Enhanced field emission properties from well-aligned zinc oxide nanoneedles grown on the AuTin-Si substrate

Chan Jun Park, Duck Kyun Choi, Jinkyoung Yoo, Gyu Chul Yi, Cheol Jin Lee

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104 Citations (Scopus)

Abstract

The authors investigated the field emission from vertically well-aligned zinc oxide (ZnO) nanoneedles grown on the AuTin-Si (100) substrate using metal organic chemical vapor deposition. The turn-on field of ZnO nanoneedles was about 0.85 Vμm at the current density of 0.1 μA cm2, and the emission current density of 1 mA cm2 was achieved at the applied electric field of 5.0 Vμm. The low turn-on field of the ZnO nanoneedles was attributed to very sharp tip morphology, and the high emission current density was mainly caused by the formation of the stable Ohmic contact between the ZnO nanoneedles and Au film.

Original languageEnglish
Article number083107
JournalApplied Physics Letters
Volume90
Issue number8
DOIs
Publication statusPublished - 2007

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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