Spray deposited copper zinc tin sulphide (Cu2ZnSnS4) film as a counter electrode in dye sensitized solar cells

Sanjay Kumar Swami, Neha Chaturvedi, Anuj Kumar, Nikhil Chander, Viresh Dutta, D. Kishore Kumar, A. Ivaturi, S. Senthilarasu, Hari M. Upadhyaya

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Abstract

Stoichiometric thin films of Cu2ZnSnS4 (CZTS) were deposited by the spray technique on a FTO coated glass substrate, with post-annealing in a H2S environment to improve the film properties. CZTS films were used as a counter electrode (CE) in Dye-Sensitized Solar Cells (DSCs) with N719 dye and an iodine electrolyte. The DSC of 0.25 cm2 area using a CE of CZTS film annealed in a H2S environment under AM 1.5G illumination (100 mW cm-2) exhibited a short circuit current density (JSC) = 18.63 mA cm-2, an open circuit voltage (VOC) = 0.65 V and a fill factor (FF) = 0.53, resulting in an overall power conversion efficiency (PCE) = 6.4%. While the DSC using as deposited CZTS film as a CE showed the PCE = 3.7% with JSC = 13.38 mA cm-2, VOC = 0.57 V and FF = 0.48. Thus, the spray deposited CZTS films can play an important role as a CE in the large area DSC fabrication.

Original languageEnglish
Pages (from-to)23993-23999
Number of pages7
JournalPhysical Chemistry Chemical Physics
Volume16
Issue number43
DOIs
Publication statusPublished - 21 Nov 2014

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    Swami, S. K., Chaturvedi, N., Kumar, A., Chander, N., Dutta, V., Kumar, D. K., ... Upadhyaya, H. M. (2014). Spray deposited copper zinc tin sulphide (Cu2ZnSnS4) film as a counter electrode in dye sensitized solar cells. Physical Chemistry Chemical Physics, 16(43), 23993-23999. https://doi.org/10.1039/c4cp03312d