceramic bending test method of JIS R1601.

  Here, the dye-sensitized solar cell element used in the dye-sensitized solar cell element module needs to receive sunlight from at least one of the oxide semiconductor electrode layer side and the counter electrode layer side. Therefore, at least one of the pair of resin substrates needs to be a transparent resin substrate. Normally, transparent resin substrates are used for both resin substrates.

  The transparency of the transparent resin substrate is such that the dye-sensitized solar cell element module of this embodiment can transmit sunlight so that it can function by receiving sunlight. Although there is no particular limitation as long as it is present, in this embodiment, it is more preferable that the total light transmittance is 80% or more. The transparency is a value measured by a measuring method based on JIS K7361-1: 1997.

  As the resin substrate, for example, a substrate made of a polyethylene terephthalate film (PET), a polyester naphthalate film (PEN), or a polycarbonate film (PC) can be used.

  The thickness of the resin substrate used in this embodiment can be appropriately selected according to the use of the dye-sensitized solar cell element module, and is usually in the range of 10 μm to 2000 μm. In particular, it is preferably in the range of 50 μm to 1800 μm, and more preferably in the range of 100 μm to 1500 μm.

3. Dye-sensitized solar cell element Next, the dye-sensitized solar cell element used in this embodiment will be described. The dye-sensitized solar cell element used in this embodiment is formed on the surface of one of the resin substrates, and formed on the first electrode layer, and carries the dye-sensitizer. An oxide semiconductor electrode layer having a porous layer containing metal oxide semiconductor fine particles, a second electrode layer formed on the surface of the other resin substrate, and formed on the second electrode layer A counter electrode layer having a catalyst layer; and an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer. Hereinafter, each member will be described.

(1) Oxide Semiconductor Electrode Layer The oxide semiconductor electrode layer used in this embodiment includes a first electrode layer formed on the surface of the one resin substrate, and the first electrode, out of the pair of resin substrates. It has a porous layer containing metal oxide semiconductor fine particles formed on an electrode layer and carrying a dye sensitizer.
Hereinafter, each of the first electrode layer and the porous layer will be described.

(A) 1st electrode layer The 1st electrode layer used for this aspect is demonstrated. The first electrode layer used in this embodiment is formed on the surface of one resin substrate.

  Further, the first electrode layer may be an electrode layer having transparency or an electrode layer not having transparency. As described above, since the dye-sensitized solar cell element used in this embodiment needs to receive sunlight from at least one of the oxide semiconductor electrode layer side or the counter electrode layer side, the oxide semiconductor When sunlight is received from the electrode layer side, the first electrode layer needs to be a transparent electrode layer. In this case, a transparent resin substrate is used as the resin substrate on which the first electrode layer is formed.

When the first electrode layer is an electrode layer having transparency, specific examples include a transparent electrode layer, a mesh electrode layer, and an electrode layer having a transparent electrode layer and a mesh electrode layer. Moreover, a metal layer can be mentioned when the 1st electrode layer is an electrode layer which does not have transparency.
Each will be described below.

(I) Transparent electrode layer The material constituting the transparent electrode layer used in this embodiment is not particularly limited as long as it is transparent and has a predetermined conductivity. Or a metal oxide can be used.
The metal oxide is not particularly limited as long as it has desired conductivity. Especially, it is preferable that the metal oxide used in this embodiment has transparency to sunlight. Examples of such metal oxides having transparency to sunlight include SnO ₂ , ZnO, a compound in which tin is added to indium oxide (ITO), fluorine-doped SnO ₂ (hereinafter referred to as FTO), and oxidation. A compound obtained by adding zinc oxide to indium (IZO) can be given.
On the other hand, examples of the conductive polymer material include polythiophene, polyethylene sulfonic acid (PSS), polyaniline (PA), polypyrrole, and polyethylenedioxythiophene (PEDOT). Moreover, these can also be used in mixture of 2 or more types.

  The transparent electrode layer used in this embodiment may be composed of a single layer, or may be composed of a plurality of layers laminated. Examples of the configuration in which a plurality of layers are stacked include a mode in which layers made of materials having different work functions are stacked, and a mode in which layers made of different metal oxides are stacked.

The thickness of the transparent electrode layer used in this embodiment is usually preferably in the range of 5 nm to 2000 nm, and particularly preferably in the range of 10 nm to 1000 nm. If the thickness is thicker than the above range, it may be difficult to form a homogeneous transparent electrode layer, or the total light transmittance may be lowered and it may be difficult to obtain good photoelectric conversion efficiency. If the thickness is thinner than the above range, the conductivity of the transparent electrode layer may be insufficient.
In addition, the said thickness shall point out the total thickness which totaled the thickness of all the layers, when a transparent electrode layer is comprised from a several layer.

  Since the method for forming the transparent electrode layer on the substrate can be the same as a general method for forming an electrode layer, description thereof is omitted here.

(Ii) Mesh electrode layer Next, the mesh electrode layer will be described. The mesh electrode layer used in this embodiment is an electrode layer formed in a mesh shape using a conductive material.

  Examples of the mesh shape of the mesh electrode layer include a triangular lattice shape, a parallelogram lattice shape, and a hexagonal lattice shape.

  The thickness of the mesh electrode layer is preferably in the range of 0.01 μm to 10 μm. This is because when the thickness of the mesh electrode layer exceeds the above range, it takes a lot of materials, time, and the like for forming the mesh electrode layer, so that the manufacturing efficiency is reduced and the manufacturing cost is increased. Further, when the thickness of the mesh electrode layer is less than the above range, the mesh electrode layer may not sufficiently perform the function as an electrode layer.

