JP2005294002A - Photoelectric conversion element - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a photoelectric conversion element excellent in power generation efficiency and easy to repair or replace when a fault is generated. <P>SOLUTION: A dye-sensitized solar cell 10 is equipped with a working electrode 14 in which a porous oxide semiconductor layer 13 having sensitizing dye carried on the surface is formed on one surface 14a, a counter electrode 18 positioned so as to face one surface 14a, an electrolyte layer 15 formed between the working electrode 14 and the counter electrode 18, and a housing 30 for housing them. The housing 30 is constituted of a main body 31 covering the side of a laminated body 20 and the other surface 18b of the counter electrode 18 and a cover 32 coming in contact with the other surface 14b of the working electrode 14 and fixing the laminated body 20 to the main body 31, and the cover 32 is formed with a member having an optical property transmitting sunlight and removably fixed to the main body 31. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a photoelectric conversion element such as a dye-sensitized solar cell.

Against the backdrop of environmental problems and resource problems, solar cells as clean energy are attracting attention. Some solar cells use single crystal, polycrystalline or amorphous silicon. However, conventional silicon-based solar cells are not widely used because of problems such as high production costs and insufficient supply of raw materials.
In addition, a compound solar cell such as a Cu-In-Se system (also referred to as a CIS system) has been developed, and this compound solar cell has excellent characteristics such as extremely high photoelectric conversion efficiency. However, this compound solar cell is not popular due to problems such as cost and environmental load.

  In contrast to these solar cells, dye-sensitized solar cells proposed by the group of Gretzel et al. In Switzerland are attracting attention as photoelectric conversion elements that are inexpensive and can provide high photoelectric conversion efficiency.

FIG. 3 is a schematic cross-sectional view showing an example of a conventional dye-sensitized solar cell.
This dye-sensitized solar cell 100 is a first substrate on which a porous semiconductor electrode (hereinafter also referred to as “dye-sensitized semiconductor electrode”) 103 carrying a sensitizing dye is formed on one surface. 101, a second substrate 105 on which a conductive film 104 is formed, and an electrolyte layer 106 made of a gel electrolyte or the like enclosed between them.

  A light transmissive plate material is used as the first substrate 101, and a transparent conductive film 102 is provided on the surface of the first substrate 101 in contact with the dye-sensitized semiconductor electrode 103 in order to impart conductivity. The working electrode 108 is composed of the first substrate 101, the transparent conductive film 102, and the dye-sensitized semiconductor electrode 103.

 On the other hand, as the second substrate 105, a conductive film 104 made of carbon, platinum, or the like is provided on the surface in contact with the electrolyte layer 106 in order to impart conductivity. Further, a counter electrode 109 is constituted by the second substrate 105 and the conductive film 104.

 In the dye-sensitized solar cell 100, the first substrate 101 and the second substrate 105 are arranged at a predetermined interval so that the dye-sensitized semiconductor electrode 103 and the conductive film 104 face each other. A sealing material 107 made of a thermoplastic resin is provided at the peripheral edge. The sealing material 107 serves to prevent leakage of the electrolyte contained in the electrolyte layer 106 and volatilization of volatile components.

Next, an outline of a method for manufacturing the dye-sensitized solar cell 100 will be described.
First, the working electrode 108 and the counter electrode 109 are laminated via the sealing material 107 made of thermoplastic resin, and then the sealing material is passed through the working electrode 108 and the counter electrode 109, or either the working electrode 108 or the counter electrode 109. By heating and melting 107, the working electrode 108 and the counter electrode 109 are bonded to each other to assemble a laminate including a pair of electrodes (the working electrode 108 and the counter electrode 109).
Next, an electrolytic solution containing oxidizing / reducing species such as iodine / iodide ions is filled between the working electrode 108 and the counter electrode 109 through an inlet 110 provided so as to penetrate the counter electrode 109, and then the inlet 110 is changed. A dye-sensitized solar cell 100 comprising a pair of electrodes (working electrode 108 and counter electrode 109) and an electrolyte layer 106 sandwiched between them is obtained by closing the lid 111 with a lid 111 and forming an electrolyte layer 106 for charge transfer. (For example, refer to Patent Document 1 and Non-Patent Document 1.)

