KR101096139B1 - dye-sensitized solar cell and method for manufacturing thereof - Google Patents

Abstract

The present invention relates to a dye-sensitized solar cell and a method of manufacturing the same.
Is formed in the present invention the front transparent substrate onto a small area than the front transparent substrate in accordance with the sensitive dyes formed on the TiO ₂ optical electrode layer is light sensitive dye adsorption and, TiO ₂ optical electrode and including a porous metal electrode layer to the electrolyte passes through In the solar cell, the porous metal electrode layer is further formed at the edge portion of the front side surface formed by the edge portion on the front transparent substrate and the TiO ₂ photoelectrode layer and the front transparent substrate, and the edge portion of the TiO ₂ photoelectrode layer is formed on the front transparent substrate. It is characterized in that formed on the porous metal electrode layer formed on the edge portion.
The dye-sensitized solar cell and the method of manufacturing the same according to the present invention can reduce the manufacturing cost and simplify the manufacturing process, facilitate the adsorption of the photosensitive dye to the TiO ₂ photoelectrode layer and the passage of the electrolyte, and drive the normal dye-sensitized solar cell. There is a possible effect, there is an effect that can improve the electrical energy generation efficiency of the dye-sensitized solar cell.

Description

Dye-sensitized solar cell and method for manufacturing

The present invention relates to a dye-sensitized solar cell and a method of manufacturing the same.

Fossil fuels have been used as the main energy source for humanity to date with abundant reserves and low prices. However, the reserve is showing a limit, and carbon dioxide and sulfur dioxide emitted during the combustion of fossil fuels are the main causes of environmental pollution. In order to overcome these problems, development of eco-friendly renewable energy sources is becoming important, and solar cells using solar energy are becoming more and more important.

In recent years, dye-sensitized solar cells (dye-sensitized solar cells) of the many types of solar cells have been attracting worldwide attention because of their low manufacturing cost, simple manufacturing process, and various application possibilities. Conventional dye-sensitized solar cells include a pair of transparent substrates, a transparent conducting oxide (TCO) formed on each of the transparent substrates, a TiO ₂ photoelectrode layer, a photosensitive dye, an electrolyte, and a metal thin film catalyst electrode layer. It consists of.

The transparent conductive substrate easily passes sunlight, and FTO (F: SnO ₂ ), indium tin oxide (ITO), and the like are used as a transparent conductive layer for transferring electric energy generated therein to an external circuit. However, there is a problem that the price portion of the transparent conductive layer accounts for about 45% of the total material cost, so it is urgent to develop alternative structures and materials.

Accordingly, a dye-sensitized solar cell without a transparent conductive layer is currently being developed, one of which is to form a metal electrode layer behind the TiO ₂ photoelectrode layer. However, when the metal electrode layer is formed, the thin film is densely formed, making it difficult to adsorb the photosensitive dye and pass the electrolyte to the TiO ₂ photoelectrode layer after the metal electrode layer is formed, and to operate the normal dye-sensitized solar cell. In addition, the conventional dye-sensitized solar cell has a problem that the electrical energy generation efficiency is slightly lower than the solar cell of the other structure.

The present invention has been made to solve the above problems, it is possible to reduce the manufacturing cost and simplify the manufacturing process, to facilitate the adsorption of photosensitive dyes and electrolyte through the TiO ₂ photoelectrode layer and to drive a normal dye-sensitized solar cell It is an object of the present invention to provide a dye-sensitized solar cell and a method of manufacturing the same.

In addition, an object of the present invention is to provide a dye-sensitized solar cell and a method of manufacturing the same that can improve the electrical energy generation efficiency of the dye-sensitized solar cell.

The problem to be solved by the present invention is not limited to the above-mentioned problem, another problem to be solved by the present invention not mentioned here is apparent to those skilled in the art from the following description. Can be understood.

