JPH11250944A - Wet solar cell - Google Patents

Wet solar cell

Info

Publication number
JPH11250944A
JPH11250944A JP10045464A JP4546498A JPH11250944A JP H11250944 A JPH11250944 A JP H11250944A JP 10045464 A JP10045464 A JP 10045464A JP 4546498 A JP4546498 A JP 4546498A JP H11250944 A JPH11250944 A JP H11250944A
Authority
JP
Japan
Prior art keywords
solar cell
film
substrate
wet
transparent
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP10045464A
Other languages
Japanese (ja)
Inventor
Kiyoaki Shinohara
清晃 篠原
Hitoshi Ishizawa
均 石沢
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nikon Corp
Original Assignee
Nikon Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nikon Corp filed Critical Nikon Corp
Priority to JP10045464A priority Critical patent/JPH11250944A/en
Publication of JPH11250944A publication Critical patent/JPH11250944A/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01G—CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE
    • H01G9/00—Electrolytic capacitors, rectifiers, detectors, switching devices, light-sensitive or temperature-sensitive devices; Processes of their manufacture
    • H01G9/20—Light-sensitive devices
    • H01G9/2027—Light-sensitive devices comprising an oxide semiconductor electrode
    • H01G9/2031—Light-sensitive devices comprising an oxide semiconductor electrode comprising titanium oxide, e.g. TiO2
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/542—Dye sensitized solar cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy
    • Y02E10/549—Organic PV cells

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Catalysts (AREA)
  • Photovoltaic Devices (AREA)
  • Hybrid Cells (AREA)
  • Inorganic Compounds Of Heavy Metals (AREA)

Abstract

(57)【要約】 【目的】 安価で、簡単な構成により外因による電流の
低下を防止することが可能な湿式太陽電池を提供する。 【解決手段】一方の面に透明導電膜が形成された透明基
板と、該透明基板と対極をなす色素を担持させた半導体
電極が形成された導電性基板との間に電解質を有し、光
電変換によって前記透明導電膜と前記導電性基板との間
に電気エネルギーを発生する湿式太陽電池において、前
記透明基板の他方の面に光触媒膜を形成したことを特徴
とする湿式太陽電池 (57) [Summary] [Object] To provide a wet-type solar cell that is inexpensive and can prevent a decrease in current due to an external factor with a simple configuration. An electrolyte is provided between a transparent substrate having a transparent conductive film formed on one surface thereof and a conductive substrate having a semiconductor electrode carrying a dye opposite to the transparent substrate formed thereon. A wet solar cell, wherein a photocatalytic film is formed on the other surface of the transparent substrate, wherein the wet solar cell generates electric energy between the transparent conductive film and the conductive substrate by conversion.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】本発明は光エネルギーを電気
エネルギーに直接変換する湿式太陽電池に関する。The present invention relates to a wet solar cell for directly converting light energy into electric energy.

【０００２】[0002]

【従来技術】従来、光エネルギーを電気エネルギーに直
接変換する方法としては、シリコン半導体や色素を用い
た光化学電池が知られている。その中でも半導体シリコ
ンのｐｎ接合を用いた太陽電池はよく知られており、す
でに微弱電力消費の分野や独立電源さらには宇宙用電源
として利用されている。しかしながら、シリコン太陽電
池は理論効率が低く、しかも必ず変換効率が劣化すると
いう問題がある。また、シリコン単結晶はもちろんアモ
ルファスシリコンも製造するにあっては多大なエネルギ
ーを必要とするので、電池を作るのに費やしたエネルギ
ーを回収するには、数十年という長期間にわたって発電
を続ける必要がある。2. Description of the Related Art Conventionally, as a method of directly converting light energy into electric energy, a photochemical cell using a silicon semiconductor or a dye is known. Among them, solar cells using a pn junction of semiconductor silicon are well known, and have already been used in the field of weak power consumption, as an independent power supply, and as a space power supply. However, the silicon solar cell has a problem that the theoretical efficiency is low and the conversion efficiency always deteriorates. In addition, since the production of amorphous silicon as well as silicon single crystal requires a great deal of energy, it is necessary to continue power generation for several decades in order to recover the energy used to make batteries. There is.

