Cu depletion at the CuInSe[sub 2] surface

Liao, Dongxiang; Rockett, Angus
April 2003
Applied Physics Letters;4/28/2003, Vol. 82 Issue 17, p2829
Academic Journal
The chemical composition of the (112)B surface of epitaxial CuInSe[SUB2] thin films is investigated by angle resolved x-ray photoelectron spectroscopy. Results show that a severe Cu depletion exists in the top 1-2 atomic layers. No bulk second phase is found at the surface. The source of this depletion and its relation to the Cd doping at the CdS/CuInSe[SUB2] interface are discussed.


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