Influence of solvent on solution processed Cu2ZnSnS4 nanocrystals and annealing induced changes in the optical, structural properties of CZTS film

Sripan, C and Alagarasan, D and Varadharajaperumal, S and Ganesan, R and Naik, R (2020) Influence of solvent on solution processed Cu2ZnSnS4 nanocrystals and annealing induced changes in the optical, structural properties of CZTS film. In: Current Applied Physics, 20 (8). pp. 925-930.

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Abstract

The well-known quaternary Cu2ZnSnS4 (CZTS) chalcogenide thin films are playing an important role in modern technology. The CZTS nanocrystal were successfully prepared by solution method using water, ethylene glycol and ethylenediamine as different solvent. The pure phase material was used for thin film coating by thermal evaporation method. The prepared CZTS thin films were characterized by XRD, Raman spectroscopy, FESEM, XPS and FT-IR spectroscopy. The XRD and Raman spectroscopy analysis revealed the formation of polycrystalline CZTS thin film with tetragonal crystal structure after annealing at 450 °C. The oxidation state of the annealed film was studied by XPS. A direct band gap about 1.36 eV was estimated for the film from FT-IR studies, which is nearly close to the optimum value of band gap energy of CZTS materials for best solar cell efficiency. The CZTS annealed thin films are more suitable for using as a p-type absorber layer in a low-cost solar cell. © 2020 Korean Physical Society

Item Type:	Journal Article
Publication:	Current Applied Physics
Publisher:	Elsevier B.V.
Additional Information:	Copyright for this article belongs to Elsevier B.V.
Keywords:	Annealing; Copper compounds; Crystal structure; Energy gap; Ethylene; Ethylene glycol; Film preparation; Nanocrystals; Nanostructured materials; Organic solvents; Raman spectroscopy; Thermal evaporation; Thin film solar cells; Tin compounds; X ray diffraction; X ray photoelectron spectroscopy; Zinc compounds, Chalcogenide thin films; Different solvents; Low-cost solar cells; Modern technologies; Solar cell efficiencies; Solution-processed; Tetragonal crystal structure; Thermal evaporation method, Thin films
Department/Centre:	Division of Interdisciplinary Sciences > Centre for Nano Science and Engineering Division of Physical & Mathematical Sciences > Physics
Date Deposited:	10 Nov 2021 14:25
Last Modified:	10 Nov 2021 14:25
URI:	http://eprints.iisc.ac.in/id/eprint/65965

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