TITLE

In situ passivation and blue luminescence of silicon clusters using a cluster beam/H2O codeposition production method

AUTHOR(S)
Brewer, A.; von Haeften, K.
PUB. DATE
June 2009
SOURCE
Applied Physics Letters;6/29/2009, Vol. 94 Issue 26, p261102
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Si clusters are produced in a gas aggregation source and fly through ultrahigh vacuum onto a cold target where they are codeposited with water vapor. Melting of the ice yields immediately a suspension of nanoparticles that emits intense, nondegrading luminescence in the blue wavelength range. Spectroscopic analysis reveals a Si/SiO core-shell structure where the luminescence stems from oxygen deficient defects. The main advantage of our production method is that it yields the luminescent Si nanoparticles in one step.
ACCESSION #
42961964

 

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