Rapid growth of long, vertically aligned carbon nanotubes through efficient catalyst optimization using metal film gradients

被引：87

作者：

Christen, HM ^{[1
]}

Puretzky, AA

Cui, H

Belay, K

Fleming, PH

Geohegan, DB

Lowndes, DH

机构：

[1] Oak Ridge Natl Lab, Condensed Matter Sci Div, Oak Ridge, TN 37831 USA

[2] Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA

[3] Florida A&M Univ, Dept Phys, Tallahassee, FL 32307 USA

来源：

NANO LETTERS | 2004年 / 4卷 / 10期

关键词：

D O I：

10.1021/nl048856f

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Pulsed laser deposited, orthogonally overlapping metal film gradients are introduced as a versatile method to optimize desired nanomaterial characteristics simultaneously as a function of catalyst composition and film thickness. Catalyst libraries generated by this method are applied here to study the growth of vertically aligned carbon nanotubes by chemical vapor deposition in acetylene from Mo/Fe/Al multilayers on Si. An Fe/Mo atomic ratio of 16:1 was discovered to be optimal for the rapid growth of nanotubes to long lengths, at rates exceeding 1 mm/hr.

引用

页码：1939 / 1942

页数：4

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