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Raman scattering from surface optical phonon mode in gallium phosphide nanomaterials

Zhang, Zhao-Chun and Zhang, Qi-Xian (2010) Raman scattering from surface optical phonon mode in gallium phosphide nanomaterials. Journal of Nanoparticle Research, 12 (3). pp. 961-966.

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Abstract

The Raman scattering from gallium phosphide (GaP) nanoparticles (~53 nm) and nanosolids has been investigated. By means of Lorentzian fitting of the Raman scattering spectra, a surface optical phonon (SO) peak located between the transverse optical (TO) phonon and longitudinal optical (LO) phonon frequencies became observable. It has been proved by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS) that a core-shell heterostructure is characteristic of the structure of GaP nanoparticles. According to electromagnetic theory, the SO frequency of the piezoelectric/semiconductor heterostructural nanomaterials was calculated.

Item Type:Article
ID Code:8463
Deposited By:Prof. Alexey Ivanov
Deposited On:05 Dec 2010 20:31
Last Modified:06 Dec 2010 11:26

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