【０００３】また、古くから半導体電極を色素増感した
光化学電池について研究されてきたが、最近半導体電極
の表面積を大きくして多量の色素を吸着させ、利用効率
を飛躍的に高くすることができるようになった。図２は
従来の湿式太陽電池の概略断面図である。この太陽電池
は、透明基板の一方の面に形成された透明導電膜と、導
電基板の一方の面に形成された色素増感半導体電極とを
内側にした状態で、スペーサを介して接合してなり、ス
ペーサによって形成された空隙にはヨウ素電解溶液が封
入されている。Although photochemical cells in which a semiconductor electrode is dye-sensitized have been studied for a long time, recently, the surface area of the semiconductor electrode has been increased to allow a large amount of dye to be adsorbed, and the utilization efficiency can be drastically increased. It became so. FIG. 2 is a schematic sectional view of a conventional wet solar cell. In this solar cell, the transparent conductive film formed on one surface of the transparent substrate and the dye-sensitized semiconductor electrode formed on one surface of the conductive substrate are inwardly bonded with a spacer interposed therebetween. The iodine electrolytic solution is sealed in the gap formed by the spacer.

【０００４】このような太陽電池の設置場所は、その用
途から屋外に設置される可能性が高い。There is a high possibility that such a solar cell is installed outdoors because of its use.

【０００５】[0005]

【発明が解決しようとする課題】しかしながら、湿式太
陽電池を屋外に設置すると、風雨や空気中に含まれる油
などによりガラスの表面が汚れその結果光の透過性が減
少し、電流が低下してしまう。これを防ぐためには定期
的にガラスを拭く等のメンテナンスが必要となるが設置
場所やその労力を考えると、このような作業は危険であ
り、非常に大変である。However, when a wet type solar cell is installed outdoors, the surface of the glass is contaminated by wind and rain or oil contained in the air, and as a result, the light transmittance is reduced and the current is reduced. I will. In order to prevent this, maintenance such as periodically wiping the glass is required. However, considering the installation location and the labor, such work is dangerous and very difficult.

【０００６】また、湿式太陽電池にワイパ−等を装着す
ることも可能であるが、装置が大きくなる、及びコスト
が高くなるという不利益がある。そこで、本発明は、こ
のような問題点に鑑みて、安価で、簡単な構成により外
因による電流の低下を防止することが可能な湿式太陽電
池を提供することを目的とする。Although it is possible to mount a wiper or the like on a wet-type solar cell, there are disadvantages in that the device becomes large and the cost increases. In view of such problems, an object of the present invention is to provide a wet-type solar cell that is inexpensive and can prevent a decrease in current due to an external factor with a simple configuration.

【０００７】[0007]

【課題を解決するための手段】本発明者は鋭意研究の結
果、セルフクリーニング機能を有する光触媒に着目し
て、本発明をするに至った。本発明は第一に「一方の面
に透明導電膜が形成された透明基板と、該透明基板と対
極をなす色素を担持させた半導体電極が形成された導電
性基板との間に電解質を有し、光電変換によって前記透
明導電膜と前記導電性基板との間に電気エネルギーを発
生する湿式太陽電池において、前記透明基板の他方の面
に光触媒膜を形成したことを特徴とする湿式太陽電池
（請求項１）」を提供する。Means for Solving the Problems As a result of diligent research, the present inventors have focused on a photocatalyst having a self-cleaning function and completed the present invention. The present invention firstly provides an "electrolyte between a transparent substrate on which a transparent conductive film is formed on one surface and a conductive substrate on which a semiconductor electrode supporting a dye which is a counter electrode to the transparent substrate is formed. A wet-type solar cell that generates electric energy between the transparent conductive film and the conductive substrate by photoelectric conversion, wherein a photocatalytic film is formed on the other surface of the transparent substrate ( Claim 1) "is provided.

