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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51632

Title: Synthesis of IrO2 nanocrystals on carbon nanotube bundle arrays and their field emission characteristics
Authors: Chen, Y. M
C. A. Chen
Y. S. Huang
K. Y. Lee
K. K. Tiong
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Field emission effect
Metal-organic chemical vapor deposition
Nanostructured materials
Oxide materials
Scanning electron microscopy
Transmission electron microscopy
Date: 2009
Issue Date: 2018-12-13T03:25:43Z
Abstract: Abstract: IrO2 nanocrystals (NCs) were deposited on patterned carbon nanotube (CNT) bundle arrays via metal-organic chemical vapor deposition (MOCVD) using (C6H7)(C8H12)Ir as a source reagent. The structural and spectroscopic properties of the IrO2/CNTs composite were characterized by field-emission scanning electron microscopy, Raman spectroscopy and transmission electron microscopy. The combined effects of the geometrical structure of IrO2/CNTs, and the natural conducting and enhanced resistance to oxidation properties of IrO2 lead to a low turn-on field of 0.9 V/μm at a current density of 0.1 μA/cm2, a low threshold field of 2.7 V/μm at a current density of 1 mA/cm2, a high field enhancement factor of 7.4 × 103, and long-term stability for the IrO2/CNTs composite. The results indicate that the IrO2/CNTs composite can be a potential candidate for field emission devices.
Relation: 487(1-2) pp.659-664
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51632
Appears in Collections:[電機工程學系] 期刊論文

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