JP5614272B2 - 光電変換素子および色素増感型太陽電池 - Google Patents
光電変換素子および色素増感型太陽電池 Download PDFInfo
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- JP5614272B2 JP5614272B2 JP2010284220A JP2010284220A JP5614272B2 JP 5614272 B2 JP5614272 B2 JP 5614272B2 JP 2010284220 A JP2010284220 A JP 2010284220A JP 2010284220 A JP2010284220 A JP 2010284220A JP 5614272 B2 JP5614272 B2 JP 5614272B2
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- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910001936 tantalum oxide Inorganic materials 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- 125000001544 thienyl group Chemical group 0.000 description 1
- 125000005309 thioalkoxy group Chemical group 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
- 150000003577 thiophenes Chemical class 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- YONPGGFAJWQGJC-UHFFFAOYSA-K titanium(iii) chloride Chemical compound Cl[Ti](Cl)Cl YONPGGFAJWQGJC-UHFFFAOYSA-K 0.000 description 1
- 239000012780 transparent material Substances 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 125000004306 triazinyl group Chemical group 0.000 description 1
- 125000002889 tridecyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000002023 trifluoromethyl group Chemical group FC(F)(F)* 0.000 description 1
- 125000004385 trihaloalkyl group Chemical group 0.000 description 1
- 125000000025 triisopropylsilyl group Chemical group C(C)(C)[Si](C(C)C)(C(C)C)* 0.000 description 1
- 239000013638 trimer Substances 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000006617 triphenylamine group Chemical group 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 229910001935 vanadium oxide Inorganic materials 0.000 description 1
- 229920006163 vinyl copolymer Polymers 0.000 description 1
- KAKZBPTYRLMSJV-UHFFFAOYSA-N vinyl-ethylene Natural products C=CC=C KAKZBPTYRLMSJV-UHFFFAOYSA-N 0.000 description 1
- 239000004034 viscosity adjusting agent Substances 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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
- H01G9/2059—Light-sensitive devices comprising an organic dye as the active light absorbing material, e.g. adsorbed on an electrode or dissolved in solution
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Materials Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Photovoltaic Devices (AREA)
- Hybrid Cells (AREA)
Description
を含有し、
前記色素が、イミダゾロン骨格を有する色素であることを特徴とする光電変換素子。
本発明の光電変換素子について、図1により説明する。図1は、光電変換素子の一例を示す模式断面図である。
一般式(1)において、X、Y、Zは、水素原子または置換基を表し、X、Y、およびZの少なくとも1つは、電子吸引性基を表す。
1.半導体層の形成後、電解液に一般式(1)で表される化合物を混合し、電解液とともに光電変換素子を作製する。
2.半導体からなる層を形成後、色素吸着前に一般式(1)で表される化合物を含んだ溶液に浸漬させ吸着、その後色素吸着氏、ついで電荷輸送層形成する。
3.色素吸着後に一般式(1)で表される化合物を含んだ溶液に浸漬させ吸着、次いで電荷輸送層形成する。
4.電荷輸送層作製後に一般式(1)で表される化合物を含んだ溶液に浸漬させ吸着させる。
(半導体)
半導体層に用いられる半導体としては、シリコン、ゲルマニウムのような単体、周期表(元素周期表ともいう)の第3族〜第5族、第13族〜第15族系の元素を有する化合物、金属のカルコゲニド(例えば、酸化物、硫化物、セレン化物等)、金属窒化物等を使用することができる。
半導体層の作製方法について説明する。半導体層の半導体が粒子状の場合には、半導体を導電性支持体に塗布あるいは吹き付けて、半導体層を作製するのがよい。また、本発明に係る半導体が膜状であって、導電性支持体上に保持されていない場合には、半導体を導電性支持体上に貼合して半導体層を作製することが好ましい。
