Optical constants and exciton properties of ZnxCd1-xS

Algarni, H.; Bouarissa, N.; Khan, M. Ajmal; Al-Hagan, Ola; Alhuwaymel, T.F.

doi:10.1016/j.ijleo.2019.163022

Cited by 8 publications

(1 citation statement)

References 40 publications

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“…It may be noted that the experimental values of bandgaps for binary materials ZnS, ZnSe, CdS, and CdSe are 3.73, 2.72, 2.46, and 1.68 eV, respectively [1]. By comparing with the other theoretical calculations [32][33][34][35][36] for Zn 0.5 Cd 0.5 Se and Zn 0.5 Cd 0.5 S, we found that our results are closer to the experimental findings. For Zn 0.5 Cd 0.5 Se, the VCA-based calculation gives bandgap values of 0.95 eV [32] and 2.16 eV [33], and the density functional theory (DFT) calculations predict it to be 1.03 eV showing a large deviation from the experimental value.…”

Section: Optical Propertiessupporting

confidence: 86%

A Theoretical Estimation of Optical, Vibrational and Structural Properties of II–VI Quaternary Alloy Zn0.5Cd0.5SySe1–y

Jhakal,

Sharma,

Paliwal

2023

Ukr. J. Phys.

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We present a theoretical estimation of optical, vibrational, and structural properties of II–VI semiconducting quaternary alloy Zn0.5Cd0.5SySe1−y for 0 < y < 1 giving total 10 compositions. The estimation of refractive index, elastic constants, bulk modulus, and vibrational frequencies are performed using the important input parameters provided by the empirical pseudopotential method. In this method, the bandgaps are computed, and the alloying effects are modeled through the modified virtual crystal approximation. We have computed the static refractive index, static and high-frequency dielectric constants, longitudinal and transverse optical phonon frequencies, elastic constants, bulk modulus, and cohesive energy for 10 compositions of the alloy. The results are compared to other experimental and theoretical values wherever available.

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