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Optoelectronic and transport properties of Rb/ Cs 2 TeI 6 defective perovskites for green energy applications
Author(s) -
Ali Malak Azmat,
Reshak Ali H.,
Murtaza Ghulam,
ALAnazy Murefahmana,
Althib Hind,
Flemban Tahani H.,
Bila Jiri
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6378
Subject(s) - perovskite (structure) , thermoelectric effect , materials science , figure of merit , optoelectronics , solar cell , band gap , refractive index , conductivity , dielectric , chemistry , crystallography , physics , thermodynamics
Summary Lead content in perovskite solar cells and other applications is toxic for human health and environment. Therefore, the search alternate materials are required of present era. In this article, we presented physical properties of Rb/Cs 2 TeI 6 defective perovskites for possible solar cell and thermoelectric applications. These compounds were found to be stable in perovskite structure. The band gaps were calculated in close contact to experiments. The optical properties were computed in term of dielectric function, refractive index and optical conductivity. These properties explored suitability of Rb/Cs 2 TeI 6 perovskites for solar cell applications. Also, the high figure of merit (0.687 for Rb 2 TeI 6 and 0.682 for Cs 2 TeI 6 at 1000 K) confirmed position of these compounds in family of efficient thermoelectric materials.