  The ratio of the openings of the mesh electrode layer used in this embodiment is preferably in the range of 50% to 99.9%. When the ratio of the openings of the mesh electrode layer is less than the above range, the dye-sensitized solar cell element of this aspect cannot sufficiently receive sunlight from the first electrode layer side. This is because there is a possibility of lowering. Moreover, it is because it may become difficult for the said mesh electrode layer to improve the function as an electrode layer when the ratio of the opening part of the said mesh electrode layer exceeds the said range.

  The line width and mesh pitch of the mesh electrode layer are appropriately selected according to the shape of the dye-sensitized solar cell element used. The line width of the mesh electrode layer is 0. 0.02 μm to 10 mm, preferably 1 μm to 2 mm, particularly preferably 10 μm to 1 mm. The mesh electrode layer has a mesh pitch of 1 μm to 500 μm, especially 5 μm. It is preferable to be within a range of ˜100 μm, particularly within a range of 10 μm to 50 μm.

  The material of the mesh electrode layer is not particularly limited as long as it is a conductive material, and specifically, the same metal as the metal layer described in the section “(iv) Metal layer” described later. Etc.

(Iii) Electrode layer having transparent electrode layer and mesh electrode layer As the first electrode layer used in this embodiment, the electrode layer having the transparent electrode layer and the mesh electrode layer described above can be used. By adopting the above configuration, when the conductivity of the transparent electrode layer is insufficient, it can be supplemented by the mesh electrode layer, so that the dye-sensitized solar cell element of this embodiment has more excellent power generation efficiency. There is an advantage that can be.
Note that the transparent electrode layer and the mesh electrode layer are the same as those described above, and a description thereof will be omitted here.

(Iv) Metal layer As described above, when the first electrode layer used in this embodiment is an electrode layer that does not have transparency, a metal layer can be used. The metal layer is not particularly limited as long as it has flexibility, but the material is copper, aluminum, titanium, chromium, tungsten, molybdenum, platinum, tantalum, niobium, zirconium, zinc, various stainless steels, and their stainless steels. An alloy etc. are mentioned, Titanium, chromium, tungsten, various stainless steels, and those alloys are desirable. Moreover, when the 1st electrode layer which consists of a metal layer is used, as the thickness of the said metal layer, it has flexibility and the self-support property which can form the porous layer mentioned above on the 1st electrode layer Is not particularly limited as long as it is within a range where it can be imparted, but usually preferably within a range of 5 μm to 1000 μm, more preferably within a range of 10 μm to 500 μm, and within a range of 20 μm to 200 μm. More preferably.

(B) Porous layer The porous layer used in this embodiment is formed on the first electrode layer described above, and includes metal oxide semiconductor fine particles having a dye sensitizer carried on the surface thereof.

(I) Metal oxide semiconductor fine particles The metal oxide semiconductor fine particles used in this embodiment are not particularly limited as long as they are made of a metal oxide having semiconductor characteristics. Examples of the metal oxide constituting the metal oxide semiconductor fine particles used in this embodiment include TiO ₂ , ZnO, SnO ₂ , ITO, ZrO ₂ , MgO, Al ₂ O ₃ , CeO ₂ , Bi ₂ O ₃ , and Mn. ₃ O ₄ , Y ₂ O ₃ , WO ₃ , Ta ₂ O ₅ , Nb ₂ O ₅ , La ₂ O _{3 and the} like can be mentioned.

Among these, in this embodiment, it is most preferable to use metal oxide semiconductor fine particles made of TiO ₂ . This is because TiO ₂ is particularly excellent in semiconductor characteristics.

  The average particle size of the metal oxide semiconductor fine particles used in this embodiment is usually preferably in the range of 1 nm to 10 μm, and particularly preferably in the range of 10 nm to 1000 nm.

(Ii) Dye sensitizer The dye sensitizer used in the present embodiment is not particularly limited as long as it can absorb light and generate an electromotive force. Examples of such a dye sensitizer include organic dyes and metal complex dyes. Examples of the organic dyes include acridine, azo, indigo, quinone, coumarin, merocyanine, phenylxanthene, indoline, and carbazole dyes. In this embodiment, it is preferable to use a coumarin dye among these organic dyes. Further, as the metal complex dye, it is preferable to use a ruthenium dye, and it is particularly preferable to use a ruthenium bipyridine dye and a ruthenium terpyridine dye which are ruthenium complexes. This is because such a ruthenium complex has a wide wavelength range of light to be absorbed, so that the wavelength range of light that can be photoelectrically converted can be greatly expanded.

(Iii) Arbitrary component The porous layer used in this embodiment may contain an arbitrary component in addition to the metal oxide semiconductor fine particles. As an arbitrary component used for this aspect, resin can be mentioned, for example. It is because the brittleness of the porous layer used in this embodiment can be improved by containing the resin in the porous layer. Examples of such a resin include polyvinyl pyrrolidone, ethyl cellulose, caprolactan, and the like.

(Iv) Others The thickness of the porous layer used in this embodiment is usually preferably in the range of 1 μm to 100 μm, and particularly preferably in the range of 3 μm to 30 μm.

  The method for forming a porous layer used in this embodiment can be the same as the method for forming a porous layer used in forming a general dye-sensitized solar cell element. Is omitted.

(2) Counter Electrode Layer Next, the counter electrode layer used in the present aspect includes a second electrode layer formed on the surface of the other resin substrate of the pair of resin substrates, and the second electrode. It has a catalyst layer formed on the layer. Each will be described below.

