Synthesis and photovoltaic properties of a furan-diketopyrrolopyrrole-fluorene terpolymer

被引：15

作者：

Balaji, Ganapathy ^{[1
]}

Esfahani, Mehran Samiee ^{[1
]}

Joshi, Pranav ^{[1
]}

Bhattacharaya, Joydeep ^{[1
]}

Jeffries-El, Malika ^{[2
]}

Dalal, Vikram ^{[1
]}

机构：

[1] Iowa State Univ, Microelect Res Ctr, Ames, IA 50011 USA

[2] Iowa State Univ, Dept Chem, Ames, IA 50011 USA

来源：

EUROPEAN POLYMER JOURNAL | 2013年 / 49卷 / 12期

基金：

美国国家科学基金会;

关键词：

Conjugated polymers; Organic photovoltaics; Donor-acceptor system; Optical properties; Electrochemical properties; SCLC; POLYMER SOLAR-CELLS; BAND-GAP POLYMERS; CONJUGATED POLYMERS; COPOLYMER; PERFORMANCE; DESIGN; ENERGY; TRANSISTORS; UNITS;

D O I：

10.1016/j.eurpolymj.2013.08.021

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

We report the synthesis of two solution-processable reduced band gap donor-acceptor conjugated polymers p(C8-DPP-F) and p(C12-DPP-F), composed from 9,9-dioctylfluorene as the donor moiety, diketopyrrolopyrrole (DPP) moiety as the acceptor moiety and furan bridges. Two different alkyl chains, n-dodecyl and n-octyl,were used on the DPP moiety and the impact of this structural modification evaluated in detail. Both polymers exhibited similar optical and electrochemical properties with optical band gap of around 1.75 eV as result of LUMO levels near -3.4 eV and high-lying HOMO levels of similar to 5.2 eV. Bulk heterojunction photovoltaic devices using these polymers electron donors along with PC70BM as the electron acceptor, gave power conversion efficiency of 1.60% and 0.75% for p(C12-DPP-F) and p(C8-DPP-F) respectively. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：3921 / 3928

页数：8

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