Two new metal-free organic dyes with D–A–π–A structure containing monotriphenylamine as electron donor and cyanoacrylic acid as end electron acceptor were prepared. All intermediates and organic photosensitizers were specified by analytical techniques. The cyclic voltammetry analysis was employed to examine the possibility of applying organic dyes in dye-sensitized solar cells and the results show that the charge transfer overall is done thermodynamically. Three configurations as individual, co-sensitization and tandem were selected for the investigation of photovoltaic properties. The photovoltaic investigation shows efficiency of 3.84%, 5.61%, 7.74% and 8.69% for Dye 1, Dye 2, co-sensitization and tandem structure, respectively.

中文翻译：

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新型具有硫代吲哚基的D–A–π–A有机光敏剂，可用于高效的染料敏化太阳能电池

制备了两种新的无金属有机染料，其结构为D–A–π–A，其中单三苯胺为电子供体，氰基丙烯酸为末端电子受体。所有中间体和有机光敏剂均通过分析技术确定。循环伏安分析用于检查在染料敏化太阳能电池中使用有机染料的可能性，结果表明电荷转移总体上是热力学完成的。选择了三种配置，分别是个人配置，共增感配置和串联配置来研究光伏性能。光伏调查显示，染料1，染料2，共敏化和串联结构的效率分别为3.84％，5.61％，7.74％和8.69％。