標題: | One-step growth process of carbon nanofiber bundle-ended nanocone structure by microwave plasma chemical vapor deposition |
作者: | Teng, I. J. Chuang, P. K. Kuo, C. T. 材料科學與工程學系 Department of Materials Science and Engineering |
關鍵字: | carbon nanofibers (CNFs);carbon nanocones (CNCs);microwave plasma chemical vapor deposition (MPCVD);field emission;growth mechanism |
公開日期: | 1-十一月-2006 |
摘要: | In this work, we report a simple one-step growth process to synthesize a novel and distinct carbon nanostructure, called a carbon nanofiber bundle-ended nanocone (CNFNC) structure, by using microwave plasma chemical vapor deposition (MPCVD) method with CH4 and H, as source gases and Fe catalyst. The nanostructures and their properties after each processing step were characterized by FESEM, HRTEM, ED, AES, and Raman spectroscopy. The preliminary results have demonstrated that the CNFNC structures exhibit excellent field emission properties. The results also show that the favored conditions to form the CNFNC structures include a combination of lower CH4/H-2 flow ratio, higher substrate negative bias, and proper working pressure and deposition time. The possible growth mechanism of the CNFNC structures is proposed. (c) 2006 Elsevier B.V. All rights reserved. |
URI: | http://dx.doi.org/10.1016/j.diamond.2006.07.011 http://hdl.handle.net/11536/11646 |
ISSN: | 0925-9635 |
DOI: | 10.1016/j.diamond.2006.07.011 |
期刊: | DIAMOND AND RELATED MATERIALS |
Volume: | 15 |
Issue: | 11-12 |
起始頁: | 1849 |
結束頁: | 1854 |
顯示於類別: | 會議論文 |