Confined Acoustic Phonon in CdS1-xSex Nanoparticles in Borosilicate Glass

TL;DR

This paper models low-frequency Raman scattering from confined acoustic phonons in CdS1-xSex nanoparticles within borosilicate glass, showing size-dependent electron-phonon interactions and matching experimental spectra.

Contribution

It introduces a third-order perturbation theory approach to calculate Raman scattering in nanoparticles, incorporating deformation potential approximation for electron-phonon interactions.

Findings

Raman scattering increases as nanoparticle size decreases

Calculated spectra agree well with experimental data

Electron-phonon interaction strength varies with nanoparticle size

Abstract

We calculate low-frequency Raman scattering from the confined acoustic phonon modes of CdS1-xSex nanoparticles embedded in borosilicate glass. The calculation of the Raman scattering by acoustic phonons in nanoparticles has been performed by using third-order perturbation theory. The deformation potential approximation is used to describe the electronphonon interaction. The Raman-Brillouin electronic density and the electron-phonon interaction are found to increases with decreasing size of nanoparticle. A good agreement between the calculated and reported low-frequency Raman spectra is found.