有機薄膜太陽電池におけるドナー・アクセプター界面近傍での光励起キャリア挙動

カテゴリ: 論文誌(論文単位)

グループ名: 【C】電子・情報・システム部門

発行日: 2012/08/01

タイトル(英語): Photo-generated Carrier Dynamics in the Vicinity of the Donor/acceptor Interface of Organic Solar Cells

著者名: 龍崎　奏（東京工業大学 原子炉工学研究所），尾上　順（東京工業大学 原子炉工学研究所）

著者名(英語): Sou Ryuzaki (Tokyo Institute of Technology), Jun Onoe (Tokyo Institute of Technology)

キーワード: 有機薄膜太陽電池，インピーダンス分光法，内蔵電位，開放電圧　　organic solar cells，impedance spectroscopy，built-in potential，open-circuit voltage

要約(英語): Change in electronic states before and after photo-irradiation at a Donor/Accepter (D/A) interface in organic solar cells consisting of Zinc-porphyrin and fullerene films has been examined using in situ impedance spectroscopy (IS), which makes it possible to non-destructively measure a built-in potential (Vbi) of both D and A films at the D/A interface. Charge accumulation of photo-generated carriers in the vicinity of the D/A interface was found to enlarge the Vbi of both D [Zn(OEP)] and A [C60] films at the interface. In addition, it was noted that the sum of Vbi upon photo-irradiation was in good agreement with the open-circuit voltage (Voc), the origin of which has still remained unsolved for organic solar cells. It was thus found that charge accumulation of photo-generated carriers in the vicinity of the D/A interface plays a key role in determining Voc.

本誌: 電気学会論文誌C（電子・情報・システム部門誌） Vol.132 No.8 （2012） 特集：光・量子ビームによるナノダイナミクス

本誌掲載ページ: 1291-1296 p

原稿種別: 資料／日本語

電子版へのリンク: https://www.jstage.jst.go.jp/article/ieejeiss/132/8/132_1291/_article/-char/ja/