Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids

Title
Optical properties and lasing of ZnO nanoparticles synthesized continuously in supercritical fluids
Authors
한노수심형섭서주희박성민민병권김재훈송재규
Keywords
ZnO; supercritical fluids
Issue Date
2011-03
Publisher
Chemical physics letters
Citation
VOL 505, NO 1-3, 51-56
Abstract
Optical properties of zinc oxide (ZnO) nanoparticles prepared in supercritical methanol and supercritical water were investigated. Interstitial zinc and oxygen vacancy were the major defects in the ZnO nanoparticles synthesized in supercritical methanol. The addition of oleic acid as a surface modifier resulted in the isolation of the nanoparticles and the removal of interstitial zinc. Lasing was observed with sharp longitudinal modes and a superlinear increase in the emission intensity of the ZnO nanowires synthesized in supercritical water. The band gap renormalization due to the electron–hole plasma induced a red-shift in the emission band, whereas the individual longitudinal modes were blue-shifted due to a change in refractive index.
URI
http://pubs.kist.re.kr/handle/201004/39618
ISSN
0009-2614
Appears in Collections:
KIST Publication > Article
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE