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Han, J.-F., Liao, C., Gautron, E., Jiang, T., Xie, H.-M., Zhao, K. & Besland, M. .-P. (2014) A study of different selenium sources in the synthesis processes of chalcopyrite semiconductors. Vacuum, 105 46–51. 
Added by: Laurent Cournède (2016-03-10 21:01:55)
Type de référence: Article
DOI: 10.1016/j.vacuum.2014.02.002
Numéro d'identification (ISBN etc.): 0042-207X
Clé BibTeX: Han2014b
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Catégories: PCM
Mots-clés: cigs, Copper selenide, cu(in, cuinse2, CulnSe(2) thin films, diffraction, film solar-cells, ga)se-2, in-situ, layers, metallic precursors, selenization, tem, thin-films
Créateurs: Besland, Gautron, Han, Jiang, Liao, Xie, Zhao
Collection: Vacuum
Consultations : 12/543
Indice de consultation : 3%
Indice de popularité : 0.75%
Résumé     
In this work, we studied the selenization processes of sputtered Cu/ln stacked layers with two different kinds of Selenium (Se) sources: Se pellets (A) and an evaporated layer (B). Scanning Electron Microscope (SEM), Transmission Electron Microscope (TEM), Grazing Incidence X-Ray Diffraction (GIXRD) and Raman spectroscopy were used to characterize the selenized films. In the group A, elemental Se pellets were used to generate Se vapor and react with metallic precursors. When selenized at 270 degrees C, a large amount of Cu Se platelets exhibiting regular hexagonal or polygonal structures were observed at the film surface. After the selenization at 380 degrees C, the films were constituted of large CulnSe(2) grains with diameter in the 500 nm range. In the group B, an evaporated Se layer at the precursor surface was involved as Se source. At 270 degrees C, the film surfaces were homogeneously covered by the Cu Se wires. Energy Dispersive X-Ray Spectroscopy (EDS) and GIXRD both indicated that a Se concentration lower in the wires than that in the platelets formed in group A. At 380 degrees C, films were made of a single CulnSe(2) phase, with grain sizes in the 200-300 nm range, i.e. smaller than the grain sizes of group A. The relationships of film surface modifications during the selenization with different Se sources were discussed. (c) 2014 Elsevier Ltd. All rights reserved.
Added by: Laurent Cournède  
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