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CuS Thin Films Obtained by Spray Pyrolysis

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Author(s): Horea Iustin NAŞCU | Violeta POPESCU

Journal: Leonardo Electronic Journal of Practices and Technologies
ISSN 1583-1078

Volume: 3;
Issue: 4;
Start page: 22;
Date: 2004;
Original page

Keywords: copper sulphide | spray pyrolysis | thin films | solar control coatings

ABSTRACT
The paper presents a study concerning the influence of deposition parameters (reagents, electron donors, surfactants, temperature of the substrate, number of consecutive layers, spraying rate) on the quality of CuS thin films achieved by spray pyrolysis on glass substrate, from solutions containing CuCl2·2H2O, thiourea, electron pair donors and surfactants. As electron pairs donors ammonia and triethanolamine were used and as surfactants C12 - C14 ether-sulphate, sodium lauryl-sulphate and cetyl-pyridinium bromide were used. The optimum conditions for the obtaining of optically clear, compact and adherent CuS thin films, showing different colors in reflected light (violet, yellow, brawn, green) and exhibiting in VIS and NIR light appropriate reflectance and transmittance for utilization for solar control applications were established. The film thickness falls in the range 10- 50 nm.
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