Molecular design of triarylamine dyes incorporating phenylene spacer and the influence of alkoxy substituent on the performance of dye-sensitized solar cells

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• 作者：Hongyu  ; Han ; Mao  ; Liang  ; ;   ; ^{liangmao717@126.com} ; Kai  ; Tang ; Xiaobing  ; Cheng ; Xueping  ; Zong ; Zhe  ; Sun ; Song  ; Xue  ; ;   ; ^{xuesong@ustc.edu.cn}
• 关键词：Dye-sensitized solar cell ; Photovoltaic ; High molar extinction coefficient ; Phenylene spacer
• 刊名：Journal of Photochemistry and Photobiology A: Chemistry
• 出版年：2011
• 出版时间：1 December 2011
• 年：2011
• 卷：225
• 期：1
• 页码：8-16
• 全文大小：1050 K

文摘

Molecular design and understanding the structure¨Cproperty relationship of ¦Ð-conjugated spacer play pivotal roles in realization of considerable enhancement performance of dye-sensitized solar cells (DSSCs). Three triphenylmaine dyes, namely MX11-13, have been designed and synthesized, which incorporate 2,2,6,6-tetramethylbenzo[1,2-d;4,5-d¡ä]bis[1,3]dioxole (TMBD), phenyl and 1,4-dipropoxybenzene (DPB) as ¦Ð-conjugated spacer, respectively. The effects of alkoxy substituent upon the photophysical, electro-chemical characteristics and performance of dye-sensitized solar cells are investigated. For a typical device, the MX13-based cell affords an overall power conversion efficiency (¦Ç) of 7.02 % , with short-circuit photocurrent density (J_SC), open-circuit voltage (V_OC) and fill factor (ff) of 15.5 mA cm^?, 697 mV and 0.65, respectively.