Influence of Solid-State Packing of Dipolar Merocyanine Dyes on Transistor and Solar Cell Performances
Influence of Solid-State Packing of Dipolar Merocyanine Dyes on Transistor and Solar Cell Performances
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DOI：
10.1021/jacs.5b06722
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发表时间：
2015-10-28
影响因子：
15
通讯作者：
Wuerthner, Frank
中科院分区：
文献类型：
--
作者：
Arjona-Esteban, Alhama;Krumrain, Julian;Wuerthner, Frank
一系列九种偶极部花青染料已被研究作为晶体管和太阳能电池中的有机半导体。这些染料表现出具有不同维序的单晶堆积图案，这可以与所研究的器件的性能相关。因此，具有 J 型激子耦合的阶梯状滑动堆叠中的染料的长程有序有利于电荷传输并提高太阳能电池的性能。通过 UV-vis、AFM 和 XRD 实验研究了晶体管薄膜和太阳能电池有源层的不同形貌。含硒供体-受体(D-A)二甲川染料4显示出最高的空穴迁移率，为0.08 cm(2) V-1 s(-1)。利用给体材料的高结晶度对基于染料 4 的 BHJ 太阳能电池进行了优化，PCE 高达 6.2%。
A series of nine dipolar merocyanine dyes has been studied as organic semiconductors in transistors and solar cells. These dyes exhibited single-crystal packing motifs with different dimensional ordering, which can be correlated to the performance of the studied devices. Hereby, the long-range ordering of the dyes in staircase-like slipped stacks with J-type excitonic coupling favors charge transport and improves solar cell performance. The different morphologies of transistor thin films and solar cell active layers were investigated by UV-vis, AFM, and XRD experiments. Selenium-containing donor-acceptor (D-A) dimethine dye 4 showed the highest hole mobility of 0.08 cm(2) V-1 s(-1). BHJ solar cells based on dye 4 were optimized by taking advantage of the high crystallinity of the donor material and afforded a PCE of up to 6.2%.