 In the production of the dye-sensitized solar cell 100 as described above, the sensitizing dye carried on the dye-sensitized semiconductor electrode 103 may be deteriorated by heat that melts the sealing material 107 when the laminate is assembled. . In addition, after assembling the laminate, the electrolytic solution had to be filled between the working electrode 108 and the counter electrode 109. As a result, when the viscosity of the electrolytic solution is high, there is a problem that it takes a lot of time and labor to fill the electrolytic solution.

Further, since the sealing material 107 is made of a thermoplastic resin, it has a problem that it is not suitable for long-term use because of poor weather resistance.
Furthermore, in order to fill the electrolyte between the working electrode 108 and the counter electrode 109, a predetermined distance is required between these electrodes. As a result, there is a problem that the power generation efficiency of the dye-sensitized solar cell 100 finally obtained decreases.
JP 2002-184478 A N. Pageageriou et al. , J .; Electrochem. Soc. , 143 (10), 3099, 1996.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a photoelectric conversion element that can be manufactured at low cost, has excellent long-term reliability and power generation efficiency, and can be easily repaired or replaced when a failure occurs. And

  In order to solve the above problems, the present invention is a photoelectric conversion element comprising a laminate composed of a working electrode, a counter electrode, and an electrolyte layer formed therebetween, and a housing for housing them, The housing includes a main body that covers the stacked body and a lid that fixes the stacked body to the main body, and the lid provides a photoelectric conversion element that is detachably fixed to the main body.

  The present invention is a photoelectric conversion element comprising a laminate composed of a working electrode, a counter electrode, and an electrolyte layer formed therebetween, and a housing for housing them, the housing comprising the laminate A photoelectric conversion element comprising a main body covering the base and the working electrode being detachably fixed to the main body is provided.

  In the photoelectric conversion element, an elastic member is preferably interposed between the counter electrode and the housing.

 Since the photoelectric conversion element of the present invention does not need to be filled with an electrolytic solution between the working electrode and the counter electrode after the stacked body is assembled, the process can be simplified. Moreover, since the photoelectric conversion element of this invention does not require the sealing material which consists of thermoplastic resins etc., it is excellent in a weather resistance, ie, long-term reliability. Furthermore, since the photoelectric conversion element of the present invention does not require a distance between the working electrode and the counter electrode, it has excellent power generation efficiency.

  In the photoelectric conversion element of the present invention, the working electrode also serves as the lid of the main body, and the portion of the working electrode that is involved in power generation is not covered by the lid. Therefore, the dye-sensitized solar cell is more excellent in power generation efficiency. Furthermore, the working electrode is detachably fixed to the main body of the housing, the working electrode is in direct contact with the main body, and the laminate is sealed by the main body. It can be removed and repaired, or replaced with a non-defective product. In addition, since the main body can be used repeatedly, the manufacturing cost can be reduced.

  Furthermore, in the photoelectric conversion element of the present invention, if an elastic member is interposed between the counter electrode and the housing, even if an external force is applied in the stacking direction of the stacked body, there is a lateral shift between the working electrode and the counter electrode. Generation | occurrence | production can be suppressed. Further, the laminated body can be firmly fixed to the casing while maintaining flexibility in the laminating direction by the elastic member.

  Hereinafter, a photoelectric conversion element embodying the present invention will be described with reference to the drawings.

FIG. 1 is a schematic cross-sectional view showing a dye-sensitized solar cell as a first embodiment of a photoelectric conversion element according to the present invention.
In FIG. 1, 10 is a dye-sensitized solar cell, 11 is a first substrate, 12 is a transparent conductive film, 13 is a porous oxide semiconductor layer, 14 is a working electrode, 15 is an electrolyte layer, and 16 is a second. , 17 is a conductive film, 18 is a counter electrode, 19 is an elastic member, 20 is a laminate, 30 is a housing, 31 is a main body, 32 is a lid, 41 is a sealing member, and 42 is a screw. .

  In this dye-sensitized solar cell 10, a porous oxide semiconductor layer 13 having a sensitizing dye supported on its surface is disposed opposite to a working electrode 14 provided on one surface 14a and the one surface 14a. An electrolyte layer 15 formed between the counter electrode 18 and one surface 14a and a surface 18a of the counter electrode 18 facing the one surface 14a (hereinafter referred to as "one surface 18a of the counter electrode 18"); It is schematically configured from a housing 30 that accommodates them.

