TITLE

Freestanding spherical silicon nanocrystals: A model system for studying confined excitons

AUTHOR(S)
Goller, B.; Polisski, S.; Wiggers, H.; Kovalev, D.
PUB. DATE
July 2010
SOURCE
Applied Physics Letters;7/26/2010, Vol. 97 Issue 4, p041110
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We report on the light emitting properties of freestanding hydrogen-terminated spherical silicon nanocrystals. The nanocrystals exhibit size-dependent tunable light emission properties. Many light emission properties of this system are found to be very similar to those known for other systems containing silicon nanocrystals. However, we found specific emission properties of this system ascribed to the spherical shape of silicon nanocrystals and their spatial separation. We attributed all observations to the spatial confinement of excitons within the crystalline core of the indirect band gap silicon nanocrystals.
ACCESSION #
52616477

 

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