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Proceedings Paper

Raman scattering from Zn/ZnO core-shell nanoparticles
Author(s): Geetika Bajaj; R. K. Soni
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Paper Abstract

We have synthesized Zn/ZnO core-shell nanoparticles by pulsed laser ablation in liquid (PLAL) media using nanosecond pulsed Nd:YAG laser. The formation of crystalline core-shell nanoparticles of varying core and shell thickness with varying SDS concentration is confirmed by HRTEM images. The optical absorption shows distinct features corresponding to ZnO exciton and Zn surface plasmon. Raman spectrum from Zn/ZnO core-shell nanoparticles shows E2(high) phonon modes of the bulk which are insensitive to the size and modes unique to the core-shell structures. Moreover, the surface optical mode is dominant feature of the nonresonant spectrum. We have also examined the wavelength dependence of the phonon modes in Zn/ZnO core-shell structure.

Paper Details

Date Published: 3 October 2008
PDF: 8 pages
Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71553B (3 October 2008); doi: 10.1117/12.814621
Show Author Affiliations
Geetika Bajaj, Indian Institute of Technology Delhi (India)
R. K. Soni, Indian Institute of Technology Delhi (India)


Published in SPIE Proceedings Vol. 7155:
Ninth International Symposium on Laser Metrology
Chenggen Quan; Anand Asundi, Editor(s)

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