Facile synthesis of tungsten carbide nanorods and its application as counter electrode in dye sensitized solar cells

Vijayakumar, P. and Senthil Pandian, M. and Lim, S.P. and Pandikumar, A. and Huang, N.M. and Mukhopadhyay, S. and Ramasamy, P. (2015) Facile synthesis of tungsten carbide nanorods and its application as counter electrode in dye sensitized solar cells. Materials Science in Semiconductor Processing, 39. pp. 292-299. ISSN 1369-8001, DOI https://doi.org/10.1016/j.mssp.2015.05.023.

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Official URL: http://dx.doi.org/10.1016/j.mssp.2015.05.023


Tungsten carbide nanorods (WC-NRs) are synthesized by pseudomorphic transformation of chemically synthesized W3O8 nanorods using a high-temperature method. The WC-NRs was introduced into dye sensitized solar cell (DSSC) as counter electrode (CE) catalyst to replace the expensive platinum (Pt). The synthesized WC-NRs were characterized by field emission scanning electron microscopy (FESEM), BET surface area analysis and powder X-ray diffraction (PXRD) measurements. The electrochemical properties of WC-NRs counter electrode were studied using electrochemical impedance spectroscopy (EIS) techniques. The photovoltaic performance of the DSSC with WC-NRs counter electrode was evaluated under simulated standard global AM 1.5G sunlight (100 mW/cm2). The solar to electrical energy conversion efficiency (η) of the WC-NRs with binder and binder free based DSSC was found to be 1.92% and 0.59% respectively. The cell performance can be attributed to the WC-NRs network, catalytic redox activity and 1-D efficient charge-transfer network. Such WC-NRs configuration as CE provides a potential feasibility for counter electrodes in DSSC applications.

Item Type: Article
Funders: Ministry of Higher Education and University of Malaya: High Impact Research Grant (UM.C/625/1/HIR/MOHE/SC/21)
Uncontrolled Keywords: Tungsten carbide nanorods; Counter electrode; Electrochemical properties; Large surface area; Catalytic activity
Subjects: Q Science > Q Science (General)
Q Science > QC Physics
Divisions: Faculty of Science > Department of Physics
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 01 Oct 2018 03:41
Last Modified: 01 Oct 2018 03:41
URI: http://eprints.um.edu.my/id/eprint/19495

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