Electronic structure and band gap composition-dependence of the II-VI quaternary alloys

1996/12/05 by Aljure García, Garcia, A. E., A. Zepeda-Navratil +6
Engineering · Materials Science · #Advanced Semiconductor Detectors and Materials #Chalcogenide Semiconductor Thin Films #FOS: Physical sciences #Materials Science (cond-mat.mtrl-sci) #Quantum Dots Synthesis And Properties

paper · pdf · doi:10.48550/arxiv.cond-mat/9612051

openalex publication_date 1996/12/05 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28

Abstract

Based on a successful description of II-VI ternary alloys, which introduces an empirical bowing parameter to the widely used virtual crystal approximation, we set up a tight-binding Hamiltonian to describe the Zn_1-yCd_ySe_1-xTe_x and Zn_.9Cd_.1S_.07Se_.93 quaternary alloys. We just use a formula that can be thought as a straightforward generalization of the virtual crystal approximation for this case. Our Hamiltonians reproduce very well the change in the band gap value with the composition observed in recent experimental reports.

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