JP2012134241A - Decoration object and decoration method of see-through type solar cell module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a decoration object and decoration method of a see-through type solar cell module which provide high designability such as colors and pictures without deteriorating lighting performance in the see-through type solar cell module.SOLUTION: An adhesive layer is formed on an entire rear surface of a see-through type solar cell module having a photoelectric conversion function. Adhesive parts on photoelectric conversion elements and non adhesive parts on openings between the photoelectric conversion elements are formed on the adhesive layer. Decorations are provided by selectively bonding a foil like or powdery color materials only to the adhesive parts on the photoelectric conversion elements.

Description

  The present invention relates to a see-through solar cell module having a photoelectric conversion function, and more particularly to a decoration and a decoration method for a see-through solar cell module having both functions of power generation and daylighting.

  In recent years, the spread of solar power generation systems that convert solar energy into electric energy has been rapidly expanding due to increased awareness of the environment and lower system prices. The main forms of solar cell modules (photoelectric conversion devices) for photovoltaic power generation systems that are currently in widespread use are roughly divided into the following two types.

  One is a crystalline solar cell module configured by connecting a plurality of bulk crystal solar cells, such as single crystal silicon or polycrystalline silicon, and the other is amorphous silicon or microcrystalline silicon. It is a form of a thin film solar cell module in which a photoelectric conversion layer is formed as a thin film on a substrate, as typified by crystalline silicon.

  The former crystalline solar module is usually modularized by arranging crystalline solar cells without gaps and sealing them with glass in order to increase the amount of power generation per unit area. By arranging it, a see-through solar cell module having optical transparency can be obtained.

  As a typical structure of the latter thin film solar cell module, there are two types, a substrate type and a superstrate type. In general, in a solar cell module, a substrate, a photoelectric conversion layer, a transparent electrode, a back electrode layer, and a grid electrode are laminated.

  The substrate type uses a light-transmitting substrate as the substrate, or by forming an opening that transmits light in the light-impermeable substrate, so that the light is transmitted to the back side of the thin-film solar power module, A see-through solar cell module can be obtained.

  In addition, the super straight type increases the light transmittance of the photoelectric conversion layer and the back electrode layer, so that a part of the light incident on the thin film solar cell module is transmitted through the back electrode layer to the back side of the thin film solar cell module. The see-through solar cell module can be made to penetrate.

Such see-through crystal solar cell modules and see-through thin film solar cell modules have both functions of power generation and daylighting.
The see-through thin film solar cell module is useful in applications that require harmony of design, such as building windows and automobile ceilings. In particular, in recent years, there has been an increase in architectural designs in which some or all of the outer walls of office buildings and sunroofs are covered with glass. In such architectural designs, see-through thin-film solar cell modules can be attached to glass windows or used as building materials in place of glass, so that spaces in buildings and automobiles can be used for power generation. At the same time, a comfortable living environment can be created as a window with moderate light shielding properties.

2. Description of the Related Art In recent years, research has been carried out to impart design to solar cell modules by intentionally coloring the appearance on the light incident surface side and decorating the solar cell modules.
In the configuration of forming a light-transmitting protective film formed to prevent intrusion of moisture etc. on the outermost surface of the element such as the substrate of the solar cell module and the photoelectric conversion layer, the transparent electrode, the back electrode layer, the grid electrode, There has been reported a method of decorating a solar cell module by adding a pigment or a pigment to the translucency (see, for example, Patent Document 1).

  When a see-through solar cell module is installed in a building or automobile, the surface with the photoelectric conversion function of the see-through solar cell module faces outside, and the back of the see-through solar cell module without the photoelectric conversion function faces indoors Will be installed.

  As described above, when the see-through solar cell module is installed and viewed from the inside or the inside of the vehicle, the photoelectric conversion layer and the electrode pattern in the laminated structure are visually recognized. In addition, interference colors caused by differences in the laminated structure and film thickness of thin films such as transparent electrode films are visually recognized, and the design properties are low as they are, resulting in a mismatch between the solar cell module and the living space.

