Synthesis and Photovoltaic Properties of Polythiophene Incorporating with 3,4-Difluorothiophene Units

被引：5

作者：

Huang, Linquan ^{[1
,2
]}

Yang, Dong ^{[1
,2
]}

Gao, Qiang ^{[1
,2
]}

Liu, Yan ^{[1
]}

Lu, Shengmei ^{[1
]}

Zhang, Jian ^{[1
]}

Li, Can ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Liaoning, Peoples R China

[2] Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CHINESE JOURNAL OF CHEMISTRY | 2013年 / 31卷 / 11期

基金：

中国国家自然科学基金;

关键词：

polythiophene derivatives; 3; 4-difluorothiophene; polymer solar cell; open-circuit voltage; POLYMER SOLAR-CELLS; OPEN-CIRCUIT VOLTAGE; TO-ROLL FABRICATION; POLY(3-HEXYLTHIOPHENE)/INDENE-C70 BISADDUCT; CONDUCTING POLYMERS; CONJUGATED POLYMER; MOLECULAR-WEIGHT; PERFORMANCE; P3HT/PCBM; FLUORINE;

D O I：

10.1002/cjoc.201300505

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Two polythiophene derivatives using fluorine atoms and hexyl or hexyloxy group as electron-withdrawing and donating substituents have been synthesized. The introduction of fluorine atoms to the polythiophene backbones simultaneously lowers the HOMO and narrows the bandgap, and the stronger electron-donating ability of hexyloxy side chain further reduces the bandgap. As a result, poly[3-hexylthiophene-2,5-diyl-alt-3,4-difluorothiophene] (PHTDFT) shows HOMO and bandgap of -5.31/1.83 eV and poly[3,4-dihexyloxythiophene-2,5-diyl-alt-3,4-difluorothiophene] (PDHOTDFT) shows HOMO and bandgap of -5.14/1.68 eV, both are lower than -4.76/2.02 eV of P3HT. Benefiting from the lower HOMO, PHTDFT:PC61BM (1:1) polymer solar cells obtain a power conversion efficiency of 1.11% and an impressed open-circuit voltage of 0.79 V under solar illumination AM1.5 (100 mW/cm(2)).

引用

页码：1385 / 1390

页数：6

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