An A(2)-pi-A(1)-pi-A(2)-type small molecule donor for high-performance organic solar cells
An A(2)-pi-A(1)-pi-A(2)-type small molecule donor for high-performance organic solar cells
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用于高性能有机太阳能电池的A(2)-pi-A(1)-pi-A(2)型小分子供体
DOI：
10.1039/c9tc01251f
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发表时间：
2019
影响因子：
6.4
通讯作者：
Qiu Huayu
中科院分区：
文献类型：
--
作者：
Zhang Qian;Sun Yanna;Chen Xianjie;Lin Zhijing;Ke Xin;Wang Xiaoyuan;He Tian;Yin Shouchun;Chen Yongsheng;Qiu Huayu
以3-双（4-（2-乙基己基）噻吩基）-5，7-双（2-乙基己基）苯并[1，2：4，5-c′]二噻吩-4，8-二酮（BDD）为中心受体单元（A1），噻吩-烷氧基苯-噻吩为π桥，茚二酮（IN）为封端单元（A2），合成了一种新的A2-π-A1-π-A2型小分子BDD-IN.最佳功率转换效率（PCE）为8.70%，高开路电压（Voc）为0.965 V，高填充因子（FF）为72.3%。
A new A2–π–A1–π–A2-type small molecule denoted as BDD–IN was synthesized employing a strong electron-withdrawing unit, 3-bis(4-(2-ethylhexyl)-thiophen-2-yl)-5,7-bis(2-ethylhexyl)benzo[1,2:4,5-c′]-dithiophene-4,8-dione (BDD) as the central acceptor unit (A1), thiophene-alkoxy benzene-thiophene as the π-bridge, and indenedione (IN) as the end-capped unit (A2). An optimal power conversion efficiency (PCE) of 8.70% with a high open-circuit voltage (Voc) of 0.965 V and a high fill factor (FF) of 72.3% was achieved.