کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9618725 | 49464 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Interface modification to optimize charge separation in cyanine heterojunction photovoltaic devices
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
We investigate heterojunction photovoltaic devices using the carbocyanine 1,1â²-diethyl-3,3,3â²,3â²-tetramethylcarbocyanine perchlorate (Cy5) as donor and buckminsterfullerene (C60) as acceptor. We find that photocurrent generation occurs at the interface between CY5 and indium tin oxide (ITO) as well as at the organic heterointerface. By analyzing the spectral dependence of the photocurrent as a function of applied voltage, we were able to demonstrate that poly(3,4-ethylenedioxythiophene) (PEDOT) inhibits electron injection from the cyanine into ITO. Since the photocurrent generation at the ITO electrode is opposite to the one generated at the organic heterojuncion, the use of PEDOT leads to increased short-circuit current and open-circuit voltage.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 87, Issues 1â4, May 2005, Pages 817-824
Journal: Solar Energy Materials and Solar Cells - Volume 87, Issues 1â4, May 2005, Pages 817-824
نویسندگان
Frank Nüesch, Gregory Tornare, Libero Zuppiroli, Fanshun Meng, Kongchang Chen, He Tian,