  When decorating the back of a see-through solar cell module, the photoelectric conversion element or transparent electrode is hidden to provide design and external light that is transmitted by not decorating the opening of the photoelectric conversion element However, it is difficult to accurately apply decorations such as patterns, avoiding the opening of the see-through solar cell module. There is a problem that it is difficult to achieve both.

Japanese Patent Laid-Open No. 2-94575

  In the see-through solar cell module, the present invention provides a decoration that combines design and lighting on the back surface of the see-through solar cell module that does not have a photoelectric conversion function. An object of the present invention is to provide a decoration for a see-through solar cell module and a decoration method capable of imparting high design properties such as color and pattern.

  The ornament of the see-through solar cell module according to claim 1 of the present invention is the adhesive layer formed on the entire back surface of the see-through solar cell module having a photoelectric conversion function. A non-adhesive part on the opening between the elements is formed, and decoration is performed by selectively attaching a foil-like or powdery color material only to the adhesive part on the photoelectric conversion element. And

  The see-through solar cell module decoration according to claim 2 of the present invention is the material according to claim 1, wherein the adhesive layer has photosensitivity, and the adhesiveness is reduced by irradiating light of a predetermined wavelength. It is characterized by becoming.

The ornament of the see-through solar cell module according to claim 3 of the present invention is characterized in that, in claim 1 or 2, the sheet resistance value of the adhesive layer is 10 ¹⁰ Ω / □ or more.

  The ornament of the see-through solar cell module according to claim 4 of the present invention is any one of claims 1 to 3, wherein the foil-like colorant is made of an organic resin thin film or an inorganic thin film in which a pigment is dispersed. The transfer foil is formed on a release paper having a release layer.

  The ornament of the see-through solar cell module according to claim 5 of the present invention is any one of claims 1 to 4, wherein the pigment of the powdery or foil-like colorant is an organic pigment, an inorganic pigment or a metal It consists of fillers.

  The method for decorating a see-through solar cell module according to claim 6 of the present invention includes a step of forming an adhesive layer made of a photosensitive adhesive material on the back surface of a see-through solar cell module having a photoelectric conversion function, and the see-through method. The adhesive part on the photoelectric conversion element and the opening by reducing the adhesiveness of the adhesive layer that is exposed from the surface of the solar cell module and located in the opening between the photoelectric conversion elements where the photoelectric conversion element is not formed The step of forming the upper non-adhesive part, the step of laminating the release paper having the transfer foil formed on the adhesive layer, the release paper and the transfer foil are peeled off, and only the adhesive part is made of the transfer foil. Forming a pattern.

  The method for decorating a see-through solar cell module according to claim 7 of the present invention includes a step of forming an adhesive layer made of an adhesive material having photosensitivity on the back surface of a see-through solar cell module having a photoelectric conversion function; A step of laminating a release paper on which a transfer foil is formed on a layer, and an adhesive layer that is exposed from the surface of the see-through solar cell module and is located at an opening between photoelectric conversion elements in which no photoelectric conversion elements are formed The step of forming the adhesive part on the photoelectric conversion element and the non-adhesive part on the opening by reducing the adhesiveness, the release paper and the transfer foil are peeled off, and only the adhesive part is made of the transfer foil. Forming a pattern.

  The method for decorating a see-through solar cell module according to claim 8 of the present invention includes a step of forming an adhesive layer made of an adhesive material having photosensitivity on a release paper on which a transfer foil is formed, and a see-through type having a photoelectric conversion function. A step of laminating a release paper in which the adhesive layer and transfer foil are laminated on the back surface of the solar cell module, and an opening between the photoelectric conversion elements that are exposed from the surface of the see-through solar cell module and no photoelectric conversion elements are formed The adhesive layer and the non-adhesive part are formed on the adhesive layer by reducing the adhesiveness of the adhesive layer located in the part, and the release paper and the transfer foil are peeled off from the transfer foil only to the adhesive part. Forming a pattern.

