Si-O-C nanotubes from pyrolyzing polycarbosilane in a mesoporous template

被引：26

作者：

Yen, HM

Jou, S ^{[1
]}

Chu, CJ

机构：

[1] Natl Taiwan Univ Sci & Technol, Grad Sch Mat Sci & Technol, Taipei 106, Taiwan

[2] Nanmat Technol Co Ltd, Kaohsiung 811, Taiwan

来源：

MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY | 2005年 / 122卷 / 03期

关键词：

anodized aluminum oxide; electron emission; nanotube; polycarbosialne;

D O I：

10.1016/j.mseb.2005.05.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Si-O-C nanotubes were produced by pyrolyzing polycarbosilane (PCS) inside cylindrical pores of anodized aluminum oxide (AAO) templates between 900 and 1100 degrees C. The diameters of these nanotubes were between 250 and 350 nm. The Si-O-C nanotubes were analyzed by SEM, TEM, EDS, FTIR and Raman spectroscopy. The nanotubes were composed of a mixture of oxycarbide glass and carbon clusters. The ratio of Si:O:C in the nanotubes was about 1:0.97:3.3. Electron emission of the Si-O-C nanotubes was investigated by the current-voltage characterization at an anode-to-specimen distance of 67 mu m. The electric field for obtaining electron emission to a current density of 10(-4) A/cm(2) from the Si-O-C nanotubes was about 7 V/mu m. (c) 2005 Elsevier B.V. All rights reserved.

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页码：240 / 245

页数：6

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