Issue 34, 2012
From the journal:

Journal of Materials Chemistry

A new benzo[1,2-b:4,5-b′]difuran-based copolymer for efficient polymer solar cells†

Xuewen Chen,‡a   Bo Liu,‡ab   Yingping Zou,*ab   Lu Xiao,a   Xiuping Guo,a   Yuehui Heb  and  Yongfang Lic  

* Corresponding authors

a College of Chemistry and Chemical Engineering, Central South University, Changsha 410083, China
E-mail: yingpingzou@csu.edu.cn

b State key Laboratory for Powder Metallurgy, Central South University, Changsha 410083, China

c Beijing National Laboratory for Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China

Abstract

A new donor–acceptor type copolymer, namely poly{4,8-bis(2-ethylhexyloxy)benzo[1,2-b:3,4-b′]difuran-alt-6-octylnaphtho[2,3-c]thiophene-4,9-dione} (PBDFNTDO) was synthesized by a Stille coupling reaction and characterized by 1H NMR, GPC, TGA, UV-Vis absorption spectroscopy and cyclic voltammetry. PBDFNTDO is readily soluble in common organic solvents with a number-average molecular weight (Mn) of 10.7 kDa mol−1 and a polydispersity index of 1.71. TGA analysis shows the copolymer exhibits good thermal stability with 5% weight loss at a temperature of 341 °C. PBDFNTDO possesses a broad absorption band at 300–750 nm with an optical bandgap of 1.65 eV. Cyclic voltammetry gives HOMO and LUMO energy levels of −5.33 eV and −3.40 eV, respectively. The hole mobility of PBDFNTDO:PC71BM (1 : 1.5, w/w) reaches up to 5.0 × 10−3 cm2 V−1 s−1 by the space-charge-limited current (SCLC) method. A polymer solar cell with the configuration of ITO/PEDOT:PSS/PBDFNTDO:PC71BM (1 : 1.5, w/w)/Ca/Al demonstrates a promising power conversion efficiency of 4.71% under the illumination of AM 1.5 G, 100 mW cm−2.

Graphical abstract: A new benzo[1,2-b:4,5-b′]difuran-based copolymer for efficient polymer solar cells

About
Cited by
Related
Download options Please wait...

Supplementary files

Article information

DOI
https://doi.org/10.1039/C2JM32843G
Article type
Paper
Submitted
06 May 2012
Accepted
09 Jun 2012
First published
13 Jun 2012

J. Mater. Chem., 2012,22, 17724-17731

Permissions

Request permissions

A new benzo[1,2-b:4,5-b′]difuran-based copolymer for efficient polymer solar cells

X. Chen, B. Liu, Y. Zou, L. Xiao, X. Guo, Y. He and Y. Li, J. Mater. Chem., 2012, 22, 17724 DOI: 10.1039/C2JM32843G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Spotlight

Advertisements