Is formed in the present invention the front transparent substrate onto a small area than the front transparent substrate in accordance with the sensitive dyes formed on the TiO ₂ optical electrode layer is light sensitive dye adsorption and, TiO ₂ optical electrode and including a porous metal electrode layer to the electrolyte passes through In the solar cell, the porous metal electrode layer is further formed at the edge portion of the front side surface formed by the edge portion on the front transparent substrate and the TiO ₂ photoelectrode layer and the front transparent substrate, and the edge portion of the TiO ₂ photoelectrode layer is formed on the front transparent substrate. It is characterized in that formed on the porous metal electrode layer formed on the edge portion.

In addition, the porous metal electrode layer of the present invention is characterized in that any one of Ti, Al, Ag or Cu.

In addition, the porous metal electrode layer of the present invention is characterized in that the thickness is thinner than the TiO ₂ photoelectrode layer.

In addition, the dye-sensitized solar cell according to the present invention, the front transparent substrate and the rear transparent substrate forming the outermost surface; A transparent conductive layer formed on the rear transparent substrate; A metal thin film catalyst electrode layer formed on the transparent conductive layer; A spacer forming and sealing a gap between the front transparent substrate and the rear transparent substrate; And an electrolyte formed between the gaps.

In addition, another dye-sensitized solar cell according to the present invention, the front transparent substrate and the rear transparent substrate forming the outermost surface; A metal electrode layer formed on the back transparent substrate and having the same material as the porous metal electrode layer; A metal thin film catalyst electrode layer formed on the metal electrode layer; A spacer forming and sealing a gap between the front transparent substrate and the rear transparent substrate; And an electrolyte formed between the gaps.

The method for manufacturing a dye-sensitized solar cell, which forms a TiO ₂ photoelectrode layer on which a photosensitive dye is adsorbed on a front transparent substrate, and forms a porous metal electrode layer through which an electrolyte passes on the TiO ₂ photoelectrode layer, is made of TiO _2. Forming the photoelectrode layer and the porous metal electrode layer on the edge of the front transparent substrate, and forming the TiO ₂ photoelectrode layer in a narrower area than the front transparent substrate, wherein the edge of the TiO ₂ photoelectrode layer is formed on the front transparent substrate. Forming a front transparent substrate in which the TiO ₂ photoelectrode layer is formed in parallel in the chamber, and depositing a metal electrode material by electron beam evaporation. a step of further forming a metal electrode layer, a porous to the step portion on the front side of the TiO ₂ layer and the light transparent substrate forming the front It characterized by forming, including the step of further forming an electrode layer in.

In addition, in the method for manufacturing a dye-sensitized solar cell according to the present invention, the porous metal electrode layer of the stepped portion of the present invention is installed by tilting the front transparent substrate on which the metal electrode material is deposited at an acute angle in a chamber, and then depositing the metal electrode material by an e-beam deposition method. While depositing, it is characterized in that formed by varying the tilting direction.

Further, another method of manufacturing a dye-sensitized solar cell according to the present invention is characterized in that the porous metal electrode layer of the stepped portion is formed by side printing a metal electrode material paste of the same material as the metal electrode material on the stepped portion. It is done.

In addition, the porous metal electrode layer of the present invention is characterized by being formed of any one of the metal electrode material of Ti, Al, Ag or Cu.

In addition, the porous metal electrode layer of the present invention is characterized by forming a thinner thickness than the TiO ₂ photoelectrode layer.

In addition, the method of manufacturing a dye-sensitized solar cell according to the present invention, after forming a porous metal electrode layer, adsorbing the photosensitive dye in the TiO ₂ photoelectrode layer; Forming a transparent conductive layer on the back transparent substrate paired with the front transparent substrate; Forming a metal thin film catalyst electrode layer on the transparent conductive layer; Forming a spacer between the front transparent substrate and the rear transparent substrate to form a spacer; And injecting an electrolyte between the intervals.