  In the dye-sensitized solar cell 10, most of the electrolyte forming the electrolyte layer 15 is impregnated in the void portion of the porous oxide semiconductor layer 13.

  The working electrode 14 is composed of a first substrate 11, a transparent conductive film 12 and a porous oxide semiconductor layer 13 that are sequentially formed on the one surface 11 a.

The counter electrode 18 includes a second substrate 16 and a conductive film 17 formed on the one surface 16a.
(Since the conductive film 17 is described later, it is not necessary to explain what it is here. Here, the configuration of the dye-sensitized solar cell 10 (arrangement of each member, mutual relationship, etc.) Is explained.)

  In the dye-sensitized solar cell 10, a laminate 20 in which the electrolyte layer 15 is sandwiched between the working electrode 14 and the counter electrode 18 functions as a photoelectric conversion element.

In the dye-sensitized solar cell 10, the stacked body 20 is in contact with the concave body body 31 covering the side surface 20 a of the stacked body 20 and the other surface 18 b of the counter electrode 18, and the other surface 14 b of the working electrode 14. It is accommodated in a housing 30 comprising a lid 32 for fixing 20 to the main body 31. Further, the main body 31 is in contact with the other surface 18 b of the counter electrode 18 through the elastic member 19.
The lid 32 is in contact with the main body 31 through the sealing member 41. Further, the lid body 32 is fixed to the main body 31 by screws 42.

  In order to sufficiently seal the stacked body 20 with the housing 30, a fitting portion (not shown) including a groove for fitting the sealing member 41 is used as a lid of the main body 31. It is preferable to provide the surface 31 a in contact with 32 and one surface 32 a of the lid 32.

  By setting it as such a structure, the laminated body 20 is accommodated in the housing | casing 30 in the state by which the upper and lower surfaces were pinched | interposed by the main body 31 and the cover body 32, and was pressed in the lamination direction. In this state, the entire side surface 20 a of the stacked body 20 is covered with the main body 31, and the stacked body 20 is collectively sealed by the housing 30.

 As the first substrate 11, a substrate made of a light-transmitting material is used, and glass, polyethylene terephthalate, polyethylene naphthalate, polycarbonate, polyethersulfone, etc., which are usually used as transparent substrates for solar cells. Anything can be used. The first substrate 11 is appropriately selected from these in consideration of resistance to the electrolytic solution and the like, and a substrate that is as excellent in light transmittance as possible is preferable.

The transparent conductive film 12 is a thin film made of metal, carbon, conductive metal oxide, or the like formed on one surface 11a in order to impart conductivity to the first substrate 11.
In the case where a metal thin film or a carbon thin film is formed as the transparent conductive film 12, a structure that does not significantly impair the transparency of the first substrate 11 is adopted. Examples of the conductive metal oxide that forms the transparent conductive film 12 include indium-tin oxide (ITO), tin oxide (SnO ₂ ), and fluorine-doped tin oxide.

The porous oxide semiconductor layer 13 is provided on the transparent conductive film 12, and a sensitizing dye is supported on the surface thereof. The semiconductor that forms the porous oxide semiconductor layer 13 is not particularly limited, and any semiconductor that can be used to form a porous semiconductor for solar cells can be used. As such a semiconductor, for example, titanium oxide (TiO ₂ ), tin oxide (SnO ₂ ), tungsten oxide (WO ₃ ), zinc oxide (ZnO), niobium oxide (Nb ₂ O ₅ ), or the like can be used. .
Examples of the method for forming the porous oxide semiconductor layer 13 include film formation from a sol-gel method, electrophoretic electrodeposition of fine particles, porous formation with a foaming agent, removal of excess components after application of a mixture with polymer beads, and the like. However, it is not limited to these methods.

 As the sensitizing dye, a ruthenium complex containing a bipyridine structure or a terpyridine structure as a ligand, a metal-containing complex such as porphyrin or phthalocyanine, or an organic dye such as eosin, rhodamine or merocyanine can be applied. Therefore, those exhibiting excitation behavior suitable for the application and the semiconductor used can be selected without particular limitation.

 The electrolyte layer 15 is formed by impregnating a porous oxide semiconductor layer 13 with an electrolytic solution, or after impregnating the porous oxide semiconductor layer 13 with an electrolytic solution, the electrolytic solution is applied to an appropriate gel. A material formed by gelation (pseudo-solidification) using an agent and integrally formed with the porous oxide semiconductor layer 13 is used.

