Carbon Nanotube Growth for Field Emission Display Application

The role of $NH_3$ for vertical alignment of CNTs was investigated. The direct cause of the alignment was a dense distribution of catalytic metal particles, but which was kept catalytically active during the growth process by $NH_3$. This allows a dense nucleation of the CNTs, and consequently, assi...

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Bibliographic Details
Published inJournal of Information Display Vol. 2; no. 3; pp. 54 - 59
Main Authors Choi, G.S, Park, J.B, Hong, S.Y, Cho, Y.S, Son, K.H, Kim, D-J, Song, Y.H, Lee, J.H, Cho, K.I, Kim, D.J
Format Journal Article
LanguageKorean
Published 2001
Subjects
basegrowth mode
treatment
carbon nanotube
thermal CVD
NH
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Summary:The role of $NH_3$ for vertical alignment of CNTs was investigated. The direct cause of the alignment was a dense distribution of catalytic metal particles, but which was kept catalytically active during the growth process by $NH_3$. This allows a dense nucleation of the CNTs, and consequently, assists vertical alignment through entanglement and mechanical leaning among the tubes. The CNTs grow in a base growth mode. Several evidences were presented including a direct cross-sectional TEM observation. Since Ni is consumed both by silicide reaction and by capture in the growing tube, the growth stops when Ni is completely depleted. This occurs faster for smaller particles, and thus a longer growth results in thin bottom with poor adhesion.
Bibliography:KISTI1.1003/JNL.JAKO200124282636302
ISSN:1598-0316
2158-1606