Electron Emission Sites on Carbon Nanotubes and the Energy Spectra
Electron Emission Sites on Carbon Nanotubes and the Energy Spectra
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碳纳米管上的电子发射位点和能量谱
DOI：
10.1143/jjap.40.l1257
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发表时间：
2001
影响因子：
1.5
通讯作者：
Akihiro Takakura
中科院分区：
文献类型：
--
作者：
C. Oshima;K. Matsuda;T. Kona;Yuhta Mogami;Masashi Komaki;Y. Murata;Tetsutane Yamashita;Y. Saito;K. Hata;Akihiro Takakura
碳纳米管上的两种电子发射位点已经被澄清;一种是纳米突起，其表现出由碳六边形、五边形和可能的七边形组成的变形蜂窝结构。另一种是边缘物种或吸附物。的发射光谱显示两个特征;一个宽的主峰相比，理论曲线的基础上Fowler-Nordheim理论，和一个额外的肩膀在约0.5 eV的EF，其中观察到的功能独立的发射方向。宽的主峰可以指示在发射位点附近发生能带弯曲。
Two kinds of electron emission sites on carbon nanotubes have been clarified; one is a nanoprotrusion exhibiting deformed honeycomb structures composed of carbon hexagons,pentagons and possibly heptagons. The other is either an edged species or adsorbates. The emission spectra show two characteristic features; a broad main peak as compared with theoretical curves based on Fowler-Nordheim theory, and an additional shoulder at about 0.5 eV from EF, of which the features are observed independent of the emission direction. The broad main peak may indicate that energy band bending occurs near the emission sites.