Solution-processable thienoisoindigo-based molecular donors for organic solar cells with high open-circuit voltage
Solution-processable thienoisoindigo-based molecular donors for organic solar cells with high open-circuit voltage
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DOI：
10.1016/j.dyepig.2014.12.004
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发表时间：
2015-04
影响因子：
4.5
通讯作者：
Oleh Vybornyi;Yue Jiang;F. Baert;D. Demeter;J. Roncali;P. Blanchard;C. Cabanetos
中科院分区：
文献类型：
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作者：
Oleh Vybornyi;Yue Jiang;F. Baert;D. Demeter;J. Roncali;P. Blanchard;C. Cabanetos
合成了两个以三苯胺或N-苯基咔唑为给体嵌段(D)，以亚硫代异铟为受体单元(A)的乙炔桥联给电子体-受体-供体(D-A-D)型小分子，并用UV-Vis吸收光谱和循环伏安法对其进行了表征。将这些供体材料与[6，6]-苯基-C61-丁酸甲酯混合，通过简单的溶液处理法制备体异质结太阳电池。由于它们的最高占据轨道能级较低，测量到了高达0.99伏特的高开路电压。三苯胺末端封端的衍生物导致了最好的功率转换效率，约为2.20%，这是硫代异铟材料中报道的最高值之一。
Two acetylene-bridged Donor–Acceptor–Donor (D-A-D) type small pi-conjugated molecules involving triphenylamine orN-phenylcarbazole as donor blocks (D) and thienoisoindigo as the acceptor unit (A) were synthesized and characterized by UV–Vis absorption and cyclic voltammetry. These donor materials were mixed with [6,6]-phenyl-C61-butyric acid methyl ester to prepare bulk heterojunction solar cells by simple solution processing. Due to their low-lying highest occupied molecular orbital energy levels, high open-circuit voltages up to 0.99 V were measured. The triphenylamine end-capped derivative led to the best power conversion efficiency ofca2.20%, which ranks among the highest reported value for thienoisoindigo-based materials.