Solution processed transition metal sulfides: application as counter electrodes in dye sensitized solar cells (DSCs).

Mulmudi, Hemant Kumar; Batabyal, Sudip Kumar; Rao, Manohar; Prabhakar, Rajiv Ramanujam; Mathews, Nripan; Lam, Yeng Ming; Mhaisalkar, Subodh Gautam

Mulmudi, Hemant Kumar; Batabyal, Sudip Kumar; Rao, Manohar; Prabhakar, Rajiv Ramanujam; Mathews, Nripan; Lam, Yeng Ming; Mhaisalkar, Subodh Gautam.

Afiliación

Mulmudi HK; School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798.

Phys Chem Chem Phys ; 13(43): 19307-9, 2011 Nov 21.

Article en En | MEDLINE | ID: mdl-21964615

RESUMEN

A solution processed method for fabricating transition metal sulfides on fluorine doped tin oxide (FTO) as efficient counter electrodes in iodine/iodide based solar cells has been demonstrated. Conversion efficiencies of 7.01% and 6.50% were obtained for nickel and cobalt sulfides, respectively, comparable to the conventional thermally platinised FTO electrodes (7.32%). A comparable charge transfer resistance of Ni(3)S(2) and Co(8.4)S(8) to conventional Pt was found to be a key factor for such high efficiencies. Cyclic voltammetry, Kelvin probe microscopy, Electrochemical Impedance Spectroscopy, and Tafel polarization were performed to study the underlying reasons behind such efficient counter electrode performance.

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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Phys Chem Chem Phys Asunto de la revista: BIOFISICA / QUIMICA Año: 2011 Tipo del documento: Article Pais de publicación: Reino Unido

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