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Deposition of In2S3 on Cu(In,Ga)(S,Se)2 thin film solar cell absorbers by spray ion layer gas reaction: Evidence of strong interfacial diffusion

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4 Author(s)
Bar, M. ; Department of Chemistry, University of Nevada, Las Vegas, 4505 Maryland Parkway, Las Vegas, Nevada 89154 and Solarenergieforschung (SE2), Hahn-Meitner-Institut Berlin, Glienicker Strasse 100, D-14109 Berlin, Germany ; Allsop, N. ; Lauermann, I. ; Fischer, Ch.-H.

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2717534 

Recently, Cd-free Cu(In,Ga)(S,Se)2-based “CIGSSe” thin film solar cells with a nominal In2S3 buffer layer deposited by the spray ion layer gas reaction technique resulted in photovoltaic performances comparable to that of CdS buffered references. In the past it was argued that diffusion processes across the In2S3/CIGSSe interface play a significant role for the device quality. Investigating the interface formation by using x-ray photoelectron spectroscopy, the authors were able to confirm a strong interfacial diffusion involving Cu and Na from the CIGSSe.

Published in:
Applied Physics Letters  (Volume:90 ,  Issue: 13 )

Date of Publication: Mar 2007

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