Volume 256, Issue 11 1900131
Original Paper

First-Principles Calculations to Investigate the Refractive Index and Optical Dielectric Constant of Na3SbX4 (X = S, Se) Ternary Chalcogenides

Y. Al-Douri

Corresponding Author

Y. Al-Douri

University Research Center, Cihan University Sulaimaniya, Sulaymaniyah 46002, Iraq

Nanotechnology and Catalysis Research Center (NANOCAT), University of Malaya, 50603 Kuala Lumpur, Malaysia

Department of Mechatronics Engineering, Faculty of Engineering and Natural Sciences, Bahcesehir University, 34349 Besiktas, Istanbul, Turkey

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M. Ameri

M. Ameri

Laboratoire Physico-Chimie des Matériaux Avancés (LPCMA), Université Djilali Liabès de Sidi Bel-Abbès, Sidi Bel-Abbès 22000, Algeria

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A. Bouhemadou

A. Bouhemadou

Laboratory for Developing New Materials and Their Characterization, University of Setif 1, 19000 Setif, Algeria

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Khalid M. Batoo

Khalid M. Batoo

King Abdullah Institute for Nanotechnology, King Saud University, P.O. Box 2455, Riyadh 1145, Kingdom of Saudi Arabia

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First published: 04 June 2019
Citations: 119

Abstract

Ternary chalcogenides are promising candidate for visible light absorber as they have excellent optoelectronic properties. The ternary chalcogenides Na3SbX4 (X = S, Se) are investigated by using first-principles calculations based on density functional theory (DFT). These chalcogenides have direct bandgap. The upper valence bands are predominantly composed of S or Se p-orbitals and lower conduction bands consist of hybridization between Sb and S or Se p-orbitals electrons. The optical absorption is investigated by calculating dielectric functions, refractive index, and optical dielectric constant. Our results of electronic and optical properties suggest potential of superionic conductors and energy storage applications.

Conflict of Interest

The authors declare no conflict of interest.

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