TITLE

Features of nanometer scale islands on CdSe/ZnSe surfaces

AUTHOR(S)
Zhang, B. P.; Zhang, B.P.; Manh, D. D.; Manh, D.D.; Wakatsuki, K.; Watatsuki, K.; Segawa, Y.
PUB. DATE
December 2000
SOURCE
Applied Physics Letters;12/11/2000, Vol. 77 Issue 24
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We examined the early-stage (within a few hours) properties in air of nanometer scale islands formed on a CdSe/ZnSe surface. When a CdSe/ZnSe surface grown in vacuum was exposed to air, some islands were newly formed. The aspect ratio of the island was found to increase first and then decrease. A depletion zone was observed in the perimeter of the island which indicates the intermixing of ZnSe into the island. Surface analyses using Auger electron spectroscopy indicated that the island was composed mainly of oxides and the outer shell was Zn enriched and Cd depleted. This letter shows that surface oxidation plays a key role in the formation of islands on CdSe/ZnSe surfaces in atmosphere. © 2000 American Institute of Physics.
ACCESSION #
4413661

 

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