(A) 2nd electrode layer As a 2nd electrode layer used for this aspect, if it can be used as a counter electrode layer of a dye-sensitized solar cell element by forming the catalyst layer mentioned later, It is not specifically limited, The electrode layer which has transparency may be sufficient, and the electrode layer which does not have transparency may be sufficient. As described above, in the dye-sensitized solar cell element used in this embodiment, it is necessary to receive sunlight from at least one of the oxide semiconductor electrode layer side or the counter electrode layer side. Therefore, when sunlight is received from the counter electrode layer side, a transparent electrode layer is used as the second electrode layer. In this case, a transparent resin substrate is used as the resin substrate on which the second electrode layer is formed.

  About the said 2nd electrode layer, since the thing similar to what was demonstrated by the term of the said 1st electrode layer can be used, description here is abbreviate | omitted.

(B) Catalyst layer The catalyst layer used in this embodiment is formed on the second electrode layer. By forming the catalyst layer in the second electrode layer, the dye-sensitized solar cell element used in this embodiment can be made more excellent in power generation efficiency. Examples of such a catalyst layer include, for example, an embodiment in which Pt is vapor-deposited on the second electrode layer, polyethylene dioxythiophene (PEDOT), polystyrene sulfonic acid (PSS), polyaniline (PA), paratoluenesulfonic acid. Although the aspect which forms a catalyst layer from (PTS) and these mixtures can be mentioned, it is not this limitation.

  The thickness of such a catalyst layer is preferably in the range of 1 nm to 10 μm, more preferably in the range of 10 nm to 1000 nm, and particularly preferably in the range of 10 nm to 500 nm.

(3) Electrolyte layer Next, the electrolyte layer used in this embodiment will be described.
The electrolyte layer used in this embodiment is formed between the porous layer and the catalyst layer, and includes an oxidation-reduction pair.

  The redox couple used for the electrolyte layer in this embodiment is not particularly limited as long as it is generally used for the electrolyte layer of a dye-sensitized solar cell. Among them, the redox couple used in this embodiment is preferably a combination of iodine and iodide and a combination of bromine and bromide.

Examples of the combination of iodine and iodide used in this embodiment as the redox couple, for example, can be cited LiI, NaI, KI, and metal iodide such as CaI _2, a combination of I _2.
Further, examples of the combination of bromine and bromide include a combination of a metal bromide such as LiBr, NaBr, KBr, and CaBr ₂ and Br ₂ .

  The electrolyte layer in this embodiment may contain additives such as a crosslinking agent, a photopolymerization initiator, a thickener, and a room temperature molten salt as other compounds other than the redox couple.

  The electrolyte layer used in this embodiment may be an electrolyte layer in any form of gel, solid or liquid, but is more preferably a solid electrolyte layer. This is because the solid electrolyte layer is less likely to cause problems such as liquid leakage and is easy to handle.

(4) Other Configurations The dye-sensitized solar cell element used in this embodiment is not particularly limited as long as it has the oxide semiconductor electrode layer, the counter electrode layer, and the electrolyte layer. Any necessary members can be added as appropriate. As such a member, as shown in FIG. 10, for example, a sealing material 5 for sealing used when the liquid or gel electrolyte layer 3 is used as the electrolyte layer can be exemplified. Since such a sealing material 5 can be the same as that used for a general dye-sensitized solar cell element, description thereof is omitted here. FIG. 10 is a schematic cross-sectional view showing an example of the dye-sensitized solar cell module of this embodiment, and reference numerals that are not described can be the same as those in FIG. Omitted.

4). Other members The dye-sensitized solar cell element module of the present embodiment is not particularly limited as long as it has the above-described conductive connection portion, resin substrate, and dye-sensitized solar cell element. Other configurations can be appropriately selected and used. As such a configuration, a sealing portion for sealing a through hole formed at a position penetrating the conductive connecting portion from the outside of the resin substrate can be exemplified. In this aspect, by providing the sealing portion, it is possible to prevent moisture in the atmosphere from entering the dye-sensitized solar cell element module. Here, when moisture permeates into the dye-sensitized solar cell module, the dye-sensitized solar cell element elapses due to desorption of the dye-sensitized agent carried on the porous layer. There is a possibility of deterioration. Therefore, it is preferable to form the sealing member.

  Since the sealing member can be formed by using a general resin material, description thereof is omitted here.

5). Dye-sensitized solar cell element module In this aspect, in the adjacent dye-sensitized solar cell element, the electrode layers connected by the conductive connecting portions are formed on the surfaces of the different resin substrates. There is no particular limitation as long as it is present. Among the various aspects of the dye-sensitized solar cell element module of the present embodiment, one of the dye-sensitized solar cell elements among the adjacent dye-sensitized solar cell elements is formed on the surface of the one resin substrate. The first electrode layer of the solar cell element is formed, and the second electrode layer of the other dye-sensitized solar cell element is formed on the surface of the other resin substrate, and the conductive The first electrode layer of the one dye-sensitized solar cell element formed on the one resin substrate and the other dye-sensitized type formed on the other resin substrate. In order to connect the second electrode layer of the solar cell element, it is more preferable that the solar cell element is formed so as to penetrate at least one of the resin substrates from the outside. This is because the dye-sensitized solar cell module having the above configuration can be easily manufactured.

  The dye-sensitized solar cell element module of the present embodiment is not particularly limited as long as it has the above-described conductive connection portion, and will be described later “II. Dye-sensitized solar cell device module of the second embodiment. The electroconductive connection part demonstrated by the term of "may be formed.