  A method for decorating a see-through solar cell module according to claim 9 of the present invention includes a step of forming an adhesive layer made of an adhesive material having photosensitivity on the back surface of a see-through solar cell module having a photoelectric conversion function; The adhesive part on the photoelectric conversion element and the opening by reducing the adhesiveness of the adhesive layer that is exposed from the surface of the solar cell module and located in the opening between the photoelectric conversion elements where the photoelectric conversion element is not formed The step of forming the non-adhesive part above, and after spraying the powdery color material over the entire surface of the adhesive layer, the excess powdery color material is removed, and the powdery color material is applied only to the adhesive part. Forming a pattern made of a color material.

According to the ornament of the see-through solar cell module according to claim 1 of the present invention, the photoelectric conversion element is exposed on the back surface of the see-through solar cell module.
The photoelectric conversion element is formed by depositing a metal film such as silver or a metal oxide film such as a transparent conductive film by vacuum film formation.
By forming an adhesive layer on the entire back surface, leaving adhesiveness on the photoelectric conversion element, forming an adhesive part, and eliminating the adhesiveness of the opening where the photoelectric conversion element is not formed to form a non-adhesive part Alternatively, a foil-like or powder-like color material can be selectively fixed on the photoelectric conversion element.
Since the opening is a non-adhesive part, the decorative material on the back of the see-through solar electric module can be removed while maintaining the opening of the see-through solar cell module. Obtainable.
In order to improve fixing of the color material layer on the adhesive layer, the adhesive material can be cured by additional exposure treatment or heat treatment. It is also possible to form a transparent resin layer on the color material of the present invention and cover the entire decorative surface.

According to the ornament of the see-through solar cell module according to claim 2 of the present invention, the adhesive part and the non-adhesive part are formed by using a photosensitive material that loses adhesiveness by a photoreaction as the adhesive material. I can.
The wavelength to be used is not particularly defined, and a line having a wavelength such as an ultraviolet ray region or a visible light region can be used in accordance with the bright line contributing to the reaction of the adhesive material.
As the adhesive material, acrylic resin, silicon resin, urethane resin, epoxy resin, thiol resin and the like can be used.
By making the transmittance of the photoelectric conversion element in the emission line of the adhesive material 10% or less, by exposing from the glass surface of the see-through solar cell module, only the adhesive layer in the opening is selectively used with the photoelectric conversion element as a light shielding mask. Can be exposed to light to form a non-adhesive portion.
Moreover, it is also possible to improve the adhesiveness by heat reaction and the strength of the adhesive layer as a film by providing the adhesive material with both photosensitive and thermosetting reactive groups.

According to the ornament of the see-through solar cell module according to claim 3 of the present invention, the back surface of the see-through solar cell module has the pattern of the photoelectric conversion element exposed, and the pattern is formed to form the adhesive layer on the front surface. Insulation between them is necessary. In order to ensure electrical insulation, the sheet resistance is desirably 10 ¹⁰ Ω / □ or more. If it is less than 10 ¹⁰ Ω / □, an unnecessary portion is energized by an applied voltage, which causes a decrease in power generation efficiency of the see-through solar cell module.
In addition, since the metal film layer such as silver of the photoelectric conversion element is easily changed by oxygen or moisture in the air, the change can be prevented by covering with a highly electrically insulating film.
Moreover, what is necessary is just to form the film thickness of the adhesion layer with the film thickness which can coat | cover the unevenness | corrugation of the pattern of a photoelectric conversion element completely.

