Synthesis and photovoltaic properties of a star-shaped molecule with triphenylamine as core and benzo[1,2,5]thiadiazol vinylene as arms

被引：84

作者：

Wu, Guanglong ^{[1
,3
]}

Zhao, Guangjin ^{[1
,3
]}

He, Chang ^{[1
]}

Zhang, Jing ^{[1
,3
]}

He, Qingguo ^{[2
]}

Chen, Xiaomin ^{[1
]}

Li, Yongfang ^{[1
]}

机构：

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

[2] Chinese Acad Sci, Shanghai Inst Microsyst & Informat Technol, Shanghai 200050, Peoples R China

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

来源：

SOLAR ENERGY MATERIALS AND SOLAR CELLS | 2009年 / 93卷 / 01期

关键词：

Star-shaped molecules; Organic photovoltaic materials; Conjugated organic molecules; Solution-processable; Organic solar cells; ORGANIC SOLAR-CELLS; HYBRID SYSTEMS; POLYMERS;

D O I：

10.1016/j.solmat.2008.09.001

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

A solution-processable and star-shaped molecule 4-((E)-2-(benzo[1,2,5]thiadiazol-4-yl)vinyl)-N,N-bis(4-((E)-2-(benzo[1,2,5]thiadiazol-7-yl)vinyl)phenyl)benzenamine (TPA-BT) has been designed and synthesized by palladium-catalyzed Heck reaction for the application in organic solar cells (OSCs). The molecule possesses a D-A structure with a triphenylamine core (donor unit) linked with three benzo[1,2,5]thiadiazole (acceptor unit) arms through double bonds. TPA-BT film shows a strong absorption peak in the visible wavelength range from 400 to 560 nm, which could be ascribed to the charge transfer band of the D-A structure of the molecule. The bulk-heterojunction OSCs with the device structure of ITO/PEDOT:PSS/TPA-BT:PCBM/Ca/Al (or Ba/Al) were fabricated by spin-coating the blend solution of TPA-BT and PCBM (1:3, w/w), in which TPA-BT was used as donor and PCBM as acceptor materials. The devices show a high open circuit voltage of ca. 0.9V and a power conversion under the illumination of AM 1.5 100 mW/cm(2). The results indicate that TPA-BT is a efficiency of 0.61%, promising solution-processable organic photovoltaic material. (C) 2008 Elsevier B.V. All rights reserved.

引用

页码：108 / 113

页数：6

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