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

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

Authors

Sanjay Kumar Swami

Neha Chaturvedi

Anuj Kumar

Nikhil Chander

Viresh Dutta

D. Kishore Kumar

A. Ivaturi

Hari M. Upadhyaya



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.

Journal Article Type Article
Acceptance Date Sep 29, 2014
Online Publication Date Oct 6, 2014
Publication Date Nov 21, 2014
Deposit Date Mar 14, 2023
Print ISSN 1463-9076
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 16
Issue 43
Pages 23993-23999
DOI https://doi.org/10.1039/C4CP03312D
Keywords CZTS, Spray Process, Sulphurisation, Dye Sensitized Solar Cell