Effect of Nanoscale Surface Roughness and Electron–Phonon Interaction on Vibrational Modes of Cadmium Telluride Using Resonant Raman Spectroscopy
Carlos Israel Medel Ruiz,
Roger Chiu,
Francisco Javier Casillas Rodríguez
et al.
Abstract:This study investigates the combined effects of nanoscale surface roughness and electron–phonon interaction on the vibrational modes of cadmium telluride (CdTe) using resonant Raman spectroscopy. Raman spectra simulations aided in identifying the active phonon modes and their dependence on roughness. Our results reveal that increasing surface roughness leads to an asymmetric line shape in the first-order longitudinal optical (1LO) phonon mode, attributed to an increase in the electron–phonon interaction. This … Show more
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