染料感受性太陽電池における光誘導吸収に対する局所電場の影響
Ute B Cappel1, Sandra M Feldt, Jan Schöneboom
1Department of Physical and Analytical Chemistry, Angström laboratory, Uppsala University, Box 259, 751 05 Uppsala, Sweden.
Journal of the American Chemical Society
|June 18, 2010
まとめ
染料感受性太陽電池 (DSC) の一時吸収スペクトロスコピーは,説明できない特徴を明らかにしています. この研究はこれを,局所電場の変化が染料吸収スペクトルに影響を与えるスターク効果と説明している.
科学分野:
- フォトボルトイカは,太陽光発電の
- スペクトル顕微鏡検査です.
- マテリアルサイエンス 材料科学
背景:
- 染料感受性太陽電池 (DSC) は,従来の太陽光発電の低コストで柔軟な代替案を提供します.
- 暫定吸収スペクトロスコピーは,DSCメカニズムを理解する上で極めて重要です.
- 説明がつかない基底状態の漂白は,しばしばDSCの一時的な吸収スペクトルで観察されます.
研究 の 目的:
- DSCの一時的な吸収スペクトルにおける説明不能な地面状態の漂白剤の起源を調査する.
- 染料の吸収に局所的な電場が及ぼす影響を実証する.
- DSCのスペクトル測定データに関する既存の解釈に異議を唱える.
主な方法:
- TiO(2) 基板のモノレイヤを染色するために電場を適用した.
- 制御された電場下で染料吸収スペクトルの変化を測定した.
- DSCsからの光誘導吸収スペクトルと実験室での発見を比較した.
主要な成果:
- 観測されたスペクトルの特徴は,局所的な電場変化によって引き起こされるスターク効果に起因する.
- 適用されたフィールドの下で測定されたスペクトルは,最初の派生形を示します.
- 動作中のDSCでも同様のスペクトル変化が観察され,電場調節が確認されました.
結論:
- スターク効果は,DSCの染料吸収に大きく影響する.
- DSCにおける一時的な吸収スペクトルの既存の解釈は,改定する必要があるかもしれません.
- この発見は,分子光電子機器の分析に影響を与えます.
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