Field emission properties of RuO2 thin film coated on carbon nanotubes |
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| Authors: | Ching-An Chen Yi-Min Chen Ji-Guang Chi Shan-Shan Lin Ying-Sheng Huang |
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| Affiliation: | Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan |
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| Abstract: | Carbon nanotubes (CNTs) have been widely applied in field emission (FE) due to their high geometric aspect ratio and low work function. More recently, researchers have introduced ruthenium dioxide (RuO2) as a field emitter because of its excellent chemical and thermal stability due to its oxide nature. This study used the surface morphology of CNTs and the field emission (FE) stability of RuO2 to improve FE characteristics. Since the work functions of CNTs and RuO2 are very close, this study combined these two elements by applying a thin film of RuO2 on the CNT surface. In the process of covering the tips of CNTs with a thin film of RuO2 eventually obtained the best matching of these two elements. The study not only enhanced the FE performance of CNTs but also extended FE lifetime by applying a thin film of RuO2 on the CNT tips. |
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| Keywords: | Carbon nanotube Ruthenium dioxide Chemical vapor deposition Field emission |
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