Synthesis and properties of a novel narrow band gap oligomeric diketopyrrolopyrrole-based organic semiconductor

被引：9

作者：

Le Borgne, Mylene ^{[1
,2
,3
,4
]}

Quinn, Jesse ^{[4
]}

Martin, Jaime ^{[5
,6
]}

Stingelin, Natalie ^{[5
,6
]}

Wantz, Guillaume ^{[1
,2
,3
]}

Li, Yuning ^{[4
]}

机构：

[1] Univ Bordeaux, IMS, UMR 5218, F-33400 Talence, France

[2] CNRS, IMS, UMR 5218, F-33400 Talence, France

[3] Bordeaux INP, IMS, UMR 5218, F-33400 Talence, France

[4] Univ Waterloo, Dept Chem Engn, 200 Univ Ave West, Waterloo, ON N2L 3G1, Canada

[5] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London, England

[6] Univ London Imperial Coll Sci Technol & Med, Ctr Plast Elect, London, England

来源：

DYES AND PIGMENTS | 2016年 / 131卷

关键词：

Organic solar cells; Organic semiconductors; Oligomers; Organic thin film transistors; Nanophase separation; Morphology; POWER-CONVERSION EFFICIENCY; HETEROJUNCTION SOLAR-CELLS; THIN-FILM TRANSISTORS; SMALL-MOLECULE; HIGH-MOBILITY; PHOTOVOLTAIC PROPERTIES; POLYMER SEMICONDUCTOR; CONJUGATED POLYMERS; SOLVENT ADDITIVES; CHARGE-TRANSPORT;

D O I：

10.1016/j.dyepig.2016.04.002

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

A trimer of diketopyrrolopyrole (DPP), Tri-BTDPP, was synthesized and characterized. Tri-BTDPP has a HOMO level of -5.34 eV, a low band gap of 1.33 eV, and a hole mobility of similar to 10(-3) cm(2) V-1 s(-1) in organic field effect transistors (OFETs). Organic photovoltaic (OPV) devices using the donor/acceptor blends of Tri-BTDPP and PC71BM exhibited low power conversion efficiencies (PCE) of up to 0.72%, even though the desirable optical and electronic characteristics of this compound as a donor semiconductor for achieving high performance for OPV. Through an intensive study of the active layer using AFM, XRD, and DSC, it was found that Tri-BTDPP and PC71BM were unable to intermix and formed oversized Tri-BTDPP phases, resulting in poor charge separation. Some guidance on how to improve the OPV performance of Tri-DPP compounds is provided. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：160 / 167

页数：8

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