dielectric DFT study 2 Dielectric properties 2 Energy gap 2 Perovskite 2 band gap 2 conductivity 2 optical 2 photoluminescence 2 solvent engineering 2 structural 2 AC CONDUCTIVITY 1 BA 1 BAND 1 BR 1 BiFeO3 film 1 CL 1 CRYSTAL-STRUCTURE 1 CRYSTALLIZATION 1 Capacitance 1 Capacitance measurement 1 Conductivity properties 1 Dielectric losses 1 Dielectric materials 1 Dielectric studies 1 Dielectric tangent loss 1 Dimethylformamide 1 Double perovskite 1 EFFICIENT 1 ELECTRICAL-PROPERTIES 1