Issue 29, 2011
From the journal:

Journal of Materials Chemistry

Two flexible counter electrodes based on molybdenum and tungsten nitrides for dye-sensitized solar cells

Mingxing Wu,a   Qingyu Zhang,b   Jinqiu Xiao,a   Chunyu Ma,b   Xiao Lin,a   Chunyu Miao,b   Youjing He,b   Yurong Gao,a   Anders Hagfeldtc  and  Tingli Ma*a  

* Corresponding authors

a State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian City, Liaoning Province, P. R. China
E-mail: tinglima@dlut.edu.cn
Fax: +86 0411-84986237
Tel: +86 0411-84986230

b Key Laboratory of Materials Modification by Laser, Ion and Electron Beams, Dalian University of Technology, No. 2 Linggong Rd. Ganjingzi District, Dalian City, Liaoning Province, P. R. China

c Department of Physical and Analytical Chemistry, Uppsala University, Box 259, Uppsala, Sweden

Abstract

Two novel flexible counter electrodes (CEs) on Ti sheets using molybdenum and tungsten nitrides (Mo2N, W2N) as catalysts were synthesized and used in a dye-sensitized solar cell (DSC) system. High catalytic activity of the two nitride CEs for the reduction of triiodide were proved by cyclic voltammetry, electrochemical impedance spectroscopy and Tafel-polarization measurements. The DSCs based on Mo2N and W2N CEs achieved power conversion efficiencies of 6.38 and 5.81%, reaching 91 and 83% of the photovoltaic performance of the DSC using a Pt CE, respectively. This research paves a promising way to develop new CE catalysts and reduce the cost of DSCs.

Graphical abstract: Two flexible counter electrodes based on molybdenum and tungsten nitrides for dye-sensitized solar cells

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Article information

DOI
https://doi.org/10.1039/C1JM11422K
Article type
Paper
Submitted
05 Apr 2011
Accepted
09 May 2011
First published
20 Jun 2011

J. Mater. Chem., 2011,21, 10761-10766

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Two flexible counter electrodes based on molybdenum and tungsten nitrides for dye-sensitized solar cells

M. Wu, Q. Zhang, J. Xiao, C. Ma, X. Lin, C. Miao, Y. He, Y. Gao, A. Hagfeldt and T. Ma, J. Mater. Chem., 2011, 21, 10761 DOI: 10.1039/C1JM11422K

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