II. Next, the 2nd aspect of the dye-sensitized solar cell element module of this invention is demonstrated.
In the dye-sensitized solar cell module according to this aspect, the electrode layers connected by the conductive connecting portions in adjacent dye-sensitized solar cell elements are formed on the same surface of the resin substrate. That is, either the first electrode layer or the second electrode layer of one of the dye-sensitized solar cell elements among the adjacent dye-sensitized solar cell elements on the surface of the one resin substrate. And the electrode layer of either the first electrode layer or the second electrode layer of the other dye-sensitized solar cell element is formed, and the conductive connection portion is at least the above-mentioned 2 or more penetrating one or more of the resin substrates from the outside and penetrating at least two or more of the one resin substrate from the outside Penetration When, is characterized in that it has an outer conductive portion for conducting between the two or more through portions outside of the resin substrate.

The dye-sensitized solar cell module of this embodiment will be described with reference to the drawings. FIG. 11 is a schematic cross-sectional view showing an example of the dye-sensitized solar cell module of this embodiment.
As shown in FIG. 11, the dye-sensitized solar cell element module 100 of this embodiment is formed between a pair of flexible resin substrate 1a and resin substrate 1b, and between resin substrate 1a and resin substrate 1b. And at least two or more dye-sensitized solar cell elements 10 (two dye-sensitized solar cell elements in FIG. 11). The dye-sensitized solar cell element 10 includes a first electrode layer 11 formed on the surface of the resin substrate 1a and a metal formed on the first electrode layer 11 and carrying a dye sensitizer. An oxide semiconductor electrode layer having a porous layer 12 containing oxide semiconductor fine particles, a second electrode layer 21 formed on the surface of the resin substrate 1b, and a catalyst layer 22 formed on the second electrode layer 21 And an electrolyte layer 3 including a redox pair provided between the porous layer 12 and the catalyst layer 22. FIG. 11 shows an example in which the electrolyte layer 3 is a solid electrolyte layer.

  Moreover, as shown in FIG. 11, the dye-sensitized solar cell element module 100 of this aspect is one dye-sensitized solar cell element formed on the resin substrate 1a in the adjacent dye-sensitized solar cell element 10. In order to connect the first electrode layer 11 of the solar cell element 10 and the first electrode layer 11 of the other dye-sensitized solar cell element 10 formed on the resin substrate 1a, the resin substrate 1a is connected from the outside. It has the conductive connection part 4 formed so that it may penetrate two places, and the conductive connection part 4 is each of the adjacent dye-sensitized solar cell elements 10 mentioned above from the outside of the resin substrate 1a. Having two through portions 4a penetrating the first electrode layer 11 and further penetrating through the resin substrate 1b, and an outer conductive portion 4b for electrically connecting the two through portions 4a from the outside of the resin substrate 1a. It is.

  The difference between the dye-sensitized solar cell element module of the present embodiment and the dye-sensitized solar cell module of the first embodiment described above is that the conductivity connecting the electrode layers of the adjacent dye-sensitized solar cell elements is the same. The resin substrate, the dye-sensitized solar cell element, and other members can be the same as the dye-sensitized solar cell module of the first aspect, and therefore here. The description in is omitted. Hereinafter, the electroconductive connection part used for this aspect is demonstrated.

1. Conductive connection portion The conductive connection portion used in this embodiment is at least two penetration portions penetrating at least two of the one resin substrate from the outside and between the two or more penetration portions. An outer conductive portion for conducting on the outside of the resin substrate is an essential component.

As such a conductive connection portion, the electrode layer of one of the dye-sensitized solar cell elements formed on the surface of the same resin substrate and the above-mentioned of the other dye-sensitized solar cell element The electrode layer is not particularly limited as long as it can be connected to the electrode layer. For example, as shown in FIG. 11, the first electrode layer 11 and the resin substrate 1a formed on the resin substrate 1a. The first electrode layers 11 formed above may be connected to each other, or as shown in FIG. 12A, the first electrode layer 11 formed on the resin substrate 1a and the resin substrate. The second electrode layers 21 formed on 1a may be connected to each other. As shown in FIG. 12B, the second electrode layer 21 formed on the resin substrate 1a and the resin electrode may be used. Connects between the second electrode layers 21 formed on the substrate 1a. It may be.
Here, as described in the section of “1. Dye-sensitized solar cell element module of the first aspect” described above, usually, when the dye-sensitized solar cell element is formed on the resin substrate. In order to make the forming process easy, only the first electrode layer or only the second electrode layer is formed on the same resin substrate. Therefore, in this aspect, as shown in FIG. 11 and FIG. 12B, the second electrode layer formed on the surface of the same resin substrate or the first electrode layer formed on the surface of the same resin substrate. It is preferable to connect the electrode layers. FIG. 12 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell module according to this embodiment, and reference numerals that are not described may be the same as those in FIG. Is omitted.

  In addition, the formation position of the conductive connection portion in the present embodiment is not particularly limited as long as it is a position where the electrode layers of the adjacent dye-sensitized solar cell elements can be connected. For example, FIG. As shown in FIG. 5, the resin substrate 1a on the side where at least the electrode layers (the first electrode layers 11 in FIG. 11) are formed may be formed so as to penetrate from the outside. 13, at least the electrode layer (each first electrode layer 11 in FIG. 13) may be formed so as to penetrate the resin substrate 1 b on the side where the electrode layer is not formed. In this embodiment, it is more preferable that the resin substrate is formed so as to penetrate from the outside at least on the side on which the electrode layer is formed. This is because the electrode layers can be more reliably connected. FIG. 13 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell module according to this embodiment, and reference numerals not described can be the same as those in FIG. Is omitted.

