Combinatorial Evaluation for Field Emission Properties of Carbon Nanotubes
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- 作者：Yosuke Shiratori ; Hisashi Sugime ; Suguru Noda
- 刊名：Journal of Physical Chemistry C
- 出版年：2008
- 出版时间：November 20, 2008
- 年：2008
- 卷：112
- 期：46
- 页码：17974-17982
- 全文大小：653K
- 年卷期：v.112,no.46(November 20, 2008)
- ISSN：1932-7455
文摘
Field emission properties of carbon nanotubes (CNTs) were comparatively evaluated by using combinatorial CNT libraries. The libraries were prepared by combinatorial masked deposition of a Co catalytic layer on Al2O3/Si substrates and subsequent CNT growth by chemical vapor deposition from ethanol. Each library reproduced various types of single- and multiwalled carbon nanotubes with different morphologies and a variety of field emission properties. Combinatorial evaluations immediately identified the CNTs preferable as field emitters. The results obtained from individual field emission evaluations for samples with a constant nominal Co thickness agreed well with the results obtained from comparative evaluations for combinatorial CNT libraries. The results revealed that protrusive single-walled carbon nanotubes with a moderate interspacing showed the best field emission properties.