A study into the optoelectronic property of Bi2+δCr(TM)O6+X (TM = Fe, Mn) on prospective of photovoltaic application

P, Vikas N, Srivastava, Ravi P., Roy, Amritendu

ISES Solar World Congress 2025 · Fortaleza, Brazil · 2025-11-03
Published by International Solar Energy Society (ISES)

Abstract

Here, we synthesized Bi2+δCr TM O6+X (TM = Fe, Mn) thin films on fluorine-doped tin oxide (FTO) coated glass substrate by spin coating. Bi2+δCrFeO6+X (BCFO) and Bi2+δCrMnO6+X (BCMO) thin films exhibit a monoclinic crystal structure with an indirect band gap of 1.34 eV and 1.43 eV, respectively, exhibiting a significant reduction in the band gap in contrast to single perovskite oxides such as BiFeO3, BiCrO3, and BiMnO3. Furthermore, solar cells (SCs) were fabricated with suitable hole- and electron- transfer layers based on band alignment. Albeit small, both BCFO and BCMO based SCs show photovoltaic (PV) conversion efficiencies, 0.09 % and 0.24 %, respectively.

Keywords

Perovskite Solar Cells, BCFO, BCMO, Double-perovskites.

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