電子輸送と再結合は固体染料の太陽電池で,穴導体としてスパイロ-OMeTADを使用しています
Francisco Fabregat-Santiago1, Juan Bisquert, Le Cevey
1Photovoltaics and Optoelectronic Devices Group, Departament de Fisica, Universitat Jaume I, 12071 Castello, Spain. fran.fabregat@fca.uji.es
Journal of the American Chemical Society
|January 15, 2009
まとめ
固体染料感受性太陽電池 (SDSC) の電子輸送は,液体電解質装置に似ています. しかし,SDSCにおけるより高い再結合率は効率を制限し,TiO ((2)) 電子輸送とスパイロ-OMeTAD抵抗が異なる電位での性能に影響する.
科学分野:
- マテリアルサイエンス 材料科学
- 電気化学 電気化学について
- 再生可能エネルギーの再生可能エネルギー
背景:
- 固体染料感受性太陽電池 (SDSC) は,液体電解質を使用した伝統的な染料感受性太陽電池 (DSC) よりも潜在的な利点があります.
- Spiro-OMeTADは,高性能SDSCで一般的な穴導体である.
- 充電輸送と再結合メカニズムの理解は,SDSCの効率を改善するために不可欠です.
研究 の 目的:
- スパイロ-OMeTADを搭載したTiO(2) ベースのSDSCの電子輸送機構を,高性能液体電解質DSCの電子輸送機構と比較して調査する.
- 固体染料感受性太陽電池の効率を制限する重要な要因を特定する.
主な方法:
- 阻力スペクトロスコピーを用いて,様々な暗黒の安定状態条件下での電荷輸送および再結合パラメータを分析する.
- 固体電解質と液体電解質の太陽電池構成の性能指標を比較する.
主要な成果:
- スパイロ-OMeTADを搭載したTiO(2) SDSCの電子輸送機構は,高性能液体電解質のDSCに匹敵する.
- 固体器具は,効率の主要な制限である,著しく高い再結合率を示します.
- TiO(2) の電子輸送は低電位での性能を制限し,スパイロ-OMeTADの抵抗は高電位での充填因子と効率に影響する.
結論:
- SDSCにおける再結合損失は,より低い穴のフェルミレベルからの潜在的な光電力の増益を相殺する.
- 充電輸送の最適化とTiO2とスパイロ-OMeTAD層の両方の再結合の最小化は,SDSC技術の進歩に不可欠です.
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