Direct synthesis of single crystalline In2O3 nanopyramids and nanocolumns and their photoluminescence properties

Guha, P.; Kar, S.; Chaudhuri, S.
October 2004
Applied Physics Letters;10/25/2004, Vol. 85 Issue 17, p3851
Academic Journal
Single crystalline indium oxide pyramid and column structures were synthesized by a simple physical evaporation technique. The pyramid structure was obtained without any catalytic action while the column structure was produced using gold as the catalyst. The nanostructures were characterized by x-ray diffraction, scanning electron microscopy and transmission electron microscopy. A blue-green photoluminescence band in the visible region was observed in the In2O3 structures which could be ascribed to the existence of a large amount of singly ionized oxygen vacancies, confirmed by electron paramagnetic resonance.


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