Investigation of the Optoelectronic Characteristics of Lead-free SrGaF3 Perovskite in the Context of Density Functional Theory

• Published in: 2024 3rd International Conference on Advancement in Electrical and Electronic Engineering (ICAEEE) pp. 1 - 6
• Main Authors: Fatema-Tuz-Zahra, Hossen, Md. Bokhtiar
• Format: Conference Proceeding
• Language: English
• Published: IEEE 25.04.2024
• Subjects: Absorption; Density functional theory; Discrete Fourier transforms; elastic constants; electronic properties; Integrated optics; optical properties; Optoelectronic devices; Perovskites; Photonic band gap; Photovoltaic cells
• DOI: 10.1109/ICAEEE62219.2024.10561819

Investigating the characteristics and possible applications of SrGaF 3 is the goal of this study. In order to perform this, the structural, optical, and electrical characteristics of the SrGaF 3 perovskites were assessed using the density functional theory (DFT) approach within the CASTEP software. The computed tolerance factor and formation enthalpy verify the chemical and thermodynamic stability of SrGaF 3 , which was established by structural analysis. SrGaF 3 has been determined to be an indirect band gap semiconductor with a band gap energy of 0.259 electron volts (eV) based on the examination of the electronic band structure. The reported band gap was validated by the density of states of the SrGaF 3 perovskite structure. The structure is ductile and has good mechanical properties, according to the compound's mechanical parameters, which include bulk modulus, Young's modulus, and Poisson's ratio. SrGaF 3 has a greater absorption coefficient, dielectric function, and reflectivity, according to an analysis of its optical characteristics. Its suitability for use in optoelectronic devices is determined to a large extent by these features. The results of the DFT analysis indicate that SrGaF 3 has a band gap that falls within the range of semiconductors. Its attractive optical properties make it an excellent choice for use in optoelectronic applications such as solar cells.