CdTe Raman Line Shape in Resonance: a Space Correlation Zone Study

Molina-Contreras, J.R.; Frausto-Reyes, C.; Medel-Ruíz, C.I.; Pérez Ladrón de Guevara, H.

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Title	CdTe Raman Line Shape in Resonance: a Space Correlation Zone Study
Authors	Molina-Contreras, J.R. Frausto-Reyes, C. Medel-Ruíz, C.I. Pérez Ladrón de Guevara, H.
ORCID
Keywords	Roughness Raman Spectroscopy Acoustic Transverse Phonons Size Grain
Type	Conference Papers
Date of Issue	2015
URI	http://essuir.sumdu.edu.ua/handle/123456789/42800
Publisher	Sumy State University
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Citation	CdTe Raman Line Shape in Resonance: a Space Correlation Zone Study [Текст] / J.R. Molina-Contreras, C. Frausto-Reyes, C.I. Medel-Ruiz, de Guevara H.P. Ladron // Nanomaterials: Applications & Properties (NAP-2015) : Proceedings of the International Conference. — Sumy : Sumy State University, 2015. — V.4, No1. — 01PCSI01.
Abstract	We show that the line shape of resonant Raman spectra of CdTe can be reproduced using the spatial correlation model (SCM). Our results show that the resonant Raman spectrum for a surface with a RMS of 430 nm is characterized by the presence of two intense sharp peaks located at frequencies corresponding to LO and 2LOmodes. The resonant Raman spectrum for a surface with a RMS of 6 nm on the other hand, can be reproduced using the contribution of high frequency phonons related with the acoustic transverse harmonics. These results suggest that under resonance conditions, such acoustic transverse modes define the line shape for a small size correlation region diameter. This study provides a new application of SCM to estimate the size grain of a surface where this information is not available.
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