Issue 61, 2012
From the journal:

Chemical Communications

High performance low band gap polymer solar cells with a non-conventional acceptor†

Youjun He,a   Jingbi You,a   Letian Dou,a   Chun-Chao Chen,a   Eric Richard,a   Kitty C. Cha,a   Yue Wu,b   Gang Lia  and  Yang Yang*a  

* Corresponding authors

a Department of Materials Science and Engineering & California Nanosystems Institute, University of California, Los Angeles, USA
E-mail: yangy@ucla.edu

b Solarmer Energy Inc, El Monte, USA

Abstract

A novel C70 fullerene derivative was designed and synthesized by [4+2] cyclic addition reaction between indene derivative (methyl 1H-indene-3-carboxylate) and C70. The absorption and photoluminescence of H120 and its mixed films with different polymer donor materials were investigated, as well as its electrochemical property and electron mobility. It was found that H120 has 0.05 eV higher LUMO level than that of PC70BM. Its electron mobility reached 6.32 × 10−4 cm2 V−1 s−1, which is slightly lower than 9.55 × 10−4 cm2 V−1 s−1 of PC70BM. The photovoltaic devices based on P3HT, and two high efficiency low band gap polymers, PBDTTT-C and PBDTTDPP as donors, with H120 as an acceptor gave power conversion efficiencies of 4.2%, 6.0% and 6.2%, respectively.

Graphical abstract: High performance low band gap polymer solar cells with a non-conventional acceptor

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Article information

DOI
https://doi.org/10.1039/C2CC33282E
Article type
Communication
Submitted
08 May 2012
Accepted
11 Jun 2012
First published
13 Jun 2012

Chem. Commun., 2012,48, 7616-7618

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High performance low band gap polymer solar cells with a non-conventional acceptor

Y. He, J. You, L. Dou, C. Chen, E. Richard, K. C. Cha, Y. Wu, G. Li and Y. Yang, Chem. Commun., 2012, 48, 7616 DOI: 10.1039/C2CC33282E

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