Open AccessInvestigation of the Substituting Effect of Se on the Physical Properties and Performances of Cd〖Se〗_x 〖Te〗_(1-x)and Zn〖Se〗_x 〖Te〗_(1-x) Materials for Semiconductor Radiation Detectors
Author(s) -
R. Malki,
A. Tebboune,
L. Ghalouci,
A. Saim,
Ahmed Hafid Belbachir
Publication year - 2021
Publication title -
revista mexicana de física/revista mexicana de física
Language(s) - English
Resource type - Journals
eISSN - 2683-2224
pISSN - 0035-001X
DOI - 10.31349/revmexfis.67.041002
Subject(s) - semiconductor , materials science , density functional theory , semiconductor detector , band gap , detector , bulk modulus , radiation , lattice (music) , lattice constant , plane wave , range (aeronautics) , condensed matter physics , atomic physics , optoelectronics , diffraction , physics , optics , quantum mechanics , acoustics , composite material
The structural and electronic properties of and semiconductor detectors at various concentrations x = 0, 0.25, 0.5, 0.75 and 1 of Selenium (Se) were determined by using the full potential-linearized augmented plane wave (FP-LAPW) based on the density functional theory (DFT). The compositional dependence of such properties was analysed and discussed. The concentration dependence of lattice parameter and bulk modulus show nonlinearity. All the investigated alloys have a direct bandgap (Γ-Γ) which decreasesnonlinearly with increase in Se concentration. On the other hand, Geant4 simulations have been performed for studying the absolute and full-energy peak detection efciencies and energy resolution at 1.5”×1.5” of these alloys as semiconductor detectors in the 511-1332 keV gamma-ray energy range. Ours findings are in a good agreement with the available theoretical and experimental data. We hope that our results serve as are reference for future theoretical and experimental researches.