Improved Charge Transport and Absorption Coefficient in Indacenodithieno[3,2-b]thiophene-based Ladder-Type Polymer Leading to Highly Efficient Polymer Solar Cells

被引：336

作者：

Xu, Yun-Xiang ^{[1
]}

Chueh, Chu-Chen ^{[1
]}

Yip, Hin-Lap ^{[1
]}

Ding, Fei-Zhi ^{[2
]}

Li, Yong-Xi ^{[1
]}

Li, Chang-Zhi ^{[1
]}

Li, Xiaosong ^{[2
]}

Chen, Wen-Chang ^{[3
,4
]}

Jen, Alex K. -Y. ^{[1
]}

机构：

[1] Univ Washington, Dept Mat Sci & Engn, Seattle, WA 98195 USA

[2] Univ Washington, Dept Chem, Seattle, WA 98195 USA

[3] Natl Taiwan Univ, Dept Chem Engn, Taipei 106, Taiwan

[4] Natl Taiwan Univ, Inst Polymer Sci & Engn, Taipei 106, Taiwan

来源：

ADVANCED MATERIALS | 2012年 / 24卷 / 47期

基金：

美国国家科学基金会;

关键词：

ladder-type donor; fused-thiophenes; polymer solar cells; intramolecular charge transfer; charge mobility; absorption coefficient; FIELD-EFFECT TRANSISTORS; LOW BANDGAP POLYMERS; OPEN-CIRCUIT VOLTAGE; ORGANIC PHOTOVOLTAICS; CONJUGATED POLYMERS; SEMICONDUCTING POLYMERS; CARRIER MOBILITY; GAP POLYMERS; PERFORMANCE; INDACENODITHIOPHENE;

D O I：

10.1002/adma.201203246

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A novel ladder-type donor (IDTT) is developed by substituting the two outward thiophenes of the IDT donor with two thieno[3,2-b]thiophenes. The polymer derived from this donor possesses longer effective conjugation and better planarity, which improves electron delocalization along the polymer backbone and charge mobility. The polymer solar cell device using PIDTT-DFBT shows a high power conversion efficiency of 7.03% with a large open-circuit voltage of 0.95 V without using any additives or post-solvent/thermal annealing processes. Copyright © 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

引用

页码：6356 / 6361

页数：6

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