Two flexible counter electrodes based on molybdenum and tungsten nitrides for dye-sensitized solar cells
2011 (English)In: Journal of Materials Chemistry, ISSN 0959-9428, E-ISSN 1364-5501, Vol. 21, no 29, 10761-10766 p.Article in journal (Refereed) Published
Two novel flexible counter electrodes (CEs) on Ti sheets using molybdenum and tungsten nitrides (Mo(2)N, W(2)N) 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 Mo(2)N and W(2)N 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.
Place, publisher, year, edition, pages
2011. Vol. 21, no 29, 10761-10766 p.
IdentifiersURN: urn:nbn:se:uu:diva-157218DOI: 10.1039/c1jm11422kISI: 000292978600028OAI: oai:DiVA.org:uu-157218DiVA: diva2:435876