 As the electrolytic solution, an electrolytic solution in which an electrolyte component such as iodine, iodide ion, or tertiary butyl pyridine is dissolved in an organic solvent such as ethylene carbonate or methoxyacetonitrile is used.

 Examples of the gelling agent used when gelling the electrolytic solution include polyvinylidene fluoride, polyethylene oxide derivatives, amino acid derivatives, and the like.

 As the second substrate 16, a metal plate, a synthetic resin plate, or the like is used because it is not necessary to have the same light transmission as the first substrate 11.

 The conductive film 17 is a thin film made of a metal such as platinum, carbon, or the like formed on one surface 16a of the second substrate 16 in order to impart conductivity. As the conductive film 17, for example, a layer of carbon, platinum, or the like, which has been heat-treated after vapor deposition, sputtering, and application of chloroplatinic acid is preferably used, but is not particularly limited as long as it functions as an electrode. Absent.

As the elastic member 19, foamed polyethylene, foamed polyurethane, rubber sponge, or the like is used.
In the dye-sensitized solar cell 10, an external force is applied to the stacked body 20 in the stacking direction by sealing the stacked body 20 with the housing 30. By interposing the elastic member 19 between the counter electrode 18 and the main body 31, it is possible to suppress the occurrence of lateral deviation between the working electrode 14 and the counter electrode 18 due to this external force. In addition, the laminate 20 can be firmly fixed to the housing 30 by the elastic member 19 while maintaining flexibility in the stacking direction.

 Although it does not specifically limit as a raw material which forms the main body 31, Various metals, ceramics, various synthetic resins, etc. are used.

  As the lid body 32, a member having optical characteristics that transmits sunlight is used. Although it does not specifically limit as a member which has the optical characteristic which permeate | transmits sunlight, For example, the member which consists of a transparent and rigid material, such as an acryl, a polycarbonate, a polyvinyl chloride, soda glass, is mentioned.

  As the sealing member 41, an elastic material such as nitrile rubber, silicon rubber, urethane rubber, or fluorine rubber, an O-ring made of polytetrafluoroethylene, a gasket, or the like is used.

  Any screw 42 can be used as long as it can join and fix the lid 32 to the main body 31.

  In this embodiment, the screw 42 is exemplified as means for joining and fixing the lid 32 to the main body 31, but the photoelectric conversion element of the present invention is not limited to this. In the photoelectric conversion element of the present invention, as a means for joining and fixing the lid body to the frame body, for example, a flap shape provided rotatably on the lid body at a locked portion provided in the frame body Means for locking the locking part of the frame, and means for clamping by the clamping force of a spring having a U-shaped cross-section sleeve mounted on the outside of the housing so as to contact the surface of the frame part, the pressing part and the lid of the frame Etc. can also be used. The means for locking the locking portion to the locked portion may be a means for fitting the fitting portion to the fitting portion.

As described above, in the dye-sensitized solar cell 10, it is not necessary to fill the electrolyte solution between the working electrode 14 and the counter electrode 18 after the stacked body 20 is assembled, so that the process can be simplified. . Moreover, since the dye-sensitized solar cell 10 does not require a sealing material made of a thermoplastic resin or the like, it has excellent weather resistance, that is, long-term reliability. Furthermore, the dye-sensitized solar cell 10 is excellent in power generation efficiency because it is not necessary to provide a distance between the working electrode 14 and the counter electrode 18.
In the dye-sensitized solar cell 10, the lid body 32 is detachably fixed to the main body 31 via the sealing member 41, and the laminated body 20 is sealed by the housing 30. If a problem occurs, it can be removed from the housing 30 for repair or replaced with a non-defective product. Moreover, since the housing | casing 30 can be used repeatedly, manufacturing cost can also be reduced.

Next, an embodiment of a method for producing a photoelectric conversion element according to the present invention will be described with reference to FIG.
In this embodiment, first, a working electrode 14 is prepared in which a transparent conductive film 12 and a porous oxide semiconductor layer 13 are sequentially formed on one surface 11a of the first substrate 11 by a predetermined method.