In addition, another method of manufacturing a dye-sensitized solar cell according to the present invention, after forming a porous metal electrode layer, adsorbing a photosensitive dye in the TiO ₂ photoelectrode layer; Forming a metal electrode layer of the same material as the porous metal electrode layer on the rear transparent substrate paired with the front transparent substrate; Forming a metal thin film catalyst electrode layer on the metal electrode layer; Forming a spacer between the front transparent substrate and the rear transparent substrate to form a spacer; And injecting an electrolyte between the intervals.

By means of solving the above problems, the dye-sensitized solar cell and the manufacturing method according to the present invention can reduce the manufacturing cost and simplify the manufacturing process, and facilitate the adsorption of the photosensitive dye to the TiO ₂ photoelectrode layer and the passage of the electrolyte. It is possible to drive normal dye-sensitized solar cell.

In addition, the dye-sensitized solar cell and the manufacturing method according to the present invention has the effect of improving the electrical energy generation efficiency of the dye-sensitized solar cell.

1 is a view for explaining a dye-sensitized solar cell according to an embodiment of the present invention.
2A to 2F are views for explaining a method of manufacturing a dye-sensitized solar cell according to an embodiment of the present invention.
3 is a view for explaining a method for manufacturing a dye-sensitized solar cell according to another embodiment of the present invention.

Specific matters including the problem to be solved, the solution to the problem, and the effects of the present invention as described above are included in the following embodiments and the drawings. Advantages and features of the present invention and methods for achieving them will be apparent with reference to the embodiments described below in detail with the accompanying drawings. Like reference numerals refer to like elements throughout.

Hereinafter, with reference to the accompanying drawings will be described in detail the present invention.

1 is a view for explaining a dye-sensitized solar cell according to an embodiment of the present invention.

As shown in FIG. 1, the dye-sensitized solar cell according to the embodiment of the present invention includes the transparent substrates 111 and 112, the TiO ₂ photoelectrode layer 120, the porous metal electrode layer 130, and the transparent conductive layer 140. , A metal thin film catalyst electrode layer 150, a spacer 160, and an electrolyte 170.

The transparent substrates 111 and 112 are formed of the front transparent substrate 111 and the rear transparent substrate 112 to form the outermost surface of the dye-sensitized solar cell. The transparent substrates 111 and 112 form a foundation for forming the above components, and are preferably formed of a glass material or a polymer resin material to transmit external sunlight into the dye-sensitized solar cell.

The TiO ₂ photoelectrode layer 120 is formed on the front transparent substrate 111 with a narrower area than the front transparent substrate 111. In addition, since the outer surface of the TiO ₂ photoelectrode layer 120 is sealed by the spacer 160, the TiO ₂ photoelectrode layer 120 is positioned only in the cell of the dye-sensitized solar cell as shown in FIG. 1. The TiO ₂ photoelectrode layer 120 absorbs a large amount of photosensitive dye and increases the surface area by forming a nanoporous structure to facilitate the electrochemical reaction with the electrolyte.

The porous metal electrode layer 130 is formed on the TiO ₂ photoelectrode layer 120 and forms a porous structure to smoothly pass the electrolyte 170. The porous metal electrode layer 130 is formed on the edge portion of the front transparent substrate 111 and exposed to the outside. The electrons are collected from the TiO ₂ photoelectrode layer 120 and output to the outside.

In addition, the dye-sensitized solar cell according to an embodiment of the present invention has a structure in which the edge portion of the TiO ₂ photoelectrode layer 120 is formed on the porous metal electrode layer 130 formed on the edge portion on the front transparent substrate 111, That is, the porous metal electrode layer 130 has a structure extending further between the front transparent substrate 111 and the TiO ₂ photoelectrode layer 120. According to this structure, the porous metal electrode layer 130 has a shape that covers not only the rear and side surfaces of the TiO ₂ photoelectrode layer 120 but also a part of the front surface. Accordingly, in the dye-sensitized solar cell according to the embodiment of the present invention, the contact area between the metal electrode layer 130 and the TiO ₂ photoelectrode layer 120 is increased as compared with the conventional dye-sensitized solar cell, and the TiO ₂ photoelectrode layer The ability to collect electrons from 120 can be further improved. Therefore, the electrical energy generation efficiency of the dye-sensitized solar cell can be improved.

