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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.
Geetika Bajaj andR. K. Soni
"Raman scattering from Zn/ZnO core-shell nanoparticles", Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71553B (3 October 2008); https://doi.org/10.1117/12.814621
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Geetika Bajaj, R. K. Soni, "Raman scattering from Zn/ZnO core-shell nanoparticles," Proc. SPIE 7155, Ninth International Symposium on Laser Metrology, 71553B (3 October 2008); https://doi.org/10.1117/12.814621