  Next, the porous oxide semiconductor layer 13 is dropped and impregnated with an electrolytic solution to which a gelling agent has been added in advance, and then the electrolytic solution is gelled so as to be integrated with the porous oxide semiconductor layer 13. The electrolyte layer 15 is formed.

  Next, the working electrode 14 is disposed in the main body 31 so that the other surface 18 b of the counter electrode 18 contacts the bottom surface 31 a inside the main body 31 via the elastic member 19.

  Next, a laminate 20 is formed in the main body 31 such that the counter electrode 18 is stacked on the working electrode 13 so that the conductive film 17 overlaps the electrolyte layer 15, and the electrolyte layer 15 is sandwiched between the working electrode 14 and the counter electrode 18.

  Next, the lid body 32 is disposed so as to cover the other surface 14 b of the working electrode 14.

  Next, while applying a load from the outside of the lid 32 in the laminating direction of the laminate 20, the lid 32 is fixed to the main body 31 with the screw 42 via the sealing member 41, and the laminate 20 is sealed with the casing 30. By stopping, the dye-sensitized solar cell 10 is obtained.

FIG. 2 is a schematic cross-sectional view showing a dye-sensitized solar cell as a second embodiment of the photoelectric conversion element according to the present invention.
In FIG. 2, 50 is a dye-sensitized solar cell, 51 is a first substrate, 52 is a transparent conductive film, 53 is a porous oxide semiconductor layer, 54 is a working electrode, 55 is an electrolyte layer, and 56 is a second. , 57 is a conductive film, 58 is a counter electrode, 59 is an elastic member, 60 is a laminate, 70 is a housing (sometimes referred to as a “main body”), 81 is a sealing member, and 82 is a screw. ing.

  In this dye-sensitized solar cell 50, a porous oxide semiconductor layer 53 having a sensitizing dye supported on the surface thereof is disposed opposite to the working electrode 54 provided on one surface 54a and the one surface 54a. An electrolyte layer 55 formed between the counter electrode 58, one surface 54 a and a surface (hereinafter referred to as “one surface”) 58 a of the counter electrode 58 facing the surface, and a housing for housing these layers. 70.

  In the dye-sensitized solar cell 50, the electrolyte layer 55 is formed integrally with the porous oxide semiconductor layer 53.

  The working electrode 54 includes a first substrate 51, and a transparent conductive film 52 and a porous oxide semiconductor layer 53 that are sequentially formed on the one surface 51a. Further, the peripheral edge 54 c of the working electrode 54 is not provided with the porous oxide semiconductor layer 53, and is composed of the first substrate 51 and the transparent conductive film 52.

  The counter electrode 58 includes a second substrate 56 and a conductive film 57 formed on the one surface 56a.

  In the dye-sensitized solar cell 50, a laminate 60 in which the electrolyte layer 55 is sandwiched between the working electrode 54 and the counter electrode 58 functions as a photoelectric conversion element.

  In the dye-sensitized solar cell 50, the stacked body 60 is housed in a body 70 having a concave cross section that covers the side surface 60 a of the stacked body 60 and the other surface 58 b of the counter electrode 58. Further, the main body 70 is in contact with the other surface 58 b of the counter electrode 58 via the elastic member 59.

Further, the peripheral edge 54 c of the working electrode 54 is in direct contact with the main body 70 via the sealing member 81. Further, the peripheral edge 54 c of the working electrode 54 is fixed to the main body 70 by a screw 82.
In order to sufficiently seal the laminate 60 with the main body 70, a fitting portion (not shown) including a groove for fitting the sealing member 81 is used as the peripheral portion 54 c of the main body 70. It is preferable to provide the surface 70a in contact with the body 70 and the surface 54d in contact with the main body 70 of the peripheral edge 54c.

  With such a configuration, the entire surface of the side surface 60a of the laminate 60 is covered with the casing 70, and the laminate 60 is collectively sealed by the casing 70 while being pressed in the stacking direction. The

As the first substrate 51, the same substrate as the first substrate 11 is used.
As the transparent conductive film 52, the same thing as the said transparent conductive film 12 is provided.
As a semiconductor for forming the porous oxide semiconductor layer 53, the same semiconductor as that for forming the porous oxide semiconductor layer 13 is used.

As the sensitizing dye, those similar to those in the first embodiment described above are used.
As the electrolyte layer 55, the same one as the electrolyte layer 15 is provided.
As the electrolytic solution, the same one as in the first embodiment described above is used.
As the gelling agent, those similar to those in the first embodiment described above are used.

