Release Time:2019-11-01  Hits:

Indexed by: Journal Article

Date of Publication: 2011-08-07

Journal: JOURNAL OF MATERIALS CHEMISTRY

Included Journals: EI、SCIE

Volume: 21

Issue: 29

Page Number: 10761-10766

ISSN: 0959-9428

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.