In addition, the porous metal electrode layer 130 is an electrode layer employed to eliminate the transparent front layer of the conventional front, while reducing the manufacturing cost of the dye-sensitized solar cell, while increasing the electrical conductivity compared to the conventional transparent conductive layer In addition, the transparent conductive layer is removed from the front surface to increase light transmittance, thereby increasing electrical energy generation efficiency. The porous metal electrode layer 130 is preferably formed of any one metal material of titanium (Titanium), Al (aluminum), Ag (argentum), or Cu (cuprum) having excellent electrical conductivity. In addition, TiO ₂ optical electrode layer 120 while the thickly formed to widen a surface area, porous metal electrode layer 130 is TiO ₂ light so as to improve the operating efficiency of such forming easy access to the porous structure and which facilitate the electrolyte passes through It is preferable to form a thickness thinner than the electrode layer 120.

In addition, in one embodiment of the present invention, the porous metal electrode layer 130 extends to the step portion of the front side surface formed by the TiO ₂ photoelectrode layer 120 and the front transparent substrate 111 and the edge portion on the front transparent substrate 111. It is formed. This is to solve the above-mentioned problem, the porous metal electrode layer 130 is formed to the edge portion on the front transparent substrate 111 without breaking in the step portion, it is possible to drive the dye-sensitized solar cell normally. Furthermore, the structure in which the edge portion of the TiO ₂ photoelectrode layer 120 is formed on the porous metal electrode layer 130 formed on the edge portion on the front transparent substrate 111 may further prevent breakage of the stepped portion.

On the other hand, the porous structure is formed by an electron beam evaporation (electron beam evaporation) method, the method of forming a metal electrode layer of the porous structure, the method of forming a metal electrode layer on the step portion, and the like for more detailed description With reference to Figures 2a to 3 will be described later.

The transparent conductive layer 140 is formed on the rear transparent substrate 112, and a material thereof is FTO (F: SnO ₂ ), indium tin oxide (ITO), or the like.

The metal thin film catalyst electrode layer 150 is formed on the transparent conductive layer 140, and the material is Pt (platinum), graphite, or the like having a catalytic function.

The spacer 160 forms a gap for injecting the electrolyte 170 between the front transparent substrate 111 and the rear transparent substrate 112, while sealing the gap from the outside. The spacer 160 is formed of a polymer resin film material.

The electrolyte 170 is formed between the gaps formed by the spacers 160 and generates an electric energy by causing an electrochemical reaction together with the electrode layers described above. Electrolyte 170 contains iodide ions (I ⁻ ) and triiodide ions (I ₃ ⁻ ).

The operating principle of the dye-sensitized solar cell according to the embodiment of the present invention configured as described above is as follows. First, photo-excited electrons generated by photosensitive dye absorbing light are injected into the TiO ₂ photoelectrode layer 120, and the transparent conductive layer 140 and the metal thin film catalyst electrode layer 150 are formed through the external circuit in the porous metal electrode layer 130. The counter electrode (TiO ₂ photoelectrode layer 120 and the electrode consisting of the porous metal electrode layer 130 is also referred to as an operating electrode) made of (). In addition, the photosensitive dye, which emits electrons and is in an oxidized state, receives electrons from I ⁻ in the electrolyte 170 solution and is regenerated. At this time, I ⁻ is oxidized to I ₂ and becomes I ₃ ⁻ by bonding with excess I ⁻ . I ₃ ^{−, which} has reached the surface of the counter electrode, receives electrons from the counter electrode and is reduced to regenerate into I ⁻ .

2A to 2F are views for explaining a method of manufacturing a dye-sensitized solar cell according to an embodiment of the present invention.

