Preparation of Cu2ZnSnS4 thin films by using electrospray method: Experimental and modeling approach on film growth

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Cu2ZnSnS4 (CZTS) thin films were deposited on glass substrate by using an electrospray method and an annealing process for improving the crystallinity and the morphology of the prepared films was performed. To investigate the relationship between the volume of a droplet on the substrate and the area of the deposited film, a numerical study on the wetting properties was performed for the first time in electrospray research, so a mathematical model to predict the shape of the droplet on the substrate with respect to temperature was developed. According to the simulation results, the deposition area by the single droplet was accurately predicted compared with the experimental data. In addition to the numerical approach, the properties of the films were experimentally analyzed. Consequently, the film with the best crystallinity, was synthesized by 60 min electrospraying deposition and followed by the annealing at 663 K. This film showed an optical band gap of 1.55 eV. Thus, both experimental and modeling analysis will suggest a new process to produce inorganic thin films. (C) 2013 Elsevier B. V. All rights reserved.
Publisher
ELSEVIER SCIENCE SA
Issue Date
2013-08
Language
English
Article Type
Article
Keywords

SOLAR-CELLS; ELECTROSTATIC SPRAY; OPTICAL-PROPERTIES; CONTACT-ANGLE; DEPOSITION; DROPLETS; FABRICATION

Citation

JOURNAL OF ALLOYS AND COMPOUNDS, v.567, pp.89 - 96

ISSN
0925-8388
DOI
10.1016/j.jallcom.2013.03.025
URI
http://hdl.handle.net/10203/173992
Appears in Collection
CBE-Journal Papers(저널논문)CE-Journal Papers(저널논문)
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