According to the ornament of the see-through solar cell module according to claim 4 of the present invention, as the transfer foil, a thin film obtained by coating and drying an organic resin in which a pigment is dispersed, or an inorganic thin film such as a metal or metal oxide is used. Is possible.
As the organic resin thin film, a single color thin film by a slit coater, a micro gravure or the like, or a multicolor pattern by a printing method such as offset printing, gravure printing or screen printing can be used.
A transfer foil formed by stacking an inorganic thin film and an organic resin thin film can also be used. The transfer foil is formed on a release paper having releasability. Only the transfer foil is transferred from the release paper to the adhesive portion on the photoelectric conversion element, and the transfer foil remains on the release paper for the non-adhesive portion. The conversion element can be selectively decorated.
As the release layer, a release agent represented by silicon oil, silicon varnish, or a thin film layer of silicon rubber may be used. Further, for the same purpose, fluorine-based resin and fluorine-based rubber can be used, or the fluororesin fine powder may be mixed with silicon rubber or ordinary rubber to obtain peelability. As the release paper, PET film, acrylic film or the like can be used, and is not particularly defined.

According to the ornament of the see-through type solar cell module according to claim 5 of the present invention, the pigment dispersed in the organic resin and the powdery pigment include disazo, monoazo, phthalocyanine, carbon black and benz Organic resin pigments such as imidazolone, quinophthalone, and quinocridone, metal complexes, and inorganic pigments such as TiO2 particles, mica pigments, and pearl pigments can be used, but they are highly light-resistant because they are used under sunlight. It is desirable to use
As for the size of the pigment particles, the width of the opening of the see-through solar cell module is about several hundred μm, so that the transfer foil can be cut at the interface between the adhesive part and the non-adhesive part. It is desirable that the average particle size is 5 μm or less in order to maintain the aperture ratio of the part.

According to the method for decorating a see-through solar cell module according to claim 6 of the present invention, a photosensitive adhesive is directly coated on the photoelectric conversion element of the see-through solar cell module, and power generation on the back surface of the photoelectric conversion element is performed. After exposing from the surface, the transfer foil is bonded through a release paper, and the transfer foil is fixed only to the adhesive portion on the photoelectric conversion element, thereby obtaining a decoration on the back surface of the see-through solar cell module of the present invention. be able to.
As a method for applying the adhesive material, a screen printing method, a flexographic printing method, or a coating method using a slit coater can be used.
If the adhesive material is a photosensitive material that is impeded by the photoreaction caused by oxygen, after applying the adhesive material, laminate the release paper with releasability and expose from the back side, or expose from the back side in a nitrogen atmosphere. By doing so, the influence of oxygen can be avoided.
It is also possible to bond an adhesive layer on the photoelectric conversion element of the see-through solar cell module after applying an adhesive material on a release paper having releasability. Since the adhesive material and the transfer foil can be supplied by a roll film, the manufacturing apparatus can be constructed only by the dry process, and the apparatus structure can be simplified.

According to the method for decorating a see-through solar cell module according to claim 7 of the present invention, a release paper in which a photosensitive adhesive material is directly coated on a photoelectric conversion element of a see-through solar cell module to form a transfer foil. The see-through solar cell of the present invention is exposed to the power generation surface on the back surface of the photoelectric conversion element, and then peeled off the release paper and the transfer foil to fix the transfer foil only to the adhesive portion on the photoelectric conversion element. A decoration on the back of the module can be obtained.
As a method for applying the adhesive material, a screen printing method, a flexographic printing method, or a coating method using a slit coater can be used.
Since the transfer foil is pasted after the adhesive material is applied, it is possible to prevent dust and the like from adhering to the surface of the adhesive layer, and to avoid a transfer foil defect. Further, in the case where the adhesive material is a photosensitive material that is subjected to oxygen inhibition, it is possible to avoid inhibition of photoreaction due to oxygen during exposure by adhering the transfer foil and release paper to the adhesive layer.
It is also possible to bond an adhesive layer on the photoelectric conversion element of the see-through solar cell module after applying an adhesive material on a release paper having releasability. Since the adhesive material and the transfer foil can be supplied by a roll film, the manufacturing apparatus can be constructed only by the dry process, and the apparatus structure can be simplified.

