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Browse Journals & Magazines > Applied Physics Letters ...> Volume:81 Issue:6 Help

Microstructure of surface layers in Cu(In,Ga)Se2 thin films

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7 Author(s)
Yan, Y. ; National Renewable Energy Laboratory, Golden, Colorado 80401 ; Jones, K.M. ; AbuShama, J. ; Young, M.
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Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.1498499 

In most Cu(In,Ga)Se2 thin films used for solar cells, there usually exist interfaces lying about 0.1 to 0.2 μm below surfaces. We report on convergent-beam electron diffraction and energy-dispersive x-ray spectroscopy study of the microstructure and chemical composition of the surface region in Cu(In,Ga)Se2 thin films. We find that the surface region and the bulk are structurally similar, with no ordered defect chalcopyrite structure observed. However, their composition is slightly different, indicating that they can have different point defect physics. Our results suggest that the subinterfaces and the bulk absorber may form homojunctions. © 2002 American Institute of Physics.

Published in:
Applied Physics Letters  (Volume:81 ,  Issue: 6 )

Date of Publication: Aug 2002

Page(s):
1008 - 1010
ISSN :
0003-6951
Digital Object Identifier :
10.1063/1.1498499
Date of Current Version :
18 June 2009
Issue Date :
Aug 2002

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