期刊
MATERIALS SCIENCE IN SEMICONDUCTOR PROCESSING
卷 39, 期 -, 页码 292-299出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.mssp.2015.05.023
关键词
Tungsten carbide nanorods; Counter electrode; Electrochemical properties; Large surface area; Catalytic activity
类别
资金
- Ministry of Higher Education
- University of Malaya [UM.C/625/1/HIR/MOHE/SC/21]
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 Xray 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/cm(2)). The solar to electrical energy conversion efficiency (eta) 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. (C) 2015 Elsevier Ltd. All rights reserved.
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