According to the method for decorating a see-through solar cell module according to claim 8 of the present invention, an adhesive material is coated on a release paper on which a transfer foil is formed, and then the transfer foil and the adhesive layer are connected to the see-through solar cell module. Pasted on the photoelectric conversion element, exposed from the power generation surface on the back side of the photoelectric conversion element, then peeled off the release paper and the transfer foil, fixing the transfer foil only to the adhesive portion on the photoelectric conversion element, A decoration on the back surface of the see-through solar cell module can be obtained.
As a method for coating the adhesive material on the transfer foil, a screen printing method, a flexographic printing method, a slit coater, a micro gravure, or the like can be used.
Since the adhesive material and transfer foil are bonded to the see-through solar cell module at the same time, if the adhesive material is a photosensitive material that is oxygen-inhibited, the transfer foil and release paper are bonded to the adhesive layer, so Inhibition of the reaction can be avoided. Moreover, since an adhesive material and transfer foil can be supplied with a roll film, a manufacturing apparatus can be constructed only by a dry process, and the apparatus structure can be simplified.

According to the method for decorating a see-through solar cell module according to claim 9 of the present invention, a photosensitive adhesive is directly coated on the photoelectric conversion element of the see-through solar cell module, and power generation on the back surface of the photoelectric conversion element is performed. After the surface is exposed, the powdery color material is dispersed, the color material is fixed only to the adhesive portion on the photoelectric conversion element, and the excess color material is removed to remove the back surface of the see-through solar cell module of the present invention. You can get a decoration to.
As a method for applying the adhesive material, a screen printing method, a flexographic printing method, or a coating method using a slit coater can be used.
If the adhesive material is a photosensitive material that is impeded by the photoreaction caused by oxygen, after applying the adhesive material, laminate the release paper with releasability and expose from the back side, or expose from the back side in a nitrogen atmosphere. By doing so, the influence of oxygen can be avoided.
It is also possible to improve the fixing of the coloring material by spraying the powdery coloring material and then applying heat or pressure.

  Therefore, according to the present invention, in a see-through solar cell module, a decorative product and a decorating method for a see-through solar cell module that can impart high designability such as color and pattern without reducing the daylighting performance. Can provide.

BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic diagram explaining the cross-sectional shape of the decoration of the see-through type solar cell module which concerns on embodiment of this invention, (a) A figure of the cross-sectional shape explaining the positional relationship of a see-through type solar cell module and a decoration pattern The schematic diagram and (b) are the schematic diagrams of the planar shape explaining the relationship between the photoelectric conversion element and opening part of a see-through type solar cell module. The schematic diagram explaining the state which is exposed from the surface side of a see-through type solar cell module with respect to the adhesion layer of the see-through type solar cell module which concerns on embodiment of this invention. The schematic diagram of the cross-sectional shape explaining the decorating method which concerns on the Example of this invention. The schematic diagram of the cross-sectional shape explaining the decorating method which concerns on the comparative example of this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 schematically shows a cross-sectional shape of a decoration of a see-through solar cell module according to the present embodiment.

In the see-through solar cell module 10 according to the present embodiment, a plurality of photoelectric conversion elements 12 are formed on a glass substrate 11 at a predetermined interval, and external light 9 applied to the surface 16 side of the glass substrate 11 is used. It generates electricity through photoelectric conversion.
A light-transmitting opening 17 is provided between adjacent photoelectric conversion elements 12, and external light 9 is transmitted through the opening 17 so that the external light 9 can be used as indoor illumination light. .

  An adhesive layer 13 made of an adhesive material having photosensitivity is formed on the entire back surface 15 of the see-through solar cell module 10.

  The back surface 15 of the see-through solar cell module 10 is disposed indoors, and the outermost surface of the photoelectric conversion element 12 on the back surface 15 side of the see-through solar cell module 10 has no power generation effect. The coloring material 14 is pasted together, and the interior is decorated.

