A low band gap co-polymer of dithienogermole and 2,1,3-benzothiadiazole by Suzuki polycondensation and its application in transistor and photovoltaic cells

被引：83

作者：

Fei, Zhuping ^{[2
,3
]}

Kim, Jong Soo ^{[1
,2
]}

Smith, Jeremy ^{[1
,2
]}

Domingo, Ester Buchaca ^{[2
,4
]}

Anthopoulos, Thomas D. ^{[1
,2
]}

Stingelin, Natalie ^{[2
,4
]}

Watkins, Scott E. ^{[5
]}

Kim, Ji-Seon ^{[1
,2
]}

Heeney, Martin ^{[2
,3
]}

机构：

[1] Univ London Imperial Coll Sci Technol & Med, Dept Phys, London SW7 2AZ, England

[2] Univ London Imperial Coll Sci Technol & Med, Ctr Plast Elect, London SW7 2AZ, England

[3] Univ London Imperial Coll Sci Technol & Med, Dept Chem, London SW7 2AZ, England

[4] Univ London Imperial Coll Sci Technol & Med, Dept Mat, London SW7 2AZ, England

[5] CSIRO, Clayton, Vic 3169, Australia

来源：

JOURNAL OF MATERIALS CHEMISTRY | 2011年 / 21卷 / 40期

基金：

英国工程与自然科学研究理事会;

关键词：

HETEROJUNCTION SOLAR-CELLS; CONJUGATED POLYMERS; BULK-HETEROJUNCTIONS; CHARGE-TRANSPORT; PERFORMANCE; SEMICONDUCTORS; THIOPHENE; EFFICIENT; ROBUST; DONOR;

D O I：

10.1039/c1jm13628c

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the preparation of a 4,4'-bis(2-ethylhexyl) dithieno[3,2-b:2',3'-d]germole monomer and its polymerisation with 2,1,3-benzothiadiazole. Unlike the analogous dithienosilole, the dithienogermole is sufficiently stable under basic conditions to enable Suzuki polycondensation. The resulting high molecular weight polymer exhibits a high propensity to order in the solid state and demonstrates charge carrier mobilities up to 0.11 cm(2) V-1 s(-1) in field effect transistors. A PGeBTBT based BHJ solar cell device achieved a PCE of 4.5% with a high J(sc) of 18.6 mA cm(-2).

引用

页码：16257 / 16263

页数：7

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