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 language | English |
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Article number | 083107 |
Journal | Applied Physics Letters |
Volume | 90 |
Issue number | 8 |
DOIs | |
Publication status | Published - 2007 |
Bibliographical note
Funding Information:This work was supported by the SRC program of Center for Nanotubes and Nanosructured Composites of MOST/KOSEF, by the National R&D Project for Nano Science and Technology, and by the Ministry of Commerce, Industry, and Energy of Korea through a Components and Materials Technology Development project (No.0401-DD2-0162).
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)