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Gautron, E., Buffiere, M., Harel, S., Assmann, L., Arzel, L., Brohan, L., Kessler, J. & Barreau, N. (2013) Microstructural characterization of chemical bath deposited and sputtered Zn(O,S) buffer layers. Thin Solid Films, 535 175–179. 
Added by: Laurent Cournède (2016-03-10 21:23:30)
Type de référence: Article
DOI: 10.1016/j.tsf.2012.10.040
Numéro d'identification (ISBN etc.): 0040-6090
Clé BibTeX: Gautron2013
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Catégories: CESES
Mots-clés: cbd, chalcopyrite, CIGSe, Cross-sectional TEM, film solar-cells, microstructure, pvd, S) buffer layer, Zn(O
Créateurs: Arzel, Assmann, Barreau, Brohan, Buffiere, Gautron, Harel, Kessler
Collection: Thin Solid Films
Consultations : 3/516
Indice de consultation : 3%
Indice de popularité : 0.75%
The present work aims at investigating the microstructure of Zn(O,S) buffer layers relative to their deposition route, namely either chemical bath deposition (CBD) or RF co-sputtering process (PVD) under pure Ar. The core of the study consists of cross-sectional transmission electron microscopy (TEM) characterization of the differently grown Zn(O,S) thin films on co-evaporated Cu(In,Ga)Se-2 (CIGSe) absorbers. It shows that the morphology of Zn(O, S) layer deposited on CIGSe using CBD process is made of a thin layer of well oriented ZnS sphalerite-(111) and/or ZnS wurtzite-(0002) planes parallel to CIGSe chalcopyrite-(112) planes at the interface with CIGSe followed by misoriented nanometer-sized ZnS crystallites in an amorphous phase. As far as (PVD)Zn(O, S) is concerned, the TEM analyses reveal two different microstructures depending on the S-content in the films: for [S]/([O]+[S])= 0.6, the buffer layer is made of ZnO zincite and ZnS wurtzite crystallites grown nearly coherently to each other, with (0002) planes nearly parallel with CIGSe-(112) planes, while for [S]/([O]+[S])= 0.3, it is made of ZnO zincite type crystals with O atoms substituted by S atoms, with (0002) planes perfectly aligned with CIGSe-(112) planes. Such microstructural differences can explain why photovoltaic performances are dependent on the Zn(O, S) buffer layer deposition route. (C) 2012 Elsevier B.V All rights reserved.
Added by: Laurent Cournède  
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