TITLE

Sharp photoluminescence of CdS nanocrystals in Al[sub 2]O[sub 3] matrices formed by sequential ion implantation

AUTHOR(S)
Ando, M.; Kanemitsu, Y.; Kushida, T.; Matsuda, K.; Saiki, T.; White, C. W.
PUB. DATE
July 2001
SOURCE
Applied Physics Letters;7/23/2001, Vol. 79 Issue 4
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on photoluminescence (PL) experiments in CdS nanocrystals fabricated by sequential ion implantation in Al[sub 2]O[sub 3] matrices. The PL spectrum and the spatial image of the PL intensity have been studied at 8 K using a scanning near-field optical microscope. The PL spectrum at each bright spot has been found to consist of narrow lines of various energies, although the spectrum measured by conventional optics shows a single and broad band locating below the free-exciton absorption energy. The origin of the sharp PL lines in CdS nanocrystals will be discussed. © 2001 American Institute of Physics.
ACCESSION #
4825979

 

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