TITLE

Size-dependent interface band alignment between Si nanocrystals and lattice-matched Gd2O3

AUTHOR(S)
Afana'ev, V. V.; Badylevich, M.; Stesmans, A.; Laha, A.; Osten, H. J.; Fissel, A.
PUB. DATE
September 2009
SOURCE
Applied Physics Letters;9/7/2009, Vol. 95 Issue 10, p102107
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Silicon nanocrystals embedded in a lattice-matched Gd2O3 matrix exhibit large size-dependent bandgap widening. Measurements of photocharging spectra of these crystals indicate only a marginal variation in the photoionization threshold energy. The latter suggests that most of the confinement-induced bandgap width variation is caused by the upward shift of the Si nanocrystal conduction band bottom.
ACCESSION #
44150692

 

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