First, referring to FIG. 2A, the porous metal electrode layer 130 is formed on the edge portion of the front transparent substrate 111 made of soda lime glass. In this case, as a method for forming the porous metal electrode layer 130 pattern on the edge portion, a method of forming a pattern using a mask before deposition of the porous metal electrode layer 130 may be used, or the entire surface of the transparent substrate may be used. After forming the porous metal electrode layer 130, a method of removing a desired portion by a photolithography method is used.

Next, referring to FIG. 2B, the TiO ₂ electrode material paste is applied to a narrower area than the front transparent substrate 111 by a doctor blade (Dr. Blade) method, but the edge portion of the TiO ₂ photoelectrode layer 120 is formed on the front surface thereof. After coating so as to form on the porous metal electrode layer 130 formed on the edge portion on the transparent substrate 111, it is heat-treated at a high temperature of approximately 450 ℃. TiO ₂ with anatase crystal structure with even nanoporous particle distribution of 15nm ~ 20nm size through high temperature heat treatment The photoelectrode layer 120 is formed.

Next, referring to FIG. 2C, TiO ₂ After the front transparent substrate 111 on which the photoelectrode layer 120 is formed is installed in parallel in a chamber (not shown), the porous metal of Ti material is formed on the front transparent substrate 111 by electron beam evaporation. The electrode layer 130 is formed. There are various kinds of thin film deposition methods, such as sputtering and vacuum deposition. Among them, the two-beam deposition method has a simple principle, and the deposition equipment has a simple advantage. In addition, the thin film obtained by the e-beam evaporation method is excellent in porosity (porosity) than the thin film by the other deposition method, the photosensitive dye and electrolyte can pass through the metal electrode layer when applied to the dye-sensitized solar cell. Therefore, in the exemplary embodiment of the present invention, the porous metal electrode layer 130 may be formed on the TiO ₂ photoelectrode layer to facilitate the adsorption of the photosensitive dye and the passage of the electrolyte. Meanwhile, the porous metal electrode layer 130 may be formed of Al, Ag, or Cu material having excellent electrical conductivity in addition to the Ti material. In addition, the porous metal electrode layer 130 may be formed to be relatively thinner than the TiO ₂ photoelectrode layer 120.

At this time, when the substrate is deposited in parallel, as shown in Figure 2c TiO ₂ The porous metal electrode layer 130 and the TiO ₂ on the front transparent substrate 111 may be formed by the thickness of the photoelectrode layer 120. Step coverage occurs in which the porous metal electrode layer 130 on the photoelectrode layer 120 is opened. As mentioned above, this is also a factor causing a problem of inhibiting the conventional dye-sensitized solar cell driving.

To improve this, as shown in FIG. 2D, the front transparent substrate 111 on which the metal electrode material is deposited is installed at an acute angle, preferably at about 45 °, in the chamber, and further Ti metal electrode material 131 is deposited. The formation of the porous metal electrode layer 130 is completed. In this case, the TiO ₂ photoelectrode layer 120 and the front transparent substrate 111 may be deposited at different inclination directions so that the metal electrode material 131 is deposited on the stepped portion of the front side surface. As a result, the porous metal electrode layer 130 is formed to the edge portion on the front transparent substrate 111 without being cut off at the stepped portion, whereby the dye-sensitized solar cell can be normally driven. In addition, when the metal electrode material is deposited by tilting the front transparent substrate 111, the porosity may be further improved, thereby improving the efficiency of the dye-sensitized solar cell.

Next, the front transparent substrate 111 on which the porous metal electrode layer 130 is formed is immersed in a photosensitive dye solution (Ruthenium 535-bisTBA, Acetonitrile, tert-Butanol mixed solution) to immerse the photosensitive dye in TiO _2. The photoelectrode layer 120 is adsorbed.

