Pulsed laser deposited LaInO 3 thin films and their photoluminescence characteristics

Photoluminescence studies of pulsed laser deposition grown LaInO3 thin films on TiO2 terminated SrTiO3 substrate showed a broad-band blue emission peaking at 412nm, which is primarily attributed to the charge transfer transitions between oxygen and indium, inter (d–f) and intra (f–f) band transitions. The results are analysed based on the mechanism of absorption and emission within the d10 levels of In3+ ions. Broadening of the photoluminescence emission is observed with reduction in size of the crystallite owing to quantum confinement effects.