まず、半導体の微粉末を含む塗布液を調製する。この半導体微粉末はその1次粒子径が微細な程好ましく、その1次粒子径は1〜5000nmが好ましく、さらに好ましくは2〜100nmである。半導体微粉末を含む塗布液は、半導体微粉末を溶媒中に分散させることによって調製することができる。
上記のようにして得られた半導体微粉末含有塗布液を、導電性支持体上に塗布または吹き付け、乾燥等を行った後、空気中または不活性ガス中で焼成して、導電性支持体上に半導体層(半導体膜とも言う)が形成される。
本発明に係る色素は、下述するような半導体の増感処理により、半導体に担持されており、光照射時、光励起され起電力を生じ得るものである。色素が半導体に担持されている態様としては、半導体表面へ吸着されている態様、また半導体が多孔質等のポーラスな構造を有する場合には、半導体の多孔質構造に色素が充填されている態様が挙げられる。
(半導体の増感処理)
半導体層1m2当たりの色素の総担持量は0.01〜100ミリモルの範囲が好ましく、さらに好ましくは0.1〜50ミリモルであり、特に好ましくは0.5〜20ミリモルである。
半導体を焼成した基板を増感色素を含む溶液に浸漬する時間は、半導体層(半導体膜)に深く進入して吸着等を充分に進行させ、半導体を十分に増感させることが好ましい。
電荷輸送層は、光吸収して電子を半導体に注入した後の色素の酸化体を還元し、色素との界面で注入された電荷を第二電極に輸送する機能を担う層である。
基板は、光入射方向の側に設けられ、光電変換素子の光電変換効率の観点から、光透過率が10%以上であることが好ましく、更に好ましくは50%以上であり、特に80%〜100%であることが好ましい。
第一電極は、基板と光電変換層との間に配置される。
本発明の光電変換素子は、短絡防止手段として、膜状(層状)をなし、第一電極と半導体層との間に位置するバリヤ層を有することが好ましい。
第二電極は導電性を有するものであればよく、任意の導電性材料が用いられる。
本発明の色素増感型太陽電池は、上記本発明の光電変換素子を有する。
二酸化チタンペースト(アナターゼ型、1次平均粒径(顕微鏡観察平均)18nm、ポリエチレングリコール分散)を、フッ素ドープ酸化スズ(FTO、第一の電極)導電性ガラス基板へスクリーン印刷法(塗布面積5×5mm2)により塗布した。塗布及び乾燥(120℃で3分間)を3回繰り返し、200℃で10分間及び500℃で15分間焼成を行い、厚さ5μmの二酸化チタン薄膜を得た。
光電変換素子1の作製において、表1に示す、色素、一般式(1)で表される化合物または比較化合物を用いた他は、光電変換素子1の作製と同様にして、光電変換素子2〜42を作製した。
上記光電変換素子1〜42を、太陽電池1〜42として、以下の評価を行った。
(Jsc(mA・cm−2)=Isc(mA)/酸化物半導体層表面積(cm2))
ここで、Pは入射光強度[mW・cm−2]、Vocは開放電圧[V]、Jscは短絡電流密度[mA・cm−2]、F.F.は形状因子を示す。
2 第一電極
3 バリヤ層
4 光電変換層
5 半導体層
6 電荷輸送層
8 第二電極
10 光電変換素子
Claims (4)
- 基板、第一電極、色素および半導体を含有する半導体層と電荷輸送層とを有する光電変換層並びに第二電極をこの順に有する光電変換素子であって、該光電変換層が下記一般式(1)で表される化合物:
を含有し、
前記色素が、イミダゾロン骨格を有する色素であることを特徴とする光電変換素子。 - 前記電子吸引性基が、ヨード基、シアノ基、COR3、COOR4またはCONR5R6(R3、R4、R5およびR6は、置換基を有してもよいアルキル基を表す。)であることを特徴とする請求項1に記載の光電変換素子。
- 前記半導体が酸化チタンであることを特徴とする請求項1または2に記載の光電変換素子。
- 請求項1から3のいずれか1項に記載の光電変換素子を具備することを特徴とする色素増感型太陽電池。
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JP2010277991A (ja) * | 2009-04-28 | 2010-12-09 | Konica Minolta Business Technologies Inc | 光電変換素子及び太陽電池 |
US9959982B2 (en) | 2012-09-24 | 2018-05-01 | Konica Minolta, Inc. | Photoelectric conversion element and method for producing the same |
US20160155574A1 (en) * | 2013-07-01 | 2016-06-02 | Konica Minolta, Inc. | Photoelectric conversion element module and method for manufacturing the same |
JP2015053149A (ja) * | 2013-09-05 | 2015-03-19 | 富士フイルム株式会社 | 光電変換素子、色素増感太陽電池および光電変換素子用逆電子移動防止剤 |
JP6270990B2 (ja) * | 2014-04-15 | 2018-01-31 | シャープ株式会社 | 光電変換素子、色素増感太陽電池および色素増感太陽電池モジュール |
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JP2000090991A (ja) * | 1998-09-09 | 2000-03-31 | Fuji Photo Film Co Ltd | 光電気化学電池 |
JP2000100485A (ja) * | 1998-09-22 | 2000-04-07 | Fuji Photo Film Co Ltd | 電解質および光電気化学電池 |
JP4019140B2 (ja) | 2002-07-10 | 2007-12-12 | 独立行政法人産業技術総合研究所 | アミノピリジン系化合物を含む電解質溶液を用いた光電変換素子及びそれを用いた色素増感型太陽電池 |
JP2004146664A (ja) * | 2002-10-25 | 2004-05-20 | Seiko Epson Corp | 光電変換素子 |
JP4583025B2 (ja) * | 2003-12-18 | 2010-11-17 | Jx日鉱日石エネルギー株式会社 | ナノアレイ電極の製造方法およびそれを用いた光電変換素子 |
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