Growth behavior and field emission property of ZnO nanowire arrays on Au and Ag films

Sung Hyun Kim, Churl Seung Lee, Jeesun Kim, Jin Woo Cho, Young Keun Kim

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

We propose a facile method to control the growth and areal density of zinc-oxide (ZnO) nanowire arrays using gold or silver films deposited on aluminum-doped ZnO (AZO) layers coated on glass substrates. Nanowires exceeding 5 μm in length grew on both the glass/AZO-layer and on the glass/AZO-layer/Au-film where the areal array density was controlled primarily by changing the annealing temperature. In contrast, the nanowire arrays grew only on the AZO surface but not on the Ag film owing to the formation of an Ag-oxide layer. We fabricated field emitter devices with density controlled ZnO nanowire arrays and low turn-on electric field of ∼6 V/μm and a field enhancement factor of up to 1188 were obtained with density controlled ZnO nanowire arrays.

Original languageEnglish
Article number092132
JournalAIP Advances
Volume3
Issue number9
DOIs
Publication statusPublished - 2013

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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