5,6-Bis(octyloxy)benzo[c][1,2,5]thiadiazole-Bridged Dyes for Dye-Sensitized Solar Cells with High Open-Circuit Voltage Performance

作者：Chen, Long; Li, Xin; Ying, Weijiang; Zhang, Xiaoyu; Guo, Fuling; Li, Jing^*; Hua, Jianli

来源：European Journal of Organic Chemistry, 2013, 2013(9): 1770-1780.

DOI：10.1002/ejoc.201201424

• Heterocycles
• Dyes/pigments
• Electrochemistry
• Photovoltaic properties
• Solar cells

Three new metal-free dyes with a 5,6-bis(octyloxy) benzo[c][1,2,5] thiadiazole core (DOBT-I-III) have been designed and synthesized for use as DSSCs. Their absorption properties and electrochemical and photovoltaic performances have been investigated systematically. The DSSCs based on DOBT-I-III show high open-circuit voltages (V-oc) of 829, 818, and 784 mV, respectively. Of the three dyes, DOBT-III, which contains a thiophene-bridging linker, exhibits the best photovoltaic performance: a short-circuit photocurrent density (J(sc)) of 12.74 mA cm(-2) and a fill factor (FF) of 0.73, which corresponds to an overall conversion efficiency of 7.29% under standard global AM 1.5 solar conditions.

• 出版日期2013-3
• 单位华东理工大学