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Collective effects and optical characteristics of CdSexTe1-x

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Abstract Collective effects and some response characteristics such as piezoelectric stress and strain constants, Frohlich coupling parameter, optical electronegativity and exciton properties of CdSexTe1-x common-cation ternary alloys have been investigated.… Click to show full abstract

Abstract Collective effects and some response characteristics such as piezoelectric stress and strain constants, Frohlich coupling parameter, optical electronegativity and exciton properties of CdSexTe1-x common-cation ternary alloys have been investigated. The calculations are carried out using a pseudopotential approach under a modified virtual crystal approximation that takes into account the alloy disorder effect, combined with the Adachi model. Generally, a good accord is obtained between our results and those available in the literature. The composition dependence of the features of interest shows that the Frohlich coupling parameter remains almost constant, the piezoelectric properties vary almost linearly and the optical properties exhibit a non-linear behavior.

Keywords: effects optical; collective effects; optical characteristics; characteristics cdsexte1

Journal Title: Optik
Year Published: 2020

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