Issue 1, 2015
From the journal:

RSC Advances

Poly(benzo[2,1-b:3,4-b′]dithiophene-alt-isoindigo): a low bandgap polymer showing a high open circuit voltage in polymer solar cells†

Meixiu Wan,abc   Hongbing Zhu,c   Juan Liuab  and  Lijun Huo*ab  

* Corresponding authors

a Key Laboratory of Bio-inspired Smart Interfacial Science and Technology of Ministry of Education, Beijing Key Laboratory of Bio-inspired Energy Materials and Devices, School of Chemistry and Environment, Beihang University, Beijing 100191, P. R. China
E-mail: huolijun@buaa.edu.cn

b Heeger Beijing Research and Development Center, School of Chemistry and Environment, Beihang University, Beijing 100191, P. R. China

c Department of Chemistry and Material Science, Hunan Institute of Humanities, Science and Technology, Loudi 417000, P. R. China

Abstract

A novel optical band gap of 1.57 eV isoindigo (IID)-containing polymer of PBDP-IID was synthesized and the HOMO of the polymer descends to −5.44 eV due to strong electron-deficient isoindigo unit. Bulk heterojunction solar cells made from PBDP-IID exhibited a high Voc of 0.95 V, which shows the highest value among the PSCs based on the narrow bandgap polymer donors with Eg < 1.6 eV.

Graphical abstract: Poly(benzo[2,1-b:3,4-b′]dithiophene-alt-isoindigo): a low bandgap polymer showing a high open circuit voltage in polymer solar cells

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Article information

DOI
https://doi.org/10.1039/C4RA12171F
Article type
Communication
Submitted
11 Oct 2014
Accepted
18 Nov 2014
First published
18 Nov 2014

RSC Adv., 2015,5, 269-273

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Poly(benzo[2,1-b:3,4-b′]dithiophene-alt-isoindigo): a low bandgap polymer showing a high open circuit voltage in polymer solar cells

M. Wan, H. Zhu, J. Liu and L. Huo, RSC Adv., 2015, 5, 269 DOI: 10.1039/C4RA12171F

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