  The photosensitive adhesive material for forming the adhesive layer 13 has a reaction emission line in the ultraviolet region, and acrylic resin, silicon resin, urethane resin, epoxy resin, thiol resin, etc. can be used. .

The thickness of the adhesive layer 13 is preferably ½ or less, preferably 50 μmt or less of the opening 17 of the photoelectric conversion element 12 in consideration of photoreaction transmission.
As a method for applying the adhesive material, a method of directly applying to the see-through type solar cell module 10 or a method of applying to the see-through type solar cell module 10 after coating on the release paper is possible.

  In order to secure an electrically conducting portion as the see-through solar cell module 10 or to selectively decorate an area that requires decoration, a screen plate having a predetermined pattern is used, and the adhesive material is used. Screen printing is desirable.

As the coloring material, a transfer foil or a divided material can be used. However, in order to simplify the manufacturing apparatus and clean the manufacturing environment, it is preferable to use the transfer foil.
Factors affecting the transfer foil, such as the adhesive force between the transfer foil and the release paper, and the cohesive force as a lateral film of the transfer foil.

The adhesion between the transfer foil and the adhesive material is preferably higher than the adhesion between the transfer foil and the release paper.
It is desirable that the cohesive force is low as the film in the lateral direction of the transfer foil. In order to reduce the cohesive force, the film thickness of the transfer foil is desirably 5 μmt or less.

  As shown in FIG. 2, the photoelectric conversion element 12 is used as an exposure mask by using the light shielding property of the photoelectric conversion element 12 and the transmittance of the opening 17, and the adhesive layer 13 is exposed with the exposure light beam 18 from the back surface. Thus, the adhesiveness of the adhesive layer 13 located in the opening 17 between the photoelectric conversion elements 12 in which the photoelectric conversion element 12 is not formed is reduced, and the adhesive part 13A on the photoelectric conversion element 12 and the non-adhesion on the opening 17 are reduced. An adhesive portion 13B is formed.

  Accordingly, the adhesive portion 13A can be selectively formed only on the photoelectric conversion element 12 regardless of the processing position accuracy of the opening 17 between the photoelectric conversion elements 12 for each substrate, and the coloring material is formed thereon. By bonding 14, the see-through solar cell module 10 with a decorative design having a high design such as a color and a pattern can be obtained without reducing the daylighting property.

Hereinafter, an embodiment will be described with reference to FIG.
As the see-through solar cell module 10, the spectral transmittance of the photoelectric conversion element 12 is 0%, the spectral transmittance of the opening 17 is 90%, the pattern width of the photoelectric conversion element 12 is 1000 μm, and the opening between the photoelectric conversion elements 12 17 having a width of 90 μm and a glass substrate 11 made of soda glass was used.

As the adhesive material, a material having a sheet resistance of 10 ¹⁴ Ω / □ made of a radical polymerization type photosensitive resin made of an acrylic resin was used.
As the color material, a transfer foil formed by coating and drying an ink in which carbon black was dispersed in an organic resin on a silicon-based release paper with a film thickness of 1 μm was used.

In order to selectively decorate black ink on the surface of the photoelectric conversion element 12 having no photoelectric conversion function on the back surface 15 side of the see-through solar cell module 10,
(1) As shown in FIG. 3A, the adhesive layer 13 was formed by coating the adhesive material on the back surface 15 of the see-through solar cell module 10 with a film thickness of 10 μm by screen printing and drying.

  (2) Next, as shown in FIG. 3 (b), the transfer foil 23 was laminated on the adhesive layer 13 through a release paper 22 having a release layer 21.

  (3) Next, as shown in FIG. 3 (c), a predetermined exposure dose is irradiated from the surface 16 side of the see-through solar cell module 10 by the exposure light beam 18, and the openings between the photoelectric conversion elements 12 of the adhesive layer 13. By reducing the adhesiveness of the part 17, the adhesive part 13 </ b> A on the photoelectric conversion element 12 and the non-adhesive part 13 </ b> B on the opening part 17 were formed.

