Structural, electronic and optical characteristics of inorganic cubic perovskite Sr<sub>3</sub>AsI<sub>3</sub>
Avijit Ghosh, Md. Ferdous Rahman, Md. Rasidul Islam, Md. Shoriful Islam, M. Khalid Hossain, Sagar Bhattarai, Rahul Pandey, Jaya Madan, Md. Atikur Rahman, Abu Bakar Md. Ismail
Abstract
Inorganic perovskite materials have recently received significant consideration in the sector of solar technology because of their tremendous structural, optical, and electronic strengths. This research exhaustively inquired about the structural, optical, and electronic characteristics of the inorganic cubic perovskite Sr 3 AsI 3 utilizing the first-principles density-functional theory (FP-DFT). The Sr3AsI3 molecule exhibits a direct bandgap of 1.265 eV value at Γ point. According to band characteristics, this component has a strong absorption capability in the region of visibility, as demonstrated by optical parameters including dielectric functions, absorption coefficient, reflectivity, and electron loss function. It is discovered that the spikes of the dielectric constant of Sr 3 AsI 3 are visible in the photon energy range which are suitable for solar cells. As a result, the Sr 3 AsI 3 perovskite is considered suitable for the application of energy production and light management in solar cells.