【０００８】また、本発明は第二に「前記光触媒膜が酸
化チタン膜であることを特徴とする請求項１記載の湿式
太陽電池（請求項２）」を提供する。The present invention secondly provides a "wet solar cell according to claim 1 wherein the photocatalytic film is a titanium oxide film (claim 2)".

【０００９】[0009]

【発明の実施形態】以下、本発明の実施形態としての湿
式太陽電池を図面を参照しながら説明する。 図１は、
本発明の実施形態の湿式太陽電池の概略断面図である。
一方の面に透明導電膜が形成され、他方の面に光触媒膜
が形成された透明基板の透明導電膜と、導電基板の一方
の面に形成された色素増感半導体電極とを内側にした状
態で、スペーサを介して接合してなり、スペーサによっ
て形成された空隙にはヨウ素電解溶液が封入されてい
る。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A wet solar cell as an embodiment of the present invention will be described below with reference to the drawings. FIG.
BRIEF DESCRIPTION OF THE DRAWINGS It is a schematic sectional drawing of the wet-type solar cell of embodiment of this invention.
A transparent conductive film of a transparent substrate having a transparent conductive film formed on one surface and a photocatalytic film formed on the other surface, and a dye-sensitized semiconductor electrode formed on one surface of the conductive substrate, inside. Thus, an iodine electrolytic solution is sealed in the gap formed by the spacer.

【００１０】実施形態の湿式太陽電池は、光触媒膜をコ
ーティングした導電性ガラス（一方の面に透明導電膜が
形成されたガラス）を電極材料として用いたので、従来
の湿式太陽電池には無かったセルフクリーニング機能を
有する。即ち、光触媒膜はバンドギャップ以上のエネル
ギーを吸収すると電子が励起され、ホール、エレクトロ
ンが生じる。In the wet solar cell of the embodiment, since a conductive glass coated with a photocatalytic film (glass having a transparent conductive film formed on one surface) is used as an electrode material, the wet solar cell is not provided in a conventional wet solar cell. Has a self-cleaning function. That is, when the photocatalytic film absorbs energy equal to or greater than the band gap, electrons are excited, and holes and electrons are generated.

【００１１】このうち、ホールの酸化力は強く、有機物
を分解することができる。光触媒のうち酸化チタンは、
その励起波長が近紫外域にあり、太陽光でも十分に励起
される、という観点から有用である。酸化チタンには、
アナターゼ、ルチル、ブルッカイトの３種類の結晶系が
あるが、光触媒としての機能は、アナターゼがより優れ
ている。Of these, holes have a strong oxidizing power and can decompose organic substances. Among the photocatalysts, titanium oxide is
It is useful from the viewpoint that its excitation wavelength is in the near ultraviolet region and is sufficiently excited even by sunlight. For titanium oxide,
Although there are three types of crystal systems, anatase, rutile, and brookite, anatase has a better function as a photocatalyst.

【００１２】このような理由から、光触媒膜をコーティ
ングした導電性ガラスを電極材料として用いることによ
り、汚れの原因となる有機物がガラス表面に付着して
も、太陽光により光触媒が励起されて生ずるホールの強
力な酸化力によって、有機物を分解、除去し、元の清浄
な表面を保つことができ、汚れのような外因による電流
の低下を防ぐことが可能である。For this reason, by using a conductive glass coated with a photocatalyst film as an electrode material, even if an organic substance causing contamination adheres to the glass surface, holes generated by excitation of the photocatalyst by sunlight are generated. Due to the strong oxidizing power of, organic substances can be decomposed and removed, the original clean surface can be maintained, and a decrease in current due to external factors such as dirt can be prevented.

【００１３】以下、実施形態の湿式太陽電池の製造方法
を説明する。まず、一方の面にＩＴＯが形成されたガラ
スを用意し、他方の面に光触媒膜を形成する。その形成
方法としては、均一な膜を形成できれば、ディッピング
法、スピン法、塗布法等のいずれの方法も用いられる。
次に、金属基板を用意し、その一方の面に金属酸化膜を
形成する。その形成方法としては、陽極酸化法、コロイ
ド溶液等を塗布する方法のいずれの方法も用いられる。Hereinafter, a method of manufacturing the wet solar cell according to the embodiment will be described. First, a glass having ITO formed on one surface is prepared, and a photocatalytic film is formed on the other surface. As a forming method, any method such as a dipping method, a spin method, and a coating method can be used as long as a uniform film can be formed.
Next, a metal substrate is prepared, and a metal oxide film is formed on one surface thereof. As a forming method, any of anodizing method and a method of applying a colloid solution or the like is used.