  In addition, the positional relationship between the penetration part of the conductive connection part used in this aspect and each electrode layer of the adjacent dye-sensitized solar cell element is the dye-sensitized solar element adjacent to the conductive connection part. There is no particular limitation as long as it is a positional relationship that can connect the electrode layers of the battery element. For example, the penetrating part may be in contact with each of the electrode layers, or the penetrating part may penetrate each of the electrode layers.

  More specifically, as shown in FIG. 14, the penetrating portion 4a penetrates only the resin substrate 1a, and the positional relationship between the penetrating portion of the conductive connecting portion and each electrode layer in the present embodiment is the first. It may be formed so as to be in contact with at least the electrode layer 11, and as shown in FIG. 11, the penetrating portion 4 a penetrates the resin substrate 1 a, the first electrode layer 11, and the resin substrate 1 b. It may be formed. Although not shown, the penetrating portion may be formed so as to penetrate one resin substrate, further penetrate the electrode layer on the penetrated resin substrate, and not penetrate the other resin substrate. FIG. 14 is a schematic cross-sectional view showing another example of the dye-sensitized solar cell module of this embodiment, and the reference numerals not described can be the same as those in FIG. Is omitted.

  In this aspect, it is more preferable that the penetration part of the conductive connection part is formed so as to penetrate from the outside of one resin substrate to the outside of the other resin substrate. Thereby, since the formation position of the electroconductive connection part in the dye-sensitized solar cell element module of this aspect can be fixed, it can connect the electrode layer of an adjacent dye-sensitized solar cell element more suitably. This is because it becomes possible.

  The conductive connecting portion is not particularly limited as long as it is formed so as to be able to connect the electrode layers of the adjacent dye-sensitized solar cell elements, and as shown in FIG. In the sensitized solar cell module 100, the thickness of the portion where the conductive connection portion 4 is formed is equal to the thickness of the portion where the dye-sensitized solar cell device 10 is formed. Although not shown, the thickness of the portion where the conductive connection portion is formed is formed to be thinner than the thickness of the portion where the dye-sensitized solar cell element is formed. May be.

  About the electroconductive connection part used for this aspect, it is the same as that of the electroconductive connection part of the 2nd aspect described in the term of "I. Dye-sensitized solar cell element module of 1st aspect" except said point. The explanation here is omitted.

2. Dye-sensitized solar cell element module In this aspect, in the adjacent dye-sensitized solar cell element, the electrode layers connected by the conductive connecting portions are respectively formed on the same resin substrate surface If it is, it will not specifically limit. Among various aspects of the dye-sensitized solar cell element module of the present embodiment, the first electrode layer of each of the adjacent dye-sensitized solar cell elements or the The second electrode layer is formed, and the conductive connection portion includes at least two penetration portions penetrating at least two of the one resin substrate from the outside, and the two or more penetration portions. And connecting the first electrode layers or the second electrode layers of the adjacent dye-sensitized solar cell elements by having an outer conductive portion for conducting between the portions outside the resin substrate. More preferably. This is because the dye-sensitized solar cell module can be easily manufactured.

  Further, the dye-sensitized solar cell element module of the present embodiment is not particularly limited as long as it has the above-described conductive connection portion, and the above-described “I. Dye-sensitized solar cell of the first embodiment”. The conductive connection portion described in the section of “element module” may be formed.

III. Dye-sensitized solar cell element module In the dye-sensitized solar cell element module of the present invention, as described above, the dye-sensitized solar cell module is provided between the pair of resin substrates by having the conductive connection portion. After forming the solar cell element, the conductive connecting portion can be formed through the outside, so that the dye sensitization can be performed by appropriately selecting the shape, forming position, number, etc. of the conductive connecting portion. It becomes possible to make various types of solar cell element modules.

B. Next, a method for producing the dye-sensitized solar cell element module of the present invention will be described.
The method for producing a dye-sensitized solar cell module according to the present invention includes a pair of flexible resin substrates, and at least two or more dye-sensitized solar cell elements formed between the resin substrates, A method for producing a dye-sensitized solar cell module having a first electrode layer formed on the surface of one of the resin substrates, and a dye sensitizer formed on the first electrode layer An oxide semiconductor electrode layer having a porous layer containing metal oxide semiconductor fine particles supported thereon, a second electrode layer formed on the surface of the other resin substrate, and the second electrode layer Forming at least two or more dye-sensitized solar cell elements having a counter electrode layer having a formed catalyst layer, and an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer Dye-sensitized sun From the outside of one of the pair of resin substrates between the pond element forming step and the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer of the adjacent dye-sensitized solar cell element And a conductive connection portion forming step for forming a conductive connection portion provided so as to penetrate the resin substrate.

  In the following description, the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer may be simply referred to as an electrode layer.