Next, referring to FIG. 2E, a transparent conductive layer 140 made of FTO or ITO material is formed on the rear transparent substrate 112 paired with the front transparent substrate 111, and on the transparent conductive layer 140. A metal thin film catalytic electrode layer 150 is formed of Pt.

Next, referring to FIG. 2F, after forming a spacer 160 to form and seal a gap between the front transparent substrate 111 and the rear transparent substrate 112, an electrolyte 170 is injected between the gaps. Complete the dye-sensitized solar cell according to an embodiment of the invention.

As described above, in one embodiment of the present invention, the step coverage improvement is complemented by a method of forming the edge portion of the TiO ₂ photoelectrode layer on the porous metal electrode layer formed on the edge portion on the front transparent substrate. The electrical energy generation efficiency can be further improved. In addition, the manufacturing method of the dye-sensitized solar cell according to an embodiment of the present invention is to reduce the manufacturing cost and simplify the manufacturing process through the porous formation of the metal electrode layer by the two-beam evaporation method, and step coverage improvement by the tilting deposition method It is possible to facilitate the adsorption of the photosensitive dye and the electrolyte to the TiO ₂ photoelectrode layer and to allow normal dye-sensitized solar cell driving.

<Other Embodiments>

(A) As another embodiment of the present invention, the step coverage can be improved by replacing the tilt deposition method of FIG. 2D with the side print method. A more detailed description thereof will be described with reference to FIG. 3.

3 is a view for explaining a method for manufacturing a dye-sensitized solar cell according to another embodiment of the present invention. As shown in FIG. 3, as a next step of the parallel deposition of FIG. 2C, a metal electrode material paste of the same material as that of the metal electrode material is formed on a step portion of the front side surface formed by the TiO ₂ photoelectrode layer and the front transparent substrate. Side print 132 is completed to form the porous metal electrode layer. The side printing method is a method of forming a separate layer on a side surface of a semiconductor substrate, and the like, and there is a pattern printing method or an ink-jet printing method. In one embodiment of the present invention, step coverage can be prevented. If so, you can use any method. As described above, through the simple manufacturing process, the porous metal electrode layer is formed to the edge portion on the front transparent substrate without disconnection at the stepped portion, whereby the dye-sensitized solar cell can be normally driven.

(B) As another embodiment of the present invention, it is possible to form a metal electrode layer instead of the transparent conductive layer (see numeral 140 in FIGS. 1 to 2F) formed on the rear transparent substrate. This is to remove the expensive transparent conductive layer from the rear transparent substrate, and in another embodiment of the present invention, the metal is made of a metal electrode material of the same material as the porous metal electrode layer (see reference numeral 130 in FIGS. 1 to 2F). An electrode layer is formed. In this case, since the metal electrode layer does not have to have a porous structure, the metal electrode layer may be formed by another thin film deposition method in addition to the two-beam deposition method. In addition, it can be confirmed through experiments that the dye-sensitized solar cell operates without any problem even when the transparent conductive layer is replaced with the metal electrode layer.

(C) TiO ₂ by the method of only tilting as shown in Figure 2d If the porous metal electrode layer 130 can be sufficiently formed on the upper surface of the photoelectrode layer 120, it is also possible to omit the step of installing and depositing in parallel in FIG. 2C.

As such, according to other embodiments of the present invention, the manufacturing cost of the dye-sensitized solar cell can be lowered more effectively and the manufacturing process can be simplified.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, the above-described embodiments are to be understood as illustrative and not restrictive in all respects, and the scope of the present invention is indicated by the following claims rather than the detailed description, and the meaning and scope of the claims and their All changes or modifications derived from an equivalent concept should be construed as being included in the scope of the present invention.