【００１４】陽極酸化法により陽極酸化膜を形成する方
法では、金属基板をグリセロリン酸塩とアルカリ土類金
属の酢酸塩からなる電解溶液中で陽極酸化し、リンとア
ルカリ土類金属を含む陽極酸化膜を形成する。次に蒸留
水で加熱する水熱処理を行い、陽極酸化膜からアルカリ
土類金属とリンを溶出させ、表面に非常に微細な細孔を
形成する。詳細は、特願平８−３２９９６８号に記載さ
れている。In the method of forming an anodic oxide film by an anodic oxidation method, a metal substrate is anodically oxidized in an electrolytic solution comprising glycerophosphate and an acetate of an alkaline earth metal to form an anodic oxide containing phosphorus and an alkaline earth metal. Form a film. Next, a hydrothermal treatment by heating with distilled water is performed to elute the alkaline earth metal and phosphorus from the anodic oxide film, thereby forming very fine pores on the surface. The details are described in Japanese Patent Application No. 8-329968.

【００１５】コロイド溶液を塗布する方法により酸化膜
を形成する方法では、金属基板に酸化物微粒子と少量の
有機高分子を含有するコロイド溶液を塗布し、乾燥さ
せ、その後、約５００℃で加熱処理をして有機高分子を
揮発させて、表面に微細な細孔を形成する。このように
して形成した多孔質の金属酸化膜を増感色素の溶液に浸
漬し、加熱処理して、その表面に増感色素を吸着させ、
色素増感半導体電極を形成する。In the method of forming an oxide film by applying a colloidal solution, a colloidal solution containing fine oxide particles and a small amount of an organic polymer is applied to a metal substrate, dried, and then heat-treated at about 500 ° C. To volatilize the organic polymer to form fine pores on the surface. The porous metal oxide film thus formed is immersed in a solution of a sensitizing dye, heat-treated, and the sensitizing dye is adsorbed on its surface,
A dye-sensitized semiconductor electrode is formed.

【００１６】金属基板に形成された色素増感半導体電極
と、ガラスの一方の面に形成された透明導電膜とを向か
い合わせてスペーサを介して接合し、スペーサによって
形成された空隙に電解溶液を注入したあと、電解質の溶
媒に溶解しにくい樹脂を周囲に塗って封止する。A dye-sensitized semiconductor electrode formed on a metal substrate and a transparent conductive film formed on one surface of glass are joined to each other via a spacer, and an electrolytic solution is filled in a gap formed by the spacer. After the injection, a resin that is difficult to dissolve in the solvent of the electrolyte is applied around and sealed.

【００１７】[0017]

【実施例】［実施例１］本発明にかかる湿式太陽電池を
以下の様な方法手順で製作した。まず、大きさ５×５ｃ
ｍ、厚さ１ｍｍのガラスの一方の面に形成されたＩＴＯ
をマスキング剤によりマスキングして、他方の面のディ
ッピング法により酸化チタン膜を形成した。EXAMPLES Example 1 A wet solar cell according to the present invention was manufactured by the following method. First, size 5x5c
m, ITO formed on one surface of glass 1 mm thick
Was masked with a masking agent to form a titanium oxide film by dipping on the other surface.

【００１８】ディッピング液は酸化チタンコーティング
溶液（商品名：ＳＴ−Ｋ０３（石原産業製））を８倍に
希釈したものを用いた。ディッピイングは基板をディッ
ピング液に浸した後、１００〜２００ｍｍ／ｍｉｎで引
き上げ、風乾後、マスキング剤を剥がして、空気中、５
００℃で３０分間焼成した。As the dipping solution, a solution prepared by diluting a titanium oxide coating solution (trade name: ST-K03, manufactured by Ishihara Sangyo) eight-fold was used. Dipping is performed by dipping the substrate in a dipping solution, pulling it up at 100 to 200 mm / min, air-drying, peeling off the masking agent, and removing
Baking was performed at 00 ° C. for 30 minutes.