  Here, a method for producing the dye-sensitized solar cell module of the present invention will be described with reference to the drawings. FIG. 15 is a process diagram showing the method for producing the dye-sensitized solar cell module of the present invention. As shown in FIG. 15, the method for producing a dye-sensitized solar cell element module of the present invention includes two or more dye-sensitized solar cell elements formed between a pair of a resin substrate 1a and a resin substrate 1b. 10 is a method for producing a dye-sensitized solar cell element module having the first electrode layer 11 formed on the surface of the resin substrate 1a, and the dye-sensitized agent. An oxide semiconductor electrode layer having a porous layer 12 containing metal oxide semiconductor fine particles supported thereon, a second electrode layer 21 formed on the surface of the resin substrate 1b, and the second electrode layer 21 At least two or more dye-sensitized solar cells each having a counter electrode layer having a catalyst layer 22 formed thereon and an electrolyte layer 3 including a redox pair provided between the porous layer 12 and the catalyst layer 22. Dye increase to form element 10 Type solar cell element forming step (FIG. 15A) and the first electrode layer 11 and the second electrode layer 12 of the adjacent dye-sensitized solar cell element 10 from the outside to the inside of the resin substrate 1a. It is a manufacturing method which has the electroconductive connection part formation process (FIG.15 (b)-FIG.15 (c)) which forms the electroconductive connection part 4 provided so that the resin-made board | substrates 1a might be penetrated. FIG. 15B shows a process in which the conductive connection portion 4 penetrates the resin substrate 1a from the outside to the inside of the resin substrate 1a in the conductive connection portion forming step. c) shows that the conductive connection part 4 penetrating the resin substrate 1a has the first electrode layer 11 of one dye-sensitized solar cell element 10 and the second electrode of the other dye-sensitized solar cell element 10. The process of penetrating the layer 12 and further penetrating to the outside of the resin substrate 1b is shown.

According to the present invention, by forming the conductive connection portion forming step, two or more dye-sensitized solar cell elements are formed between a pair of resin substrates, and then the conductive connection portion is provided and adjacent. Since the electrode layers of the matching dye-sensitized solar cell elements can be connected, a high-quality dye-sensitized solar cell module with few connection failures between the electrodes can be easily manufactured. In the conductive connection part forming step, various forms of dye-sensitized solar cell module can be easily manufactured by selecting the formation position, number, shape, etc. of the conductive connection part. it can.
Hereinafter, each process used for the manufacturing method of the dye-sensitized solar cell element module of this invention is demonstrated, respectively.

1. Dye-sensitized solar cell element forming step In the present invention, the dye-sensitized solar cell element forming step includes a pair of resin substrates having flexibility and at least two or more dye sensitizers formed between the resin substrates. In the method for producing a dye-sensitized solar cell element module having a photosensitive solar cell element, the first electrode layer formed on the surface of one of the resin substrates, and formed on the first electrode layer, And an oxide semiconductor electrode layer having a porous layer containing metal oxide semiconductor fine particles carrying a dye sensitizer, a second electrode layer formed on the surface of the other resin substrate, and the first At least two or more dye-sensitized types having a counter electrode layer having a catalyst layer formed on two electrode layers, and an electrolyte layer including a redox pair provided between the porous layer and the catalyst layer Solar cell element Is a step of forming.

About the formation method of the dye-sensitized solar cell element used for this process, it can be made to be the same as that used when forming a general dye-sensitized solar cell element. As a method for forming the dye-sensitized solar cell element, the following forming method can be given as an example.
First, by preparing a pair of resin substrates and forming two or more first electrode layers on the surface of one of the resin substrates, by forming a porous layer on each of the first electrode layers, An oxide semiconductor electrode layer is formed. Further, after forming the same number of second electrode layers as the oxide semiconductor electrode layers on the surface of the other resin substrate, a counter electrode layer is formed by forming a catalyst layer on each of the second electrode layers. To do. Next, a pair of the resin substrates are arranged so that the respective porous layers and the catalyst layer face each other and sealed with a sealing material, and then the liquid or gel electrolyte is placed on the oxide semiconductor electrode. A dye-sensitized solar cell element is formed by forming an electrolyte layer between the substrate and the counter electrode substrate.

Moreover, as a formation method of the said dye-sensitized solar cell element, the formation method illustrated next can also be used.
First, a plurality of oxide semiconductor electrode layers are formed on one resin substrate and a plurality of counter electrode layers are formed on the other resin substrate in the same manner as in the method for forming the dye-sensitized solar cell element described above. . Next, a solid electrolyte layer material is applied on the porous layer of the oxide semiconductor electrode layer and dried to form a solid electrolyte layer, and then the pair of resin substrates are bonded to the solid electrolyte layer and A dye-sensitized solar cell element is formed by disposing the catalyst layers so as to face each other.

In this step, when a solid electrolyte layer is used as the electrolyte layer of the dye-sensitized solar cell element to be formed, two or more dye-sensitized solar cells are used between a pair of resin substrates by using the Roll to Roll method. A battery element may be formed.
When two or more dye-sensitized solar cell elements are formed using the Roll to Roll method, the electrode layers of the adjacent dye-sensitized solar cell elements may be formed apart from each other. In, by forming a conductive connection portion in a conductive connection portion forming step to be described later, it is possible to connect even between separated electrode layers.

  In addition, all the formation methods of the dye-sensitized solar cell element mentioned above are examples, and in this invention, it can be used also about the formation method of another general dye-sensitized solar cell element. is there.

About each member of the said resin-made board | substrates and dye-sensitized solar cell element used in this process, since it can be made to be the same as that of what was demonstrated in the term of "A. dye-sensitized solar cell element module", here The description in is omitted.
The dye-sensitized solar cell element formed in this step has also been described in the section “A. Dye-sensitized solar cell element module”, and thus the description thereof is omitted here.

2. Conductive connection portion forming step This step is performed between the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer of the adjacent dye-sensitized solar cell elements. This is a step of forming a conductive connection portion provided so as to penetrate the resin substrate from one outside to the inside.

