Dithienocoronene diimide based conjugated polymers as electron acceptors for all-polymer solar cells
Dithienocoronene diimide based conjugated polymers as electron acceptors for all-polymer solar cells
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DOI：
10.1016/j.solmat.2013.01.005
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发表时间：
2013-05
影响因子：
6.9
通讯作者：
Weiyi Zhou;Zhiguo Zhang;Lanchao Ma;Yongfang Li;X. Zhan
中科院分区：
文献类型：
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作者：
Weiyi Zhou;Zhiguo Zhang;Lanchao Ma;Yongfang Li;X. Zhan
设计并合成了一系列含不同噻吩单元数的二噻吩并二苯并二亚胺类n型共聚物。可溶性聚合物P1-P3表现出良好的热稳定性，分解温度为340 - 390°C。随着共聚物中噻吩数目的增加，吸收光谱（400- 700 nm）发生红移，光学带隙（1.7-1.9eV）减小。这些聚合物的估计LUMO（约为100）。-3.5eV）对噻吩数相对不敏感，而HOMO（-6.0到-5.7eV）随着噻吩数的增加而上移。溶液处理的本体异质结全聚合物太阳能电池是使用聚合物P1-P3作为受体和聚噻吩衍生物PT 5 TPA作为供体制造的。功率转换效率（高达0.84%）的增加而增加的噻吩数的聚合物受体。
A series of n-type copolymers based on dithienocoronene diimide with different number of thiophene units have been designed and synthesized by Pd-catalyzed Stille coupling polymerization. The soluble polymers P1–P3 exhibit good thermal stability with decomposition temperatures of 340−390°C. The absorption spectra (400–700nm) red shift, and optical band gap (1.7–1.9eV) decreases with increasing thiophene number in the copolymers. The estimated LUMOs for these polymers (ca. −3.5eV) are relatively insensitive to thiophene number, while the HOMOs (−6.0 to −5.7eV) up shift with increasing thiophene number. Solution processed bulk heterojunction all-polymer solar cells are fabricated using polymers P1–P3 as acceptor and polythiophene derivative PT5TPA as donor. Power conversion efficiencies (upto 0.84%) increase with increasing thiophene number in the polymer acceptors.