The Study of Optimizing Growth Conditions for Improving Field Emission Property of Wi18O49 Nanorod Arrays

摘要

Large-area tungsten oxide nanorod arrays were synthesized by the catalyst-free tungsten hotfilament thermal vapor method. The diameter, height, interval and alignment of the nanorods were all found to be sensitive to the distance between hot filament and substrates. And the field emission property of the nanorod arrays prepared at various distances was shown to be significantly different. This demonstrates that optimal conditions can be found for preparing W18O49 nanorod arrays of better field emission property.