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

Hua Chen*, Hongzhou Zhang, Lan Fu, Ying Chen, James S. Williams, Chao Yu, Dapeng Yu

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    37 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Article number243105
    JournalApplied Physics Letters
    Volume92
    Issue number24
    DOIs
    Publication statusPublished - 2008

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