High performance polymer solar cells based on a two dimensional conjugated polymer from alkylthienyl-substituted benzodifuran and benzothiadiazole

文献情報

出版日 2014-05-02

DOI 10.1039/C4PY00392F

インパクトファクター 5.582

著者

Beibei Qiu, Xuewen Chen, Lu Xiao, Yongfang Li, Yuehui He, Lihui Jiang

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要旨

A new low bandgap D–A copolymer PBDFTDTBT containing 4,8-bis(2-(2-ethylhexyl)thiophen-2-yl)-benzo[1,2-b;3,4-b′]difuran (BDFT) and 4,7-di(thiophen-2-yl)-5,6-dioctyloxybenzo[c][1,2,5]thiadiazole (DTBT) units was synthesized and characterized for application as a donor material in polymer solar cells (PSCs). The PBDFTDTBT film showed a broad absorption band from 300 nm to around 730 nm in the visible light region and the hole mobility of the blend of PBDFTDTBT and PC71BM reached up to 0.36 cm2 V−1 s−1 by using the space charge limited current (SCLC) method. The PSCs based on PBDFTDTBT:PC71BM (1 : 1.5, w/w) exhibited a promising power conversion efficiency (PCE) of 6.0% under the illumination of AM 1.5 G, 100 mW cm−2 with a high short circuit current density (Jsc) of 12.04 mA cm−2 and an open circuit voltage (Voc) of 0.76 V.

掲載誌

Polymer Chemistry

CiteScore: 8.6

自己引用率: 7.3%

年間論文数: 457

Polymer Chemistry welcomes submissions in all areas of polymer science that have a strong focus on macromolecular chemistry. Manuscripts may cover a broad range of fields, yet no direct application focus is required.

High performance polymer solar cells based on a two dimensional conjugated polymer from alkylthienyl-substituted benzodifuran and benzothiadiazole

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