Rational design of π-bridges for ambipolar DPP-RH-based small molecules in organic photovoltaic cells

被引：21

作者：

Eom, Yoonho ^{[1
]}

Song, Chang Eun ^{[2
]}

Shin, Won Suk ^{[2
]}

Lee, Sang Kyu ^{[2
]}

Lim, Eunhee ^{[1
]}

机构：

[1] Kyonggi Univ, Dept Chem, San 94-6, Suwon 443760, Gyeonggi, South Korea

[2] KRICT, 100 Jang Dong, Daejeon 305600, South Korea

来源：

JOURNAL OF INDUSTRIAL AND ENGINEERING CHEMISTRY | 2017年 / 45卷

基金：

新加坡国家研究基金会;

关键词：

Organic photovoltaic cell (OPV); Organic solar cell; Diketopyrrolopyrrole (DPP); Thiophene; Acceptor; POLYMER SOLAR-CELLS; POWER CONVERSION EFFICIENCY; BAND-GAP POLYMER; 11-PERCENT EFFICIENCY; ELECTRON-ACCEPTORS; PERFORMANCE; DIKETOPYRROLOPYRROLE; FULLERENE; BENZOTHIADIAZOLE; OLIGOTHIOPHENES;

D O I：

10.1016/j.jiec.2016.10.001

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report the synthesis of a series of A1-pi-A2-pi-A1-type small molecules, DPP2T-RH, DPPFT-RH, and DPPT-RH, in which thiophene and furan were introduced to bridge the two strong electron-withdrawing units of DPP and rhodanine (RH). Interestingly, these DPP-RH-based small molecules exhibited ambipolar characteristics, showing photovoltaic performance both as donors and acceptors in combination with PC71BM and P3HT, respectively. The best power conversion efficiencies were obtained from DPPFT-RH (1.77%) and DPP2T-RH (1.28%) as donor and acceptor, respectively. Their physical properties, film packing ability, and photovoltaic performances were fine-tuned by rational design of pi-bridges. (C) 2016 The Korean Society of Industrial and Engineering Chemistry. Published by Elsevier B.V. All rights reserved.

引用

页码：338 / 348

页数：11

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