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Lepetit, T., Mangin, D., Gautron, E., Tomassini, M., Harel, S., Arzel, L. & Barreau, N. (2015) Impact of DC-power during Mo back contact sputtering on the alkali distribution in Cu(In,Ga)Se-2-based thin film solar cells. Thin Solid Films, 582 304–307. 
Added by: Laurent Cournède (2016-03-10 18:36:41)
Type de référence: Article
DOI: 10.1016/j.tsf.2014.10.004
Numéro d'identification (ISBN etc.): 0040-6090
Clé BibTeX: Lepetit2015
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Catégories: CESES
Mots-clés: Alkali, Copper indium gallium diselenide, DC-sputtering, Molybdenum, Secondary ion mass spectroscopy, Solar cells
Créateurs: Arzel, Barreau, Gautron, Harel, Lepetit, Mangin, Tomassini
Collection: Thin Solid Films
Consultations : 10/418
Indice de consultation : 2%
Indice de popularité : 0.5%
DC-sputtered Mo back contact layers were deposited on soda-lime glass (SLG) with different power densities applied on the Mo target to study its influence on the photovoltaic performance of Cu(In, Ga) Se-2-based (CIGSe) solar cell. CIGSe absorber was then deposited simultaneously on these SLG/Mo, following the 3-stage process. These devices have good but different photovoltaic performance ({>}16\% efficiency without MgF2 coating). To find a material origin, secondary ion mass spectroscopy (SIMS) profiles were carried out on complete cells, revealing that Na and K content and distribution in each layer depend on the deposition conditions of the back contact. Even before the CIGSe deposition and despite similar morphologies, Na content can vary 10-fold from one Mo layer to another. The same applies to the absorber; when grown on a different Mo they present the same grain boundary density but different alkali contents in bulk or at interfaces. This has an influence on the compositional grading in absorber, confirmed by X-ray diffraction and SIMS. (C) 2014 Elsevier B.V. All rights reserved.
Added by: Laurent Cournède  
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