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Buffiere, M., Lepetit, T., Khelifi, S. & El Mel, A.-A. (2017) Interface Engineering in CuInSe2 Solar Cells Using Ammonium Sulfide Vapors. Solar Rrl, 1 UNSP 1700067. 
Added by: Richard Baschera (2017-10-24 13:30:34)   Last edited by: Richard Baschera (2017-10-24 13:46:07)
Type de référence: Article
DOI: 10.1002/solr.201700067
Numéro d'identification (ISBN etc.): 2367-198X
Clé BibTeX: Buffiere2017a
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Créateurs: Buffiere, El Mel, Khelifi, Lepetit
Collection: Solar Rrl
Consultations : 2/384
Indice de consultation : 3%
Indice de popularité : 0.75%
We report on a novel approach to engineer the surface of Se-based chalcogenide thin films at room temperature by direct exposure to ammonium sulfide (AS) vapors, serving as a sulfur source. When applied to CuInSe2 (CISe) absorbers, the exposure to AS vapors leads to the progressive de-oxidation and sulfidization of the surface of CISe thin films. The modification of the surface chemical state results in i) an improved coverage of the absorber by the chemical bath deposited buffer layer; ii) a modification of the doping profile of the absorber; and iii) an increase in the open circuit voltage of CISe/CdS/ZnO solar cells. These results are explained according to a possible passivation of Se vacancies by sulfur atoms at the surface of the absorber, occurring as a consequence of its exposure to the AS vapors.
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