  (4) Next, as shown in FIG. 3D, the release paper 22 and the transfer foil 23 were peeled off, and the pattern 14 made of the transfer foil 23 was fixed only to the adhesive portion 13A on the photoelectric conversion element 12. .

  The step (2) and the step (3) may be interchanged. That is, the step (3) may be performed first, and then the step (2) may be performed.

  By the above-described decoration method of the present invention, the color material 14 is selectively bonded only on the photoelectric conversion element 12 regardless of the processing position accuracy for each substrate 11 of the opening 17 between the photoelectric conversion elements 12. It was possible to obtain a see-through solar cell module 10 having a high electrical insulation and a decoration made of a black ink design without reducing the daylighting property.

Comparative example

Hereinafter, a comparative example will be described with reference to FIG.
As the see-through solar cell module 10, the spectral transmittance of the photoelectric conversion element 12 is 0%, the spectral transmittance of the opening 17 is 90%, the pattern width of the photoelectric conversion element 12 is 1000 μm, and the opening between the photoelectric conversion elements 12 17 having a width of 90 μm and a glass substrate 11 made of soda glass was used.

As the adhesive material, a material having a sheet resistance of 10 ¹⁴ Ω / □ made of a radical polymerization type photosensitive resin made of an acrylic resin was used.
As the color material, a transfer foil formed by coating and drying an ink in which carbon black was dispersed in an organic resin on a silicon-based release paper with a film thickness of 1 μm was used.
A Cr mask in which a pattern was formed in the shape of the photoelectric conversion element 12 was used as an exposure mask.

In order to selectively decorate black ink on the surface of the photoelectric conversion element 12 having no photoelectric conversion function on the back surface 15 side of the see-through solar cell module 10,
(1) As shown in FIG. 4A, the adhesive layer 13 was formed by coating the adhesive material on the back surface 15 of the see-through solar cell module 10 with a film thickness of 10 μm by screen printing and drying.

  (2) Next, as shown in FIG. 4B, an exposure mask 32 in which a pattern 31 is formed in the shape of the photoelectric conversion element 12 is positioned at the alignment mark on the back surface 15 side of the see-through solar cell module 10. Combined.

  (3) Next, as shown in FIG. 4 (b), a predetermined exposure amount is irradiated from the back surface 16 side of the see-through solar cell module 10 through the exposure mask 32 with the exposure light beam 18. By reducing the adhesiveness of the opening 17 between the photoelectric conversion elements 12, the adhesive part 13 </ b> A on the photoelectric conversion element 12 and the non-adhesive part 13 </ b> B on the opening 17 were formed.

  (4) Next, as shown in FIG. 4C, the transfer foil 23 was laminated on the adhesive layer 13 through a release paper 22 having a release layer 21.

  (5) Next, as shown in FIG. 4D, the release paper 22 and the transfer foil 23 were peeled off, and the pattern 14 made of the transfer foil 23 was fixed only to the adhesive portion 13A on the photoelectric conversion element 12. .

  In the comparative example described above, the reproducibility of the processing accuracy when forming the opening 17 of the see-through solar cell module 10 is low, and does not coincide with the positional accuracy of the exposure mask 32 that provides stable processing accuracy. As shown to (d), the part which the pattern 14 of the transfer foil 23 covers a part of opening part 17 of the see-through type solar cell module 10 will generate | occur | produce, and the lighting property will fall.

  In addition to the see-through solar cell module of the present invention, the decorative object of the present invention and the method of decorating the same are applied to decorating with different patterns on the front and back of a display that is visible on the front and back surfaces such as a storefront POP and a glass window. it can.

  DESCRIPTION OF SYMBOLS 10 ... See-through type solar cell module, 11 ... Glass substrate, 12 ... Photoelectric conversion element, 13 ... Adhesive layer, 14 ... Color material pattern, 15 ... Back surface of see-through type solar cell module, 16 ... Surface of see-through type solar cell module, DESCRIPTION OF SYMBOLS 17 ... Opening part, 18 ... Exposure light beam, 21 ... Release layer, 22 ... Release paper, 23 ... Transfer foil, 32 ... Mask for exposure.

