Issue 36, 2008
From the journal:

Journal of Materials Chemistry

Cu(i) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system†

I-Che Wu,a   Cheng-Hsuan Lai,a   Dong-Yi Chen,a   Chun- Wei Shih,a   Ching-Yen Wei,b   Bao-Tsan Ko,bc   Ching Tingb  and  Pi-Tai Chou*a  

* Corresponding authors

a Department of Chemistry, National Taiwan University, Taipei, Taiwan
E-mail: chop@ntu.edu.tw
Fax: +886-2-23695208
Tel: +886-2-23630231 ext. 3988

b Materials and Chemical Laboratories, Industrial Technology Research Institute, Hsinchu, Taiwan

c Department of Chemistry, Chung Yuan Christian University, Chung-Li 320, Taiwan

Abstract

We report the Cu+ chelated poly-alkoxythiophene (P3MEET) enhancement of a solar cell device consisting of a P3HT/PCBM heterojunction system. Compared to the reference P3HT/PCBM system, a consistent increase of conversion efficiency of 0.9% via an apparent increase of incident-photon-to-current conversion efficiency (IPCE) is achieved upon optimizing the ratio of P3MEET-Cu+ : P3HT : PCBM to 1 : 9 : 6 by weight, in which 7.5 mol% of CuBr is added upon synthesizing P3MEET-Cu+. The results, in combination with relevant data gathered from atomic force microscopy, cyclic voltammetry, and electrochemical impedance spectra, lead us to conclude that the match in redox potential and increase of ordering of the film upon doping P3MEET-Cu+ play two key roles in enhancing the performance.

Graphical abstract: Cu(i) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system

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Article information

DOI
https://doi.org/10.1039/B805141K
Article type
Paper
Submitted
27 Mar 2008
Accepted
18 Jul 2008
First published
22 Aug 2008

J. Mater. Chem., 2008,18, 4297-4303

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Cu(I) chelated poly-alkoxythiophene enhancing photovoltaic device composed of a P3HT/PCBM heterojunction system

I. Wu, C. Lai, D. Chen, C. W. Shih, C. Wei, B. Ko, C. Ting and P. Chou, J. Mater. Chem., 2008, 18, 4297 DOI: 10.1039/B805141K

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