Diketopyrrolopyrrole-based small molecules with simple structure for high VOC organic photovoltaics

被引：68

作者：

Lee, Jong Won ^{[1
]}

Choi, Yoon Suk ^{[1
]}

Jo, Won Ho ^{[1
]}

机构：

[1] Seoul Natl Univ, Dept Mat Sci & Engn, Seoul 151744, South Korea

来源：

ORGANIC ELECTRONICS | 2012年 / 13卷 / 12期

关键词：

Small molecule; HOMO; Open circuit voltage; Diketopyrrolopyrrole; HETEROJUNCTION SOLAR-CELLS; POWER CONVERSION EFFICIENCY; OPEN-CIRCUIT VOLTAGE; PHASE-SEPARATION; PERFORMANCE; MORPHOLOGY; DESIGN; DONOR; DERIVATIVES; POLYMERS;

D O I：

10.1016/j.orgel.2012.09.004

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A series of simple structured small molecules based on diketopyrrolopyrrole (DPP) are synthesized and their photovoltaic properties are investigated in terms of the type of electron donating unit. By introducing a donor unit with different electron-donating power such as thiophene (T) and phenylene (Ph), into A-D-A type small molecule, the frontier orbital energy levels of small molecules can effectively be tuned. The small molecule with a weak donor unit of Ph, Ph(TDPP)(2) exhibits a power conversion efficiency of 4.01% with a remarkably high open circuit voltage of 0.93 V when it is blended with [6,6]-phenyl-C-71-butyric acid methyl ester as an active layer material in bulk heterojunction solar cells. (C) 2012 Elsevier B V. All rights reserved.

引用

页码：3060 / 3066

页数：7

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