Thermochromic and Photovoltaic Properties of an Alternating Copolymer of Dithieno[3,2-b:2,3-d]thiophene and Thieno[3,4-c]pyrrole-4,6-dione

被引：5
作者：
Li, Zhao [1 ]
Malenfant, Patrick [1 ]
Tao, Ye [2 ]
Ding, Jianfu [1 ]
机构：
[1] Natl Res Council Canada, Inst Chem Proc & Environm Technol, Ottawa, ON K1A 0R6, Canada
[2] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada
来源：
MACROMOLECULAR CHEMISTRY AND PHYSICS | 2013年 / 214卷 / 04期
基金：
加拿大自然科学与工程研究理事会;
关键词：
bulk heterojunction; conjugated polymer; solar cell; THIN-FILM TRANSISTORS; LOW-BANDGAP POLYMERS; CONJUGATED POLYMERS; FUSED THIOPHENES; SOLAR-CELLS; PERFORMANCE; SEMICONDUCTOR;
D O I：
10.1002/macp.201200468
中图分类号：
O63 [高分子化学（高聚物）];
学科分类号：
070305 ; 080501 ; 081704 ;
摘要：
The synthesis of a new alternating conjugated polymer, PDTTTPD, based on electron-donating dithieno[3,2-b:2,3-d]thiophene (DTT) and electron-withdrawing thieno[3,4-c]pyrrole-4,6-dione (TPD) units is reported. This polymer shows strong thermochromic effect in chlorobenzene with a peak shift up to 170 nm. This phenomenon is studied with fluorescence spectroscopy and related to the steric hindrance along the polymer main chain. Polymer solar cells are fabricated from its blends with PC71BM, and shows modest power conversion efficiency up to 2.1%. The low efficiency is due to the low short-circuit current, which is also attributed to the steric effect. Based on these results, a general design rule for polymer photovoltaic material with controlled backbone conformation is proposed.
引用
收藏
页码：447 / 452
页数：6
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