Germafluorenes: New Heterocycles for Plastic Electronics

被引：104

作者：

Allard, Nicolas ^{[1
]}

Aich, Reda Badrou ^{[1
,2
]}

Gendron, David ^{[1
]}

Boudreault, Pierre-Luc T. ^{[1
]}

Tessier, Christian ^{[1
]}

Alem, Salima ^{[2
]}

Tse, Shing-Chi ^{[2
]}

Tao, Ye ^{[2
]}

Leclerc, Mario ^{[1
]}

机构：

[1] Univ Laval, Dept Chim, Quebec City, PQ G1V 0A6, Canada

[2] Natl Res Council Canada, Inst Microstruct Sci, Ottawa, ON K1A 0R6, Canada

来源：

MACROMOLECULES | 2010年 / 43卷 / 05期

基金：

加拿大自然科学与工程研究理事会;

关键词：

POLYMER SOLAR-CELLS; CONJUGATED POLYMERS; BANDGAP; PERFORMANCE; COPOLYMERS; POLY(2,7-DIBENZOSILOLE); SEMICONDUCTORS; DERIVATIVES;

D O I：

10.1021/ma9025866

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 and characterization of new heterofluorene derivatives based oil germanium are described. These germafluorene monomers have been polymerized with different aromatic comonomers. The resulting homopolymers and alternating copolymers have been characterized by size exclusion chromatography, thermal analyses (TGA and DSQ, UV-vis-NIR absorption spectroscopy, X-ray diffraction, and cyclic voltammetry. These homopolymers and copolymers are air-stable and present bandgaps ranging from 3.0 to 1.6 eV. Some copolymers were tested in field-effect transistors (FETs) and bulk heterojunction photovoltaic cells (PCs). Best results in FETs were obtained with poly[2,7-(9,9-di-n-butylgermafluorene)-alt-3,6-bis thiophen-5-yl)-2,5-dioctylpyrrolo[3,4-]pyrrole-1,4-dione], which shows a hole mobility Lip to 0.04 cm(2) (V.s)(-1) with an I-on/I-off ratio of 1.0 x 10(6). For photovoltaic applications, the best results were obtained with poly[2,7-(9,9-di-n-octylgermafluorene)-alt-5,5-(4',7'-di-2-thienyl-2',1',3'-benzothiadiazole)] with a power conversion efficiency (PCE) of 2.8%.

引用

页码：2328 / 2333

页数：6

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