Synthesis and Photovoltaic Properties of Bithiazole-Based Donor-Acceptor Copolymers

被引：102

作者：

Zhang, Maojie ^{[1
,2
]}

Fan, Haijun ^{[1
,2
]}

Guo, Xia ^{[1
]}

He, Youjun ^{[1
]}

Zhang, Zhiguo ^{[1
]}

Min, Jie ^{[1
]}

Zhang, Jing ^{[1
,2
]}

Zhao, Guangjin ^{[1
]}

Zhan, Xiaowei ^{[1
]}

Li, Yongfang ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Chem, CAS Key Lab Organ Solids, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China

[2] Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China

来源：

MACROMOLECULES | 2010年 / 43卷 / 13期

关键词：

POLYMER SOLAR-CELLS; FIELD-EFFECT TRANSISTORS; NARROW-BAND-GAP; BULK-HETEROJUNCTION; ELECTROCHEMICAL PROPERTIES; CONJUGATED COPOLYMERS; BROAD ABSORPTION; PERFORMANCE; EFFICIENCY; UNITS;

D O I：

10.1021/ma100767b

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Three new donor-acceptor (D A) alternative copolymers containing bithiazole acceptor unit and the donor unit of carbazole (11), dithienopyrrole (1'2), or dithienosilole (P3) were synthesized for the application as donor materials in polymer solar cells (PSCs) The copolymers were characterized by TGA, UV-vis absorption, electrochemical cyclic voltammetry and photovoltaic measurements The results indicate that the donor units in the copolymers influence the bandgaps, electronic energy levels and photvoltaic properties of the copolymers significantly Among the three copolymers, P3 with the donor unit of dithienosilole shows an absorption spectrum similar to that of P3HT, suitable HOMO energy level at 5 18 eV, a higher hole mobility of 3.07 x 10(-4)cm(2)/V s and promising photovoltaic properties The power conversion efficiency of the PSC based on P3. PC70BM = 1 1 (w/w) reached 2 86% with short circuit current of 7 85 mA/cm(2), open circuit voltage of 0 68 V. and fill factor of 0 535. under the illumination of AM I 5, 100 m W/cm(2)

引用

页码：5706 / 5712

页数：7

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