Influence of high vacuum annealing treatment on some properties of carbon nanotubes

被引：20
作者：
Kowalska, E.
Kowalczyk, P.
Radomska, J.
Czerwosz, E.
Wronka, H.
Bystrzejewski, M.
机构：
[1] Ind Inst Elect, PL-00241 Warsaw, Poland
[2] Univ Lodz, Dept Solid State Phys, PL-90236 Lodz, Poland
[3] Univ Warsaw, Dept Chem, PL-02093 Warsaw, Poland
来源：
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY | 2006年 / 86卷 / 01期
关键词：
carbon nanotubes; electron field emission; structural defects; thermogravimetry; topological defects;
D O I：
10.1007/s10973-006-7585-3
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
Carbon nanotubes (CNTs) were synthesized using a chemical vapour deposition (CVD) method. The properties of CNTs before and after vacuum annealing treatment were studied using scanning electron microscopy (SEM), scanning tunneling microscopy/spectroscopy (STM/STS) and thermogravimetric analysis (TG). Field emission characteristics of the raw and vacuum heated (up to 650 degrees C) carbon nanotube films (CNTFs) were measured in a diode system. Emissive properties of the CNTFs depend on an annealing process during which structural changes in the nanotube walls take place. The structural changes, related to saturation of dangling bonds, influence a rate of oxidation process and also improve the emissive field properties.
引用
收藏
页码：115 / 119
页数：5
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