Large-scale growth of In₂O₃nanowires and their optical properties

Abstract

Large-scale single-crystalline In2O3 nanowires were successfully synthesized by a simple physical evaporation method at 950 °C. The as-synthesized products, characterized by XRD, SEM and TEM, are pure, structurally uniform and single crystalline with typical diameters of 10–100 nm and lengths of up to a few hundreds of micrometres. Two strong and wide violet emission bands centred at 388 and 401 nm are observed in the room-temperature photoluminescence measurements and their mechanism is discussed.