STRUCTURAL AND OPTICAL PROPERTIES OF THE COMPOSITE MATERIALS PREPARED BY Cd INTERCALATION IN GaSe AND GaTe SINGLE CRYSTALS

Elmira VATAVU, Liliana DMITROGLO, Dumitru UNTILĂ, Veaceslav SPRINCEAN, Mihail CARAMAN Universitatea de Stat din Moldova

Abstract

XRD, SEM morphology and diffuse Raman scattering analysis carried out for GaSe and GaTe single crystals intercalated by Cd vapor annealing, has proven the formation of GaSe and CdSe nano-cristallites containing material as well as material based on GaTe and CdTe nanosized cristallites. GaSe-CdSe and GaTe-CdTe nanocomposites exhibit photoluminescent properties in the orange-red spectral range. The photoluminescence spectra of as-prepared nanocomposites consist of a superposition of the impurity radiative bands of the composites’ components. Keywords: GaSe, GaTe, Cd, composite, XRD, Raman, Photoluminescence.