Abstract
An ab initio generalized gradient approximation study, plus Hubbard (U = 4.1 eV) correlation, of (La0.25Bi0.75)2FeCrO6 alloy, in the pnma structure/ferrimagnetic order of transition rare earth d-La electrons, shows an optimum optical absorption of about 103 cm−1 near an ideal bandgap around 1.52 eV, with local magnetic moments of (Cr3+, Fe3+) found to be (− 2.56, 4.14) μB, making it a promising candidate for photovoltaics and photoferroics. Tuned-gap La-Bi2FeCrO6 active layer should own enhanced light absorption and carrier mobility, could be suitable light absorbers, and should be an efficient alternative to many absorbers like wide-bandgap chalcopyrite for solar cells, failing to reach highest efficiency, or even compete with their metal–organic halide perovskite counterparts.
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