【００１９】大きさが５×５ｃｍ、厚さ１ｍｍのチタン
基板を用意し、一方の面をマスキング剤によってマスキ
ングし、濃度が０．０７ｍｏｌ／ｌのβ-グリセロリン
酸ナトリウムと０．０５ｍｏｌ／ｌの酢酸ストロンチウ
ムからなる電解質水溶液中で、チタン基板表面を４００
Ｖまで陽極酸化することによって、他方の面に酸化チタ
ン皮膜を形成した。電解質温度は４０℃、電流密度は５
０ｍＡ／ｃｍ2に設定した。A titanium substrate having a size of 5 × 5 cm and a thickness of 1 mm was prepared, and one surface was masked with a masking agent. A concentration of 0.07 mol / l sodium β-glycerophosphate and 0.05 mol / l sodium were used. In an aqueous electrolyte solution of strontium acetate, the surface of the titanium substrate was
By anodizing to V, a titanium oxide film was formed on the other surface. The electrolyte temperature is 40 ° C and the current density is 5
It was set to 0 mA / cm 2 .

【００２０】次に、マスキング剤を剥がした後、陽極酸
化されたチタンをオ−トクレ−ブを用いて、高圧水中１
２０℃で２日間加熱処理して、陽極酸化膜に含まれてい
たストロンチウムとリンを溶出させることによって微細
な細孔を形成し、皮膜を多孔質にした。この皮膜は、粒
径が約２０ｎｍの酸化チタン微粒子から構成されてい
た。Next, after the masking agent is peeled off, the anodized titanium is removed by using an autoclave in high-pressure water for 1 hour.
Heat treatment was performed at 20 ° C. for 2 days to elute strontium and phosphorus contained in the anodic oxide film, thereby forming fine pores and making the film porous. This film was composed of titanium oxide fine particles having a particle size of about 20 nm.

【００２１】次に、大気中５００℃で３０分間加熱処理
し、１００℃まで温度が下がったら、ただちにルテニウ
ム錯体のエタノ−ル溶液に浸漬し、エタノール沸点であ
る８０℃で1時間還流した。その結果、皮膜を構成する
酸化チタン微粒子上に、増感色素であるルテニウム錯体
が吸着、コ−ティングされ、色素増感半導体電極が作製
された。Next, a heat treatment was carried out in the atmosphere at 500 ° C. for 30 minutes, and when the temperature was lowered to 100 ° C., it was immediately immersed in an ethanol solution of a ruthenium complex and refluxed at 80 ° C., which is the boiling point of ethanol, for 1 hour. As a result, a ruthenium complex as a sensitizing dye was adsorbed and coated on the titanium oxide fine particles constituting the film, and a dye-sensitized semiconductor electrode was produced.

【００２２】チタン基板に形成された色素増感半導体電
極と、ガラスの一方の面に形成されたＩＴＯを向かい合
わせてスペーサを介して接合し、スペーサによって形成
された空隙に電解溶液を注入したあと、電解質の溶媒に
溶解しにくい樹脂を周囲に塗って封止した。従って、こ
の様にして製作した太陽電池は、ガラスの他方の面に形
成した酸化チタン皮膜が大気中に曝され、太陽光に照ら
され光触媒としての役割を果たすこととなる。The dye-sensitized semiconductor electrode formed on the titanium substrate and the ITO formed on one surface of the glass are joined to each other via a spacer, and the electrolytic solution is injected into the void formed by the spacer. Then, a resin hardly soluble in the solvent of the electrolyte was applied to the periphery and sealed. Therefore, in the solar cell manufactured in this manner, the titanium oxide film formed on the other surface of the glass is exposed to the atmosphere, and is illuminated by sunlight to serve as a photocatalyst.

