Design of planar-zigzag semiconducting polymers to control chain orientation and electronic structure for organic photovoltaics
Design of planar-zigzag semiconducting polymers to control chain orientation and electronic structure for organic photovoltaics
复制标题
设计平面锯齿形半导体聚合物来控制有机光伏的链取向和电子结构
DOI：
10.1039/d2qm00479h
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发表时间：
2022
影响因子：
7
通讯作者：
Tajima Keisuke
中科院分区：
文献类型：
--
作者：
Chen Fengkun;Nakano Kyohei;Kaji Yumiko;Tajima Keisuke
合成了一系列含V型缺电子单元的三苯基并[1，2-c：7，8-c′]双（[1，2，5]噻二唑）（TPTz）及其非稠合前体的π共轭共聚物。TPTz中的环融合和TPTz与供体单元之间的适当间隔单元对于使聚合物采用平面锯齿形作为稳定的链构象都是重要的。的平面锯齿形的形状的聚合物强烈影响其各向异性的电子和电气性能在薄膜中，特别是，面对的取向不仅增加了吸收系数，但也电荷载流子的产生和收集效率，从而提高光伏性能的混合体异质结膜与电子受体。
A series of π-conjugated copolymers containing V-shaped electron-deficient units of triphenyleno[1,2-c:7,8-c′]bis([1,2,5]thiadiazole) (TPTz) or its non-fused precursor were synthesized. Both the ring fusion in TPTz and the appropriate spacer units between TPTz and the donor unit were important for allowing the polymers to adopt a planar-zigzag shape as the stable chain conformation. The planar-zigzag shape of the polymers strongly affected their anisotropic electronic and electrical properties in thin films, and in particular, the face-on orientation increased not only the absorption coefficients but also the charge carrier generation and collection efficiency, resulting in improved photovoltaic performance in mixed bulk heterojunction films with an electron acceptor.