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- W4322488968 abstract "Abstract First-principle calculations were used to investigate the structural, optoelectronic, elastic and thermodynamic properties of Br-doped CsPbI3 perovskite material using GGA-PBE, SCAN, and LDA functionals. The computed lattice parameters are consistent with the experimental and theoretical calculations, reported in the literature. The band structure along with the electronic density of states indicated that CsPbI3-xBrx (x = 0, 1, 2, 3) materials are semiconductors with direct band gaps, as projected using the three functionals. The energy band gap of CsPbI3 was tuned by replacing I ions with Br ions, resulting in CsPbI2Br, CsPbBr2I, and CsPbBr3 materials. These perovskite materials were found to be mechanically stable, ductile in nature and elastically anisotropic. The results of optical parameters such as absorption coefficients, refractive index, optical conductivity, optical reflectivity, electron energy loss, and extinction coefficients were calculated and analysed. The thermodynamic parameters including heat capacity, and Debye temperature were calculated. The direct band gap and energy-dependent optical parameters especially the absorption coefficient in the infrared and visible region of these perovskites’ materials suggest that they might be candidates for potential use in photovoltaic solar cells and optoelectronic applications." @default.
- W4322488968 created "2023-02-28" @default.
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- W4322488968 date "2023-02-27" @default.
- W4322488968 modified "2023-10-16" @default.
- W4322488968 title "Density Functional Theory Study of Br Doped CsPbI3 Perovskite for Photovoltaic and Optoelectronic Applications" @default.
- W4322488968 doi "https://doi.org/10.1088/1402-4896/acbf88" @default.
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