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Post-selenization of stacked precursor layers for CIGS

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Post-selenization of stacked precursor layers for CIGS

Zs. Baji a,*, Z. Lábadi a, Gy. Molnár a, B. Pécz a, A.L. Tóth a, J. Tóth c, A. Csik c, I.

Bársony a,b 2013

a Institute of Technical Physics and Matrials Science (MFA), Research Centre for Natural Sciences, Hungarian Academy of Sciences,

P.O. Box 49, H-1525 Budapest, Hungary

b Doctoral School of Molecular- and Nanotechnologies, Faculty of Information Technology, University of Pannonia, Egyetem u.10,

H-8200 Veszprém, Hungary

c Institute of Nuclear Research of the Hungarian Academy of Sciences (ATOMKI), P.O. Box 51, H-4001 Debrecen, Hungary

In this study the possibility of the fabrication of CIGS layers from stacked precursors with selenization is examined. Different sequences of precursor layers and two different selenization methods were applied, in order to establish the optimal order of Cu, In and Ga layers in the precursor layer stack. The obtained CIGS films were studied by different micro- and surface analysis methods (TEM, SEM, EDS, XRD, SNMS, XPS). Since the evaporation of a Se layer and post-annealing does not result in a homogeneous CIGS layer, the appropriate selenization must be accomplished in Se-vapour.

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