Growth and field emission of tungsten oxide nanotip arrays on ITO glass substrate |
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Authors: | Kai Huang |
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Institution: | School of Physics Science and Technology, Lanzhou University, Lanzhou 730000, China |
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Abstract: | High-density and uniformly aligned tungsten oxide nanotip arrays have been deposited by a conventional thermal evaporation on ITO glass substrates without any catalysts or additives. The temperature of substrate was 450-500 °C. It was shown that the tungsten oxide nanotips are single-crystal grown along 0 1 0] direction. For commercial applications, field emission of the tungsten oxide nanotip arrays was characterized in a poor vacuum at room temperature. The field emission behaviors are in agreement with Fowler-Nordheim theory. The turn-on field is 2.8 V μm−1 as d is 0.3 mm. The excellent field emission performances indicated that the tungsten oxide nanotip arrays grown by the present approach are a good candidate for application in vacuum microelectronic devices. |
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Keywords: | 81 07 &minus b 81 10 &minus h 79 70 +q |
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