Nano Au-decorated boron nitride nanotubes: Conductance modification and field-emission enhancement

被引：35

作者：

Chen, Hua ^{[1
]}

Zhang, Hongzhou ^{[1
]}

Fu, Lan ^{[1
]}

Chen, Ying ^{[1
]}

Williams, James S. ^{[1
]}

Yu, Chao ^{[2
,3
]}

Yu, Dapeng ^{[2
,3
]}

机构：

[1] Australian Natl Univ, Res Sch Phys Sci & Engn, Canberra, ACT 0200, Australia

[2] Peking Univ, Sch Phys, Electron Microscopy Lab, Beijing 100871, Peoples R China

[3] Peking Univ, Sch Phys, State Key Lab Mesocop Phys, Beijing 100871, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2008年 / 92卷 / 24期

基金：

澳大利亚研究理事会;

关键词：

D O I：

10.1063/1.2943653

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

This letter reports the electrical and field-emission properties of Au-decorated boron nitride nanotubes (Au-BNNTs). The insulating BNNTs become metallic after Au coating as the Au coverage exceeds a critical value. The Au decoration modifies the work function of the BNNTs and, as a consequence, the field-emission current densities of Au-BNNTs are significantly enhanced. Correspondingly, the turn-on field of the Au-BNNTs is reduced to one third and the emission current density is increased by four orders in contrast to pure BNNTs. The experimental results demonstrate that such Au-BNNTs are promising electron field emitters.

引用

页数：3

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