Low-Field Emission from Iron Oxide-Filled Carbon Nanotube Arrays
CHAI Yang, YU Li-Gang, WANG Ming-Sheng, ZHANG Qi-Feng, WU Jin-Lei
Department of Electronics, Peking University, Beijing 100871
Low-Field Emission from Iron Oxide-Filled Carbon Nanotube Arrays
CHAI Yang;YU Li-Gang;WANG Ming-Sheng;ZHANG Qi-Feng;WU Jin-Lei
Department of Electronics, Peking University, Beijing 100871
关键词 ：
61.46.+w ,
79.70.+q ,
81.15.Gh
Abstract ： Arrays of multi-walled carbon nanotubes (MWCNTs) filled with iron oxide have been fabricated by a one-step route based on the pyrolysis of ferrocene under a well-chosen synthesis condition. The MWCNT arrays were observed with a scanning electron microscope, with which an energy dispersive x-ray spectrum (EDXS) was also acquired, and they are analysed by x-ray diffraction. Furthermore, individual MWCNTs were studied by using selected area electron diffraction (SAED) and the EDXS in a transmission electron microscopy observation. All the observation and analysis confirmed that the MWCNTs were filled with iron oxide. Field emission from these arrays of iron oxide-filled MWCNTs was measured and the turn-on field was determined to range from 0.83--1.01V/μm, appearing to be much lower than those of arrays of pure MWCNTs and arrays of nitrogen-doped MWCNTs fabricated in similar ways. The possible reasons of the observed low-field emission are discussed.
Key words ：
61.46.+w
79.70.+q
81.15.Gh
出版日期: 2005-04-01
:
61.46.+w
79.70.+q
(Field emission, ionization, evaporation, and desorption)
81.15.Gh
(Chemical vapor deposition (including plasma-enhanced CVD, MOCVD, ALD, etc.))
引用本文:
CHAI Yang;YU Li-Gang;WANG Ming-Sheng;ZHANG Qi-Feng;WU Jin-Lei. Low-Field Emission from Iron Oxide-Filled Carbon Nanotube Arrays[J]. 中国物理快报, 2005, 22(4): 911-914.
链接本文:
https://cpl.iphy.ac.cn/CN/
或
https://cpl.iphy.ac.cn/CN/Y2005/V22/I4/911
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2005, Vol. 22 