【００２３】実施例１で製作した湿式太陽電池を屋外に
設置して、３ケ月間使用した。３ケ月後、湿式太陽電池の
電流値を測定したところ、電流値は１０ｍＡ／ｃｍ2で
あった。 ［比較例１］比較例１の湿式太陽電池は、一方の面にＩ
ＴＯが形成されたガラスの他方の面に酸化チタン膜を形
成する工程を除いた以外は、実施例１で製作した湿式太
陽電池と同様の製造工程で製作した。The wet solar cell manufactured in Example 1 was installed outdoors and used for three months. Three months later, when the current value of the wet solar cell was measured, the current value was 10 mA / cm 2 . Comparative Example 1 The wet solar cell of Comparative Example 1 has an I
The solar cell was manufactured in the same manner as in the wet solar cell manufactured in Example 1, except that a step of forming a titanium oxide film on the other surface of the glass on which TO was formed was omitted.

【００２４】比較例１で製作した湿式太陽電池を屋外に
設置して、３ケ月間使用した。３ケ月後、湿式太陽電池の
電流値を測定したところ、電流値は７ｍＡ／ｃｍ2であ
った。この様な条件で使用した結果、比較例１で製作し
た湿式太陽電池の電流値が実施例１で製作した湿式太陽
電池の電流値に比べて低いのは、ガラス表面の汚れによ
り、透過率が低下したためと考えられる。The wet solar cell manufactured in Comparative Example 1 was installed outdoors and used for three months. Three months later, when the current value of the wet solar cell was measured, the current value was 7 mA / cm 2 . As a result of the use under such conditions, the current value of the wet solar cell manufactured in Comparative Example 1 is lower than the current value of the wet solar cell manufactured in Example 1 because the transmittance on the glass surface is reduced due to contamination on the glass surface. It is thought that it decreased.

【００２５】つまり、光触媒膜をコーティングした導電
性ガラスを電極材料として用いれば、ガラス表面がセル
フクリーニングされて、表面の汚れを自然に除去するこ
とができ、その結果汚れによる光の透過率の減少が抑制
でき、ひいては電流値の低下を抑えることができると考
えられる。That is, if the conductive glass coated with the photocatalytic film is used as an electrode material, the glass surface is self-cleaned, and the stain on the surface can be naturally removed, and as a result, the light transmittance due to the stain is reduced. It can be considered that this can suppress the decrease in the current value.

【００２６】[0026]

【発明の効果】以上説明した通り、本発明にかかる湿式
太陽電池は、光触媒膜をコーティングした導電性ガラス
を電極材料として用いたので、使用時にガラス表面はセ
ルフクリーニングされ、その結果光の透過率の低下に伴
う起電力の低下を抑えることができる。As described above, in the wet solar cell according to the present invention, since the conductive glass coated with the photocatalytic film is used as the electrode material, the glass surface is self-cleaned at the time of use, and as a result, the light transmittance is obtained. Can be suppressed from lowering of the electromotive force due to the lowering of the electromotive force.

【図面の簡単な説明】[Brief description of the drawings]

【図１】本発明にかかる湿式太陽電池の概略断面図であ
る。FIG. 1 is a schematic sectional view of a wet solar cell according to the present invention.

【図２】従来の湿式太陽電池の概略断面図である。FIG. 2 is a schematic sectional view of a conventional wet solar cell.

【符号の説明】[Explanation of symbols]

１・・・光触媒膜 ２・・・透明基板 ３・・・透明導電膜 ４・・・電解液膜 ５・・・色素増感半導体膜 ６・・・金属基板 DESCRIPTION OF SYMBOLS 1 ... Photocatalyst film 2 ... Transparent substrate 3 ... Transparent conductive film 4 ... Electrolyte solution film 5 ... Dye-sensitized semiconductor film 6 ... Metal substrate

───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 ＦＩ // Ｂ０１Ｊ 21/06 Ｈ０１Ｌ 31/04 Ｄ 35/02 ──────────────────────────────────────────────────の Continued on front page (51) Int.Cl. 6 Identification code FI // B01J 21/06 H01L 31/04 D 35/02

