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Buffiere, M., Brammertz, G., El Mel, A.-A., Barreau, N., Meuris, M. & Poortmans, J. (2017) Effect of ammonium sulfide treatments on the surface properties of Cu2ZnSnSe4 thin films. Thin Solid Films, 633 135–140. 
Added by: Richard Baschera (2017-07-27 07:30:18)   Last edited by: Richard Baschera (2017-07-27 07:31:54)
Type de référence: Article
DOI: 10.1016/j.tsf.2016.09.011
Numéro d'identification (ISBN etc.): 0040-6090
Clé BibTeX: Buffiere2017
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Créateurs: Barreau, Brammertz, Buffiere, El Mel, Meuris, Poortmans
Collection: Thin Solid Films
Consultations : 14/571
Indice de consultation : 4%
Indice de popularité : 1%
In this contribution, we report on the impact of ammonium sulfide ((NH4)(2)S-x) chemical treatments done at room temperature on the surface properties of Cu2ZnSnSe4 (CZTSe) thin film. The first approach is based on the immersion of the absorber layer in a (NH4)(2)S-x solution (20 wt.%). This method results in the preferential etching of Se, Sn and Zn atoms from the absorber surface. After a treatment time of 1 min, the performances of the solar cells are found to be improved. The second approach consists in the exposure of the CZTSe layer to ammonium sulfide vapors. In this case, it was found that the progressive sulfurization of the surface of the absorber leads to the decomposition of the CZTSe phase into Sn(S,Se)(x) and Se-0 secondary phases. As a consequence, the short circuit current of the corresponding solar cells is reduced. (C) 2016 Elsevier B.V. All rights reserved.
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