Resonant and polarized Raman scattering from single CdS/CdSe core-shell nanowires

Title
Resonant and polarized Raman scattering from single CdS/CdSe core-shell nanowires
Authors
J H KimH KimH RhoY-J Choi박재관
Keywords
Raman scattering; nanowire; optical phonon
Issue Date
2014-03
Publisher
Journal of physics D, applied physics
Citation
VOL 47, NO 13, 135104-1-135104-6
Abstract
We report Raman scattering results on single CdS/CdSe core–shell nanowires (NWs). Under resonance excitation, optical phonons of either the CdS core or the CdSe shell are selectively enhanced. Polarization-resolved Raman scattering reveals that a longitudinal optical phonon response shows a maximum when the incident laser polarization is parallel to the scattered polarization. Interestingly, an additional phonon mode is observed at 194 cm−1 when the scattered polarization is parallel to the NW long axis. We present evidence that this phonon response corresponds to the interface optical phonon localized at the core–shell interface.
URI
http://pubs.kist.re.kr/handle/201004/50215
ISSN
00223727
Appears in Collections:
KIST Publication > Article
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