  About the electroconductive connection part formed by this process, since it can be the same as that of what was demonstrated in the term of "A. dye-sensitized solar cell element module", description here is abbreviate | omitted.

  In this step, it is preferable to use a metal member as the conductive connection portion. This is because the conductive connection portion can be easily formed between the electrode layers by using the metal member. The metal member can be the same as that described in the section of “A. Dye-sensitized solar cell element module” described above, and thus the description thereof is omitted here.

  The method for forming the conductive connection is not particularly limited as long as the method can form the conductive connection that can connect the electrode layers of adjacent dye-sensitized solar cell elements. For example, it is a method of providing a through hole for arranging the conductive connection portion in advance from the outside of the one resin substrate and providing the conductive connection portion through the through hole. Alternatively, for example, the conductive connecting portion may be provided by directly penetrating the conductive connecting portion from the outside of the one resin substrate. However, the conductive connecting portion may be provided from the outside of the one resin substrate. It is more preferable that the method is provided by directly penetrating. This is because the number of steps for forming the conductive connection portion is small, and the manufacturing efficiency can be improved.

  As a method of directly penetrating the conductive connecting portion from the outside of the one resin substrate, specifically, the needle-like metal member is used for the conductive connecting portion, and the above-mentioned from the outside of the one resin substrate is used. Examples thereof include a method of penetrating a needle-like metal member, a method of penetrating a metal member from the outside of one of the resin substrates using a stapler, and the like.

  In this step, it is possible to form the conductive connection part by selecting the formation position, number, shape, etc. of the conductive connection part in the dye-sensitized solar cell module manufactured according to the present invention. is there. Therefore, for example, in the above-described dye-sensitized solar cell element forming step, even when two or more dye-sensitized solar cell elements are formed in a predetermined arrangement between a pair of resin substrates, the conductive It is possible to obtain a dye-sensitized solar cell module having a different form depending on the formation position, the number, and the shape of the conductive connection portion.

  In this step, in the dye-sensitized solar cell element module manufactured by the manufacturing method of the present invention, the conductive connection portion is formed between the electrode layers of at least one pair of adjacent dye-sensitized solar cell elements. If possible, it is not particularly limited, but in the produced dye-sensitized solar cell element module, it is more preferable to form the conductive connection portion between the electrode layers of all adjacent dye-sensitized solar cell elements. preferable. Thereby, it becomes possible to reduce the connection failure between the said electrode layers, and it becomes possible to manufacture a high quality dye-sensitized solar cell element module.

3. Other Steps The method for producing the dye-sensitized solar cell element module of the present invention is particularly limited as long as it is a production method having the above-described dye-sensitized solar cell element forming step and conductive connecting portion forming step. Instead, necessary steps can be added as appropriate. As such a process, for example, a sealing part forming process for forming a sealing part for sealing the penetration part with a resin material or the like can be cited.

  The present invention is not limited to the above embodiment. The above-described embodiment is an exemplification, and the technical idea described in the claims of the present invention has substantially the same configuration and exhibits the same function and effect regardless of the case. It is included in the technical scope of the invention.

  Hereinafter, the present invention will be described more specifically with reference to examples.

[Example 1]
(Preparation of oxide semiconductor electrode layer)
50% x 50 mm, 50 μm thick Ti foil substrate (Takeuchi Metal Foil Industry Co., Ltd.) (first electrode layer) in ethanol with titanium oxide particles P25 (Nippon Aerosil Co., Ltd.) 0.5% ethylcellulose STD-100 ( A paste mixed with Nisshin Kasei Kogyo Co., Ltd. was applied, dried, and fired at 500 ° C. for 30 minutes to form a porous layer forming layer (film thickness 5 μm). Thereafter, a solution in which 0.3 mM of N719 dye (Dyesol) is dissolved in acetonitrile / t-butanol = 1/1 solvent is prepared, and the Ti foil substrate is immersed in this solution for 20 hours to form a porous layer. Then, an oxide semiconductor electrode layer was manufactured. Thereafter, two oxide semiconductor electrode layers were placed on a plastic substrate having a thickness of 100 μm with an interval of 10 mm.

(Preparation of counter electrode layer)
A catalyst layer is formed by laminating platinum to a total light transmittance of 65% on a 125 μm thick ITO film / PEN substrate (second electrode layer) by sputtering, and cut to 50 mm × 50 mm to form a counter electrode layer. Formed. Thereafter, two counter electrode layers were placed on a transparent plastic substrate having a thickness of 100 μm at an interval of 10 mm.

(Preparation of resin electrolyte solution)
6mol / l hexyl metyl imidazolum iodide (Toyama Pharmaceutical), 0.6mol / l I ₂ (Merck Co., Ltd.), 0.45mol / l n-metyl benzoimidazole (Aldrich) dissolved in hexyl metyl imidazolum tetracyano borate (Merck Co., Ltd.) A liquid was prepared. Next, a resin solution in which 10 wt% of STD-100 (Nisshin Kasei) was dissolved in ethanol was prepared, and a resin electrolyte solution in which the above electrolyte solution: resin solution = 1: 6 (weight ratio) was mixed was prepared.

(Preparation of dye-sensitized solar cell module)
On the porous layer of the oxide semiconductor electrode layer, an electrolyte solution was applied with a solid film thickness of 100 μm and dried in an oven at 100 ° C. for 5 minutes to form a solid electrolyte layer. Then, the solid electrolyte layer on the oxide semiconductor electrode layer and the catalyst layer of the counter electrode layer are made to face each other, the first electrode layer and the second electrode layer are bonded to each other with a shift of 10 mm on the left and right sides, and thermally laminated with a vacuum laminator. A dye-sensitized solar cell element was produced. Thereafter, the first electrode layer and the catalyst layer of the second electrode layer are separated from each other by using a stapler so that the metal member passes through the top and bottom of the pair of plastic substrates. And the second electrode layer were connected. Moreover, regarding the taking-out portions on both sides, a metal member was similarly arranged using a stapler and connected together with a conductive tape installed outside.

[Example 2]
(Preparation of dye-sensitized solar cell module)
In a state where the first electrode layer of the dye-sensitized solar cell element and the catalyst layer of the second electrode layer are in contact with each other, the metal member is disposed so as to penetrate above and below the pair of plastic substrates using a stapler. Thus, a dye-sensitized solar cell element module was produced in the same manner as in Example 1 except that the first electrode layer and the second electrode layer were connected.

[Evaluation]
As a performance evaluation of the dye-sensitized solar cell module obtained in Example 1 and Example 2, photoelectric conversion efficiency was measured. The measurement device was a spectrometer CEP-2000, and the measurement was performed under the conditions of AM1.5. The results are shown in Table 1. In Table 1, Jsc (mA / cm ² ) represents a short circuit current density, Voc (V) represents an open circuit voltage, FF represents a fill factor, and η (%) represents photoelectric conversion efficiency.

  By forming the conductive connection portion, a dye-sensitized solar cell module with high photoelectric conversion efficiency could be easily produced.

DESCRIPTION OF SYMBOLS 1a, 1b ... Resin board | substrate 11 ... 1st electrode layer 12 ... Porous layer 21 ... 2nd electrode layer 22 ... Catalyst layer 3 ... Electrolyte layer 4 ... Conductive connection part 4a ... Through-through part 4b ... Outer conductive part 10 ... Dye Sensitization type solar cell element 100 ... Dye-sensitized type solar cell element module

Claims (7)

A pair of resin substrates having flexibility;
A dye-sensitized solar cell element module having at least two or more dye-sensitized solar cell elements formed between the resin substrates,
The dye-sensitized solar cell element includes a first electrode layer formed on the surface of one of the resin substrates, and a metal oxide formed on the first electrode layer and carrying a dye sensitizer. An oxide semiconductor electrode layer having a porous layer containing fine semiconductor particles;
A second electrode layer formed on the surface of the other resin substrate, and a counter electrode layer having a catalyst layer formed on the second electrode layer;
An electrolyte layer including a redox pair provided between the porous layer and the catalyst layer,
Between the first electrode layer, the first electrode layer and the second electrode layer, or the second electrode layer of the adjacent dye-sensitized solar cell elements, conductive connection portions for connecting these electrode layers are formed. And
The dye-sensitized solar cell module, wherein the conductive connection portion is formed so as to penetrate at least one of the one resin substrates from the outside.   The first electrode layer of one of the adjacent dye-sensitized solar cell elements among the adjacent dye-sensitized solar cell elements is formed on the surface of the one resin substrate, and the other resin The second electrode layer of the other dye-sensitized solar cell element is formed on the surface of the substrate, and the conductive connection portion is the one dye formed on the one resin substrate. In order to connect the first electrode layer of the sensitized solar cell element and the second electrode layer of the other dye-sensitized solar cell element formed on the other resin substrate, at least the one The dye-sensitized solar cell element module according to claim 1, wherein the dye-sensitized solar cell element module is formed so as to penetrate any one of the resin substrates from outside.   3. The dye-sensitized solar cell element according to claim 2, wherein the conductive connection portion is formed so as to penetrate at least two of the one resin substrates from the outside. module.   The first electrode layer or the second electrode layer of each of the adjacent dye-sensitized solar cell elements is formed on the surface of the one resin substrate, and the conductive connection portion is Two or more penetrating portions penetrating at least two of the one resin substrate from the outside, and an outer conductive portion for conducting between the two or more penetrating portions outside the resin substrate. 2. The dye-sensitized solar cell element according to claim 1, wherein the dye-sensitized solar cell element connects the first electrode layer or the second electrode layer of the adjacent dye-sensitized solar cell elements. module.   The said electrically conductive connection part is formed so that it may penetrate from the outer side of said one resin board | substrate to the outer side of said other resin board | substrate, The claim in any one of Claim 1 to 4 characterized by the above-mentioned. The dye-sensitized solar cell element module according to Item.   The dye-sensitized solar cell module according to any one of claims 1 to 5, wherein the conductive connection portion is made of a metal member. A pair of resin substrates having flexibility;
A method for producing a dye-sensitized solar cell module having at least two or more dye-sensitized solar cell elements formed between the resin substrates,
A first electrode layer formed on the surface of one of the resin substrates, and a porous layer containing metal oxide semiconductor fine particles formed on the first electrode layer and carrying a dye sensitizer. An oxide semiconductor electrode layer having,
A second electrode layer formed on the surface of the other resin substrate, and a counter electrode layer having a catalyst layer formed on the second electrode layer;
An electrolyte layer including a redox pair provided between the porous layer and the catalyst layer;
A dye-sensitized solar cell element forming step of forming at least two or more dye-sensitized solar cell elements having:
Between the first electrode layer, the first electrode layer and the second electrode layer, or between the second electrode layers of the adjacent dye-sensitized solar cell elements, the resin substrate from one outer side of the pair of resin substrates A conductive connecting portion forming step of forming a conductive connecting portion provided so as to pass through,
The manufacturing method of the dye-sensitized solar cell element module characterized by having.

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