摘要CeO2 nanowires are successful synthesized by hydrothermal method and their field emission (FE) properties are investigated. The turn-on electric field is 5.8V/μm at an emitter--anode spacing of 700μm. The FE current is stable and the current fluctuations are less than 3% over 5h. All the plotted Fowler--Nordheim curves yield straight lines, which are in agreement with the Fowler--Nordheim theory. The relationship between the field enhancement factor β and the emitter--anode spacing d follows a universal equation. Our results imply that the CeO2 nanowires are promising materials for fabricating FE cathodes.
Abstract：CeO2 nanowires are successful synthesized by hydrothermal method and their field emission (FE) properties are investigated. The turn-on electric field is 5.8V/μm at an emitter--anode spacing of 700μm. The FE current is stable and the current fluctuations are less than 3% over 5h. All the plotted Fowler--Nordheim curves yield straight lines, which are in agreement with the Fowler--Nordheim theory. The relationship between the field enhancement factor β and the emitter--anode spacing d follows a universal equation. Our results imply that the CeO2 nanowires are promising materials for fabricating FE cathodes.
FU Xing-Qiu;FENG Ping;WANG Chong;WANG Tai-Hong. Stable Electron Field Emission from CeO2 Nanowires by Hydrothermal Method[J]. 中国物理快报, 2007, 24(8): 2423-2425.
FU Xing-Qiu, FENG Ping, WANG Chong, WANG Tai-Hong. Stable Electron Field Emission from CeO2 Nanowires by Hydrothermal Method. Chin. Phys. Lett., 2007, 24(8): 2423-2425.
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