Electron field emission from multiwalled nanotubes

被引：0
|
作者：
Sveningsson, M [1 ]
Morjan, R [1 ]
Nerushev, O [1 ]
Svensson, K [1 ]
Olsson, E [1 ]
Campbell, EEB [1 ]
机构：
[1] Univ Gothenburg, Sch Phys & Engn Phys, SE-41296 Gothenburg, Sweden
来源：
FULLERENES AND NANOTUBES: THE BUILDING BLOCKS OF NEXT GENERATION NANODEVICES | 2003年 / 2003卷 / 15期
关键词：
D O I：
暂无
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Bulk films of aligned multiwalled nanotubes (MWNT) produced by both thermal CVD and plasma CVD have been investigated for their field emission properties. The turn-on and threshold fields are significantly lower for the thermal CVD films but the emission is less stable. Light emission is seen for high current densities that is related to ohmic heating of the tubes. This is more important for the thermal CVD samples. Individual MWNT have been studied using a combination of STM/TEM. Evidence for ohmic heating is again seen and the differences between the various investigated samples can be explained with a simple 1D heat equation model.
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页码：340 / 345
页数：6
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