Very Large Photoconduction Enhancement Upon Self-Assembly of a New Triindole Derivative in Solution-Processed Films
作者:Francisco Gallego-Gómez、Eva M. García-Frutos、José M. Villalvilla、José A. Quintana、Enrique Gutierrez-Puebla、Angeles Monge、María A. Díaz-García、Berta Gómez-Lor
DOI:10.1002/adfm.201000956
日期:2011.2.22
A new carbazole‐related small molecule exhibiting self‐assembly into ordered nanostructures in solution‐processed cast films has been synthesized and its charge‐photogeneration and ‐transport properties have been investigated. Large photoconductivity was measured in the amorphous state while an enormous improvement in the photoconduction properties was observed when the molecules spontaneously organized
合成了一种新的与咔唑有关的小分子,该小分子在溶液加工的流延膜中表现出自组装成有序的纳米结构,并研究了其电荷光生和传输性质。在无定形状态下测得较大的光电导性,而当分子自发组织时,观察到光电导性能的巨大改善。自组装时,光电流最多增加了四个数量级,这主要是由于电荷光生作用的急剧增强所致。X射线分析表明,芳族核在最终的纳米结构中排列非常有利,这可以解释这些改进。mA cm -2的光电流,开/关比为10 4 低场强和光强度下的单位量子效率以及迄今报道的最佳值之一,以及制造的简便性,使得这种易于获得的有机体系在塑料光电器件中具有巨大的应用潜力。