Synthesis, Characterization, and Photoluminescence Properties of In₂O₃ Nanocrystals Encapsulated by Carbon Vesicles and Neat In₂O₃ Nanocrystals Generated by the RAPET Technique

Abstract

Abstract We report the synthesis of micron‐sized vesicles of carbon encapsulating In 2 O 3 nanocrystals, as well as neat In 2 O 3 nanocrystals. The thermal decomposition of In(acetate) 3 was carried out at 800 °C in air. This reaction was carried out under the autogenic pressure of indium acetate. The synthesized products were systematically characterized by X‐ray powder diffraction, scanning electron microscopy, and transmission electron microscopy. Carbon microvesicles, with an average diameter of 5 μm, encapsulated several nanometric‐sized In 2 O 3 nanocrystals, as evidenced by high resolution transmission electron microscopy. The UV/Vis absorption of In 2 O 3 nanocrystals was studied to estimate the bandgap energies. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2008)