Bulk Heterojunction Solar Cells Using Thieno[3,4-c]pyrrole-4,6-dione and Dithieno[3,2-b:2鈥?3鈥?d]silole Copolymer with a Power Conversion Efficiency of 7.3%

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• 作者：Ta-Ya Chu ; Jianping Lu ; Serge Beaupr茅 ; Yanguang Zhang ; Jean-R茅mi Pouliot ; Salem Wakim ; Jiayun Zhou ; Mario Leclerc ; Zhao Li ; Jianfu Ding ; Ye Tao
• 刊名：Journal of the American Chemical Society
• 出版年：2011
• 出版时间：March 30, 2011
• 年：2011
• 卷：133
• 期：12
• 页码：4250-4253
• 全文大小：748K
• 年卷期：v.133,no.12(March 30, 2011)
• ISSN：1520-5126

文摘

A new alternating copolymer of dithienosilole and thienopyrrole-4,6-dione (PDTSTPD) possesses both a low optical bandgap (1.73 eV) and a deep highest occupied molecular orbital energy level (5.57 eV). The introduction of branched alkyl chains to the dithienosilole unit was found to be critical for the improvement of the polymer solubility. When blended with PC₇₁BM, PDTSTPD exhibited a power conversion efficiency of 7.3% on the photovoltaic devices with an active area of 1 cm².