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】一方の面に透明導電膜が形成された透明基
板と、該透明基板と対極をなす色素を担持させた半導体
電極が形成された導電性基板との間に電解質を有し、光
電変換によって前記透明導電膜と前記導電性基板との間
に電気エネルギーを発生する湿式太陽電池において、 前記透明基板の他方の面に光触媒膜を形成したことを特
徴とする湿式太陽電池。An electrolyte is provided between a transparent substrate on which a transparent conductive film is formed on one surface and a conductive substrate on which a semiconductor electrode supporting a dye, which is a counter electrode to the transparent substrate, is formed. A wet type solar cell which generates electric energy between the transparent conductive film and the conductive substrate by photoelectric conversion, wherein a photocatalytic film is formed on the other surface of the transparent substrate. 【請求項２】前記光触媒膜が酸化チタン膜であることを
特徴とする請求項１記載の湿式太陽電池。2. The wet solar cell according to claim 1, wherein said photocatalytic film is a titanium oxide film.
JP10045464A 1998-02-26 1998-02-26 Wet solar cell Pending JPH11250944A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10045464A JPH11250944A (en) 1998-02-26 1998-02-26 Wet solar cell

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10045464A JPH11250944A (en) 1998-02-26 1998-02-26 Wet solar cell

Publications (1)

Publication Number Publication Date
JPH11250944A true JPH11250944A (en) 1999-09-17

Family

ID=12720103

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10045464A Pending JPH11250944A (en) 1998-02-26 1998-02-26 Wet solar cell

Country Status (1)

Country Link
JP (1) JPH11250944A (en)

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KR100537126B1 (en) * 1999-09-24 2005-12-16 가부시끼가이샤 도시바 Photosensitized Type Solar Cells and Manufacturing Process Thereof
WO2010050575A1 (en) 2008-10-29 2010-05-06 富士フイルム株式会社 Dye, photoelectric conversion element and photoelectrochemical cell each comprising the dye, and process for producing dye
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WO2011118581A1 (en) 2010-03-24 2011-09-29 富士フイルム株式会社 Method for manufacturing photoelectric conversion element, photoelectric conversion element and photoelectrochemical cell
WO2012132855A1 (en) 2011-03-30 2012-10-04 富士フイルム株式会社 Photoelectric converter and photoelectrochemical cell
WO2014129575A1 (en) 2013-02-22 2014-08-28 富士フイルム株式会社 Photoelectric conversion element, method for manufacturing photoelectric conversion element and dye-sensitized solar cell
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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100537126B1 (en) * 1999-09-24 2005-12-16 가부시끼가이샤 도시바 Photosensitized Type Solar Cells and Manufacturing Process Thereof
WO2010050575A1 (en) 2008-10-29 2010-05-06 富士フイルム株式会社 Dye, photoelectric conversion element and photoelectrochemical cell each comprising the dye, and process for producing dye
EP2845882A2 (en) 2008-10-29 2015-03-11 Fujifilm Corporation Dye, Photoelectric Conversion Element and Photoelectrochemical Cell
EP2302650A2 (en) 2009-09-28 2011-03-30 Fujifilm Corporation Method of producing photoelectric conversion element, photoelectric conversion element, and photoelectrochemical cell
EP2306479A2 (en) 2009-09-28 2011-04-06 Fujifilm Corporation Method of producing photoelectric conversion element, photoelectric conversion element, and photoelectrochemical cell
WO2011118581A1 (en) 2010-03-24 2011-09-29 富士フイルム株式会社 Method for manufacturing photoelectric conversion element, photoelectric conversion element and photoelectrochemical cell
WO2012132855A1 (en) 2011-03-30 2012-10-04 富士フイルム株式会社 Photoelectric converter and photoelectrochemical cell
WO2014129575A1 (en) 2013-02-22 2014-08-28 富士フイルム株式会社 Photoelectric conversion element, method for manufacturing photoelectric conversion element and dye-sensitized solar cell
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