Journal
NANOTECHNOLOGY
Volume 17, Issue 12, Pages 3058-3062Publisher
IOP PUBLISHING LTD
DOI: 10.1088/0957-4484/17/12/041
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In2O3 nanostructures such as aligned nanocolumn arrays, nanowires and nanopyramids were fabricated using a simple physical evaporation technique. Nanocolumn arrays and the nanowires were produced using an Au catalysed vapour - liquid - solid (VLS) technique and the nanopyramid structures were prepared using a non-catalytic approach. Field-emission studies revealed that the morphologies of these In2O3 nanoforms have considerable effects on the field-emission properties. Among these nanoforms, nanocolumn arrays have the lowest turn-on voltage and the highest field enhancement factor. The results indicated that the In2O3 nanoforms could be used as cathode materials for the fabrication of devices based on field-emission properties.
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