111, 112: transparent substrate
120: TiO ₂ photoelectrode layer
130: porous metal electrode layer
131: metal electrode material
132: metal electrode paste
140: transparent conductive layer
150: thin metal catalyst electrode layer
160: spacer
170: electrolyte

Claims (12)

A front transparent substrate, a rear transparent substrate forming an outermost surface, a TiO ₂ photoelectrode layer formed on the front transparent substrate with a narrower area than the front transparent substrate, and having a photosensitive dye adsorbed thereon, and on the TiO ₂ photoelectrode layer A gap formed between the porous metal electrode layer formed through the electrolyte, the conductive layer formed on the rear transparent substrate, the metal thin film catalyst electrode layer formed on the conductive layer, and the front transparent substrate and the rear transparent substrate. In the dye-sensitized solar cell comprising a spacer to seal by and an electrolyte formed between the gap,
The porous metal electrode layer is further formed on the edge portion on the front transparent substrate, the stepped portion on the front side of the TiO ₂ photoelectrode layer and the front transparent substrate,
The edge portion of the TiO ₂ photoelectrode layer, the dye-sensitized solar cell, characterized in that formed on the porous metal electrode layer formed on the edge portion on the front transparent substrate. The method of claim 1,
The porous metal electrode layer is a dye-sensitized solar cell, characterized in that any one of Ti, Al, Ag or Cu. The method of claim 1,
The porous metal electrode layer is a dye-sensitized solar cell, characterized in that thinner than the TiO ₂ photoelectrode layer. The dye-sensitized solar cell according to any one of claims 1 to 3, wherein the conductive layer is a transparent conductive layer. The dye-sensitized solar cell according to any one of claims 1 to 3, wherein the conductive layer is a metal electrode layer. Forming a TiO ₂ photoelectrode layer on which the photosensitive dye is adsorbed on a front transparent substrate, and forming a porous metal electrode layer through which an electrolyte passes on the TiO ₂ photoelectrode layer; After forming the porous metal electrode layer, adsorbing the photosensitive dye into the TiO ₂ photoelectrode layer; Forming a conductive layer on a rear transparent substrate paired with the front transparent substrate; Forming a metal thin film catalyst electrode layer on the conductive layer; Forming a spacer between the front transparent substrate and the rear transparent substrate to form a gap; Injecting an electrolyte between the interval; In the manufacturing method of a dye-sensitized solar cell comprising,
The TiO ₂ photoelectrode layer and the porous metal electrode layer,
Forming the porous metal electrode layer on an edge portion of the front transparent substrate;
And the step of forming the TiO ₂ electrode layer to the optical edge portion of the TiO ₂ electrode, but the light is formed by the front narrower area than the transparent substrate, and, on the porous metal electrode layer formed on the rim portion on the front transparent substrate,
Installing a front transparent substrate on which the TiO ₂ photoelectrode layer is formed in parallel to a substrate holder in a chamber, and then depositing a metal electrode material by electron beam evaporation to further form the porous metal electrode layer;
And forming the porous metal electrode layer on the stepped portion of the front side surface formed by the TiO ₂ photoelectrode layer and the front transparent substrate. The method of claim 6,
The stepped porous metal electrode layer is formed by tilting the front transparent substrate on which the metal electrode material is deposited at an acute angle to the substrate holder in the chamber, and then depositing the metal electrode material by an e-beam evaporation method. Method for producing a dye-sensitized solar cell, characterized in that. The method of claim 6,
The method of manufacturing a dye-sensitized solar cell, wherein the porous metal electrode layer of the stepped portion is formed by side printing a metal electrode material paste of the same material as the metal electrode material on the stepped portion. The method of claim 6,
The porous metal electrode layer is a method of manufacturing a dye-sensitized solar cell, characterized in that formed of any one of the metal electrode material of Ti, Al, Ag or Cu. The method of claim 6,
The porous metal electrode layer is a method of manufacturing a dye-sensitized solar cell, characterized in that to form a thinner than the TiO ₂ photoelectrode layer. The method for manufacturing a dye-sensitized solar cell according to any one of claims 6 to 10, wherein the conductive layer is a transparent conductive layer. The method for manufacturing a dye-sensitized solar cell according to any one of claims 6 to 10, wherein the conductive layer is a metal electrode layer.

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