Improving Structural Order for a High-Performance Diketopyrrolopyrrole-Based Polymer Solar Cell with a Thick Active Layer

被引：37

作者：

Gao, Jing ^{[1
]}

Dou, Letian ^{[1
]}

Chen, Wei ^{[2
,3
]}

Chen, Chun-Chao ^{[1
]}

Guo, Xuanrong ^{[1
]}

You, Jingbi ^{[1
]}

Bob, Brion ^{[1
]}

Chang, Wei-Hsuan ^{[1
]}

Strzalka, Joseph ^{[4
]}

Wang, Cheng ^{[5
]}

Li, Gang ^{[1
]}

Yang, Yang ^{[1
]}

机构：

[1] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA

[2] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA

[3] Univ Chicago, Inst Mol Engn, Chicago, IL 60637 USA

[4] Argonne Natl Lab, Adv Photon Source, Xray Sci Div, Argonne, IL 60439 USA

[5] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA 94720 USA

来源：

ADVANCED ENERGY MATERIALS | 2014年 / 4卷 / 05期

基金：

美国国家科学基金会;

关键词：

thick active layers; diketopyrrolopyrrole; thienylbenzodithiophene; polymer side chains; high carrier mobility; LOW-BANDGAP POLYMER; POWER CONVERSION EFFICIENCY; OPEN-CIRCUIT VOLTAGE; TANDEM POLYMER; CONJUGATED POLYMERS; PHASE-SEPARATION; CHARGE-TRANSPORT; GAP POLYMERS; DESIGN RULES; DONOR;

D O I：

10.1002/aenm.201300739

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A series of low-bandgap polymers based on thienyl benzodithiophene (BDTT) and furan-substituted diketopyrrolopyrrole (FDPP) units with different side chains are presented. By replacing the branched ethylhexyl group on the FDPP unit with linear side chains, the structural order and carrier mobility of the modified polymers are enhanced accordingly. The power conversion efficiencies (PCE) of single-junction devices based on polymers of this series are improved from approximate to 5% to approximate to 7%. More importantly, devices made from the modified polymers show excellent photovoltaic performance with a thick active layer of up to 360 nm, a very promising characteristic for the industrial implementation of polymer solar cell devices.

引用

页数：8

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