Evolution in shapes of a series of (111)-based In2O3 particles

In2O3 particles with different morphology were controllably synthesized on silicon substrates by thermal evaporation of In grains at 900 degrees C. The structure and morphology of the In2O3 particles were evaluated using X-ray diffraction, and scanning and transmission electron microscopies. The evolution in shapes as the ratio of {100} relative to {111} increases is clearly observed. The photoluminescence spectrum of the obtained In2O3 structures exhibits UV emission centered at about 378 nm and wide-band emission covering the green and orange regions with three peaks around 525, 572, and 604 nm.