Keywords: Photoluminescence, Perovskite, Effect of the TiO2–ZnO Heterostructure on the Photoinduced Hydrophilic Conversion of TiO2 and ZnO Surfaces,Bi3+ Heterovalent Doping in CsPbBr3 Halide Perovskite; Photoelectrochemical Behavior of Al-Doped TiO2; nanoparticles for energy storage applications
