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Effect of cation ratios and monoethanolamine on the morphology of solution processed Cu2ZnSnS4 films

Published online by Cambridge University Press:  02 April 2019

Jitendra Kumar  and
Sarang Ingole
Jitendra Kumar
Affiliation:
Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India
Sarang Ingole*
Affiliation:
Department of Materials Science and Engineering, Indian Institute of Technology Kanpur, Kanpur-208016, India
*
*(Email: [email protected])
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Abstract

Thin films of Cu2ZnSnS4 have been synthesized through solution chemistry. The correlation between film morphology and the ratio of cations (copper, zinc and tin) and the amount of monoethanolamine (MEA) in solution has been investigated. The stoichiometric ratio of cations resulted in films comprised of fine grains (∼165 nm) with large crystals (∼ 1 − 2μm) spread over its surface. The films corresponding to copper poor and zinc rich solutions were comprised of grains having uniform size (∼300 nm). The addition of MEA to precursor solutions resulted in a significant drop of pinholes in the films, however, at the same time grain size decreases to 50 − 200 nm range depending on the amount of MEA present in the precursor solution.

Keywords

thin filmsolution depositionmorphologygrain size
Type
Articles
Information
MRS Advances , Volume 4 , Issue 16: Energy-Transfer, Storage and Conversion , 2019 , pp. 945 - 951
Copyright
Copyright © Materials Research Society 2019 

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