Synthesis and Characterization of New Thieno[3,4-c] pyrrole-4,6-dione Derivatives for Photovoltaic Applications

被引：169

作者：

Najari, Ahmed ^{[1
]}

Beaupre, Serge ^{[1
]}

Berrouard, Philippe ^{[1
]}

Zou, Yingping ^{[1
]}

Pouliot, Jean-Remi ^{[1
]}

Lepage-Perusse, Charlotte ^{[1
]}

Leclerc, Mario ^{[1
]}

机构：

[1] Univ Laval, Dept Chem, Canada Res Chair Electroact & Photoact Polymers, Quebec City, PQ G1V 0A6, Canada

来源：

ADVANCED FUNCTIONAL MATERIALS | 2011年 / 21卷 / 04期

基金：

加拿大自然科学与工程研究理事会;

关键词：

POLYMER SOLAR-CELLS; EFFICIENCY; COPOLYMERS;

D O I：

10.1002/adfm.201001771

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new class of low-bandgap copolymers based on benzodithiophene (BDT) and thieno[3,4-c]pyrrole-4,6-dione (TPD) units is reported. Chemical modifications of the conjugated backbone promote both high molecular weights and processability while allowing for tuning of the electronic properties. Copolymers with substituted thiophene spacers (alkyl chains facing the BDT unit) or unsubstituted thiophene spacers tend to have low power conversion efficiencies (PCE less than 1%) due to a bad morphology of the active layer, whereas copolymers with substituted thiophene spacers (alkyl chains facing TPD unit) show enhanced morphology and PCEs up to of 3.9%. Finally, BDT-TPD copolymers without any thiophene spacers still show the best performances with power conversion efficiencies up to 5.2%.

引用

页码：718 / 728

页数：11

共 26 条

[1] Flexible large area polymer solar cells based on poly(3-hexylthiophene)/fullerene [J].