Claims (9)

  The adhesive layer formed on the entire back surface of the see-through solar cell module having a photoelectric conversion function is formed with an adhesive part on the photoelectric conversion element and a non-adhesion part on the opening between the photoelectric conversion elements, and the photoelectric conversion element A see-through solar cell module decoration, which is decorated by selectively sticking a foil-like or powder-like coloring material only to the upper adhesive portion.   2. The see-through solar cell module decoration according to claim 1, wherein the adhesive layer is made of a material that has photosensitivity and that decreases in adhesiveness when irradiated with light having a predetermined wavelength. The decoration of the see-through solar cell module according to claim 1, wherein the adhesive layer has a sheet resistance value of 10 ¹⁰ Ω / □ or more.   The foil-like color material is a transfer foil made of an organic resin thin film or an inorganic thin film in which a pigment is dispersed, and the transfer foil is formed on a release paper having a release layer. The ornament of the see-through solar cell module according to any one of claims 1 to 3.   The see-through solar cell module decoration according to any one of claims 1 to 4, wherein the pigment of the powdery or foil-like coloring material comprises an organic pigment, an inorganic pigment, or a metal filler. Forming an adhesive layer made of an adhesive material having photosensitivity on the back surface of a see-through solar cell module having a photoelectric conversion function;
Laminating a release paper having a transfer foil formed on the adhesive layer;
By exposing from the surface of the see-through solar cell module and reducing the adhesiveness of the adhesive layer located in the opening between the photoelectric conversion elements where the photoelectric conversion elements are not formed, the adhesive part on the photoelectric conversion element and the above Forming a non-adhesive portion on the opening;
Peeling the release paper and transfer foil and forming a pattern made of the transfer foil only on the adhesive part;
A decoration method for a see-through solar cell module, comprising: Forming an adhesive layer made of an adhesive material having photosensitivity on the back surface of a see-through solar cell module having a photoelectric conversion function;
By exposing from the surface of the see-through solar cell module and reducing the adhesiveness of the adhesive layer located in the opening between the photoelectric conversion elements where the photoelectric conversion elements are not formed, the adhesive part on the photoelectric conversion element and the above Forming a non-adhesive portion on the opening;
Laminating a release paper having a transfer foil formed on the adhesive layer;
Peeling the release paper and transfer foil and forming a pattern made of the transfer foil only on the adhesive part;
A decoration method for a see-through solar cell module, comprising: Forming an adhesive layer made of an adhesive material having photosensitivity on the release paper on which the transfer foil is formed;
Laminating a release paper in which the adhesive layer and the transfer foil are laminated on the back surface of a see-through solar cell module having a photoelectric conversion function;
By exposing from the surface of the see-through solar cell module and lowering the adhesiveness of the adhesive layer located in the opening between the photoelectric conversion elements where the photoelectric conversion elements are not formed, the adhesive layer and the non-adhesive in the adhesive layer Forming a part;
Peeling the release paper and transfer foil and forming a pattern made of the transfer foil only on the adhesive part;
A decoration method for a see-through solar cell module, comprising: Forming an adhesive layer made of an adhesive material having photosensitivity on the back surface of a see-through solar cell module having a photoelectric conversion function;
By exposing from the surface of the see-through solar cell module and reducing the adhesiveness of the adhesive layer located in the opening between the photoelectric conversion elements where the photoelectric conversion elements are not formed, the adhesive part on the photoelectric conversion element and the above Forming a non-adhesive portion on the opening;
After spraying powdery color material over the entire surface of the adhesive layer, removing excess powdery color material, forming a pattern made of the powdery color material only on the adhesive part; and
A decoration method for a see-through solar cell module, comprising:

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