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.
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We would like to thank Dr. Jian-Lin Li for valuable discussion.
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Zhang, ZC., Zhang, QX. Raman scattering from surface optical phonon mode in gallium phosphide nanomaterials. J Nanopart Res 12, 961–966 (2010). https://doi.org/10.1007/s11051-009-9646-6
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DOI: https://doi.org/10.1007/s11051-009-9646-6