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http://dx.doi.org/10.5757/JKVS.2007.16.4.291

Field emission properties of Ag-Cu-alloy coated CNT-emitters  

Lee, Seung-Youb (BK21 Physics Research, Sungkyunkwan University)
Ryul, Dong-Heon (BK21 Physics Research, Sungkyunkwan University)
Hong, Jun-Yong (BK21 Physics Research, Sungkyunkwan University)
Yeom, Min-Hyeng (BK21 Physics Research, Sungkyunkwan University)
Yang, Ji-Hoon (Research Institute of Industrial Science & Technology(RIST))
Choi, Won-Chel (Division & Center for Nanotubes and Nanostructured Composites(CNNC), Sungkyunkwan University)
Kwon, Myeng-Hoi (Department of Physics, University of Incheon)
Park, Chong-Yun (BK21 Physics Research, Sungkyunkwan University)
Publication Information
Journal of the Korean Vacuum Society / v.16, no.4, 2007 , pp. 291-297 More about this Journal
Abstract
The field emission properties of CNT-emitters coated with Ag-Cu alloy have been investigated. The vertical aligned multi-walled CNTs were synthesized by dc-plasma enhanced chemical vapor deposition (dc-PECVD) and the Ag-Cu alloy was coated by using dc-magnetron sputter. The morphology of alloy-coated and un-coated CNT-emitters was observed by using SEM and their field emission properties were also measured. Annealing the AgCu-coated CNTs at temperature more than ${\sim}700^{\circ}C$, the Ag-Cu alloy was diffused to and aggregated on the top of the CNT as a Q-tip. A significant progress on the field emission was not observed with coating Ag-Cu alloy on the CNTs, but a certain improvement in a resistance against oxygen gas was made confirmation. It seems to be due to inertness of Ag-Cu alloy on the CNTs.
Keywords
Carbon nanotube; field emission; Ag-Cu alloy;
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