As the second substrate 56, the same substrate as the second substrate 16 is used.
The conductive film 57 is the same as the conductive film 17.
As the elastic member 59, the same one as the elastic member 19 is used.

The material forming the housing 70 is not particularly limited, but the same material as that forming the main body 31 is used.
As the sealing member 81, the same member as the sealing member 41 is used.
As the screw 82, the same one as the screw 42 is used.

  In this embodiment, the screw 82 is exemplified as means for joining and fixing the working electrode 54 to the housing 70, but the photoelectric conversion element of the present invention is not limited to this. In the photoelectric conversion element of the present invention, as means for joining and fixing the lid body to the frame body, for example, a flap-like shape provided rotatably on the working electrode at a locked portion provided in the housing There may be used means for locking the locking portion, means for clamping by the clamping force of a spring having a U-shaped cross-section sleeve attached to the outside of the working electrode and the surface of the housing. The means for locking the locking portion to the locked portion may be a means for fitting the fitting portion to the fitting portion.

As described above, in the dye-sensitized solar cell 50, it is not necessary to fill the electrolyte solution between the working electrode 54 and the counter electrode 58 after the stacked body 60 is assembled, so that the process can be simplified. . Further, since the dye-sensitized solar cell 50 does not require a sealing material made of a thermoplastic resin or the like, it has excellent weather resistance, that is, long-term reliability. Furthermore, the dye-sensitized solar cell 50 is excellent in power generation efficiency because it is not necessary to provide a distance between the working electrode 54 and the counter electrode 58.
In addition, since the working electrode 54 also serves as the lid of the housing 70 and the portion of the working electrode 54 involved in power generation is not covered with the lid, the amount of light incident on the portion of the working electrode 54 involved in power generation is reduced. Therefore, the dye-sensitized solar cell 50 is more excellent in power generation efficiency.
In the dye-sensitized solar cell 50, the working electrode 54 is detachably fixed to the housing 70 via the sealing member 81, the working electrode 54 is in direct contact with the housing 70, and the laminate 60 is housed in the housing. Since it is sealed by the body 70, when a defect occurs in the laminated body 60, it can be repaired by removing it from the housing 70 or replaced with a non-defective product. Moreover, since the housing | casing 70 can be used repeatedly, manufacturing cost can also be reduced.

  According to the present invention, it is possible to realize a dye-sensitized solar cell that can efficiently collect generated electrons while maintaining the advantage of easily filling a high-viscosity or gel electrolyte. Further, since the separation from the housing is high without reducing the amount of light incident on the cell, a solar cell with high maintainability and recyclability and low environmental load can be realized.

It is a schematic sectional drawing which shows a dye-sensitized solar cell as 1st embodiment of the photoelectric conversion element which concerns on this invention. It is a schematic sectional drawing which shows a dye-sensitized solar cell as 2nd embodiment of the photoelectric conversion element which concerns on this invention. It is a schematic sectional drawing which shows an example of the conventional dye-sensitized solar cell.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10,50 ... Dye-sensitized solar cell 11,51 ... 1st board | substrate, 12,52 ... Transparent electrically conductive film, 13,53 ... Porous oxide semiconductor layer, 14,54 ... Working electrode, 15, 55 ... Electrolyte layer, 16, 56 ... Second substrate, 17, 57 ... Transparent conductive film, 18, 58 ... Counter electrode, 19, 59 ... Elastic member 20, 60 ... Laminated body, 30, 70 ... Housing, 31 ... Main body, 32 ... Cover, 41, 81 ... Sealing member, 42, 82 ... Screw.

Claims (3)

A photoelectric conversion element comprising a laminate composed of a working electrode, a counter electrode, and an electrolyte layer formed therebetween, and a housing for housing them,
The housing includes a main body that covers the laminated body and a lid that fixes the laminated body to the main body, and the lid is detachably fixed to the main body. . A photoelectric conversion element comprising a laminate composed of a working electrode, a counter electrode, and an electrolyte layer formed therebetween, and a housing for housing them,
The housing includes a main body that covers the stacked body, and the working electrode is detachably fixed to the main body. The photoelectric conversion element according to claim 1, wherein an elastic member is interposed between the counter electrode and the housing.

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