He Zhengran, Chen Jihua, Li Dawen
Department of Electrical and Computer Engineering, Center for Materials for Information Technology, The University of Alabama, Tuscaloosa, AL 35487, USA.
Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
Soft Matter. 2019 Jul 24;15(29):5790-5803. doi: 10.1039/c9sm01053j.
Solution-crystallizable small-molecule organic semiconductors, such as 6,13-bis(triisopropylsilylethynyl)pentacene (TIPS pentacene), 5,11-bis(triethylgermylethynyl)anthradithiophene (diF-TEG-ADT), 2,7-dioctyl[1]benzothieno[3,2-b][1]benzothiophene (C8-BTBT), and N,N'-1H,1H-perfluorobutyl dicyanoperylenecarboxydiimide (PDIF-CN2), demonstrate various practical advantages including high mobility, air stability and solution processibility. In this article, we review various polymer additive based approaches to control the crystal morphology and the resultant charge transport of some bench-mark, high performance, solution crystallizable, small-molecule organic semiconductors. The polymer additives are discussed under the categories of non-conjugated polymers and conjugated polymers. The approaches and structure-performance correlations that we discussed here may be applied far beyond the examples shown in this review and have important implications for high performance organic semiconductors in general.
可溶液结晶的小分子有机半导体，如6,13-双（三异丙基硅乙炔基）并五苯（TIPS并五苯）、5,11-双（三乙基锗乙炔基）蒽二噻吩（二氟-TEG-ADT）、2,7-二辛基[1]苯并噻吩并[3,2-b][1]苯并噻吩（C8-BTBT）和N,N'-1H,1H-全氟丁基二氰基苝二甲酰亚胺（PDIF-CN2），具有多种实际优势，包括高迁移率、空气稳定性和溶液可加工性。在本文中，我们综述了各种基于聚合物添加剂的方法，以控制一些基准高性能可溶液结晶小分子有机半导体的晶体形态和由此产生的电荷传输。聚合物添加剂分为非共轭聚合物和共轭聚合物两类进行讨论。我们在此讨论的方法和结构-性能关系可能远远超出本综述中所示的示例，并且总体上对高性能有机半导体具有重要意义。
