標題: Novel selective process via self-assembled monolayers for pattern growth of carbon nanotubes
作者: Kuo, DS
Chen, PL
Kuo, CT
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: nanotubes;plasma chemical vapor deposition;reactive ion etching;catalytic processes
公開日期: 1-四月-2004
摘要: In this study, a novel IC compatible deposition process to fabricate the CNTs pattern with tunable tube number density was successfully developed by using the liquid chemical technologies of self-assembled monolayers (SAMs) and the Fe-assisted CNTs growth. The tube number density could be controlled by changing the SAMs formation and post processing parameters. The Si wafers with the a:Si/Si3N4 layer patterns were first prepared by low pressure chemical vapor deposition (LPCVD) and lithography techniques to act as the substrates for selective deposition of SAMs. The selectivity of SAMs from APTMS solution (N-(2-aminoethyl)-3-aminopropyltrimethoxsilane) is based on its greater reactivity of head group on a:Si than SO, films. The areas of pattern with SAMs will first chelate the Fe3+ ions by their diamine-terminated group. The Fe3+ ions were then consolidated to become Fe-hydroxides in NaBH, Solution to form the Fe-hydroxides pattern. Finally, the Fe-hydroxides pattern was pretreated in H plasma, and followed by CNTs deposition using Fe as catalyst in a microwave plasma-chemical vapor deposition (MPCVD) system to become the CNTs pattern. The products in each processing step, including SAMs, Fe-hydroxides and CNTs, were characterized by contact angle measurements, scanning electron microscopy (SEM), Raman, XPS and Auger spectroscopy. The results show that the main process parameters include the surface activation process and its atmosphere, consolidation time and temperature, H plasma pretreatment. The function of each processing step will be discussed. (C) 2004 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.diamond.2004.01.003
http://hdl.handle.net/11536/26926
ISSN: 0925-9635
DOI: 10.1016/j.diamond.2004.01.003
期刊: DIAMOND AND RELATED MATERIALS
Volume: 13
Issue: 4-8
起始頁: 1222
結束頁: 1227
顯示於類別:會議論文


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