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Field emission properties of ZnO nanorods coated with NiO film

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8 Author(s)
Yang, Ji Hoon ; Center for Nanotubes and Nanostructured Composites, BK21 Physics Research Division, SKKU Advanced Institute Nanoscience and Technology, Sungkyunkwan University, 300 Chunchun-dong, Suwon 440-746, Republic of Korea ; Youb Lee, Seung ; Song, Woo Seok ; Shin, Yong Sook
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The field emission (FE) properties of ZnO and NiO-coated ZnO (NiO/ZnO) nanorods are investigated under vacuum of 7×10-7 Torr and oxygen rich vacuum of 1×10-5 Torr. The ZnO nanorods were synthesized on a Si(100) substrate by metal-organic chemical vapor deposition, and the NiO film with the thickness of ∼15 nm was coated by using atomic layer deposition. The turn-on voltages of the NiO/ZnO nanorod and the ZnO nanorod were ∼5.2 and ∼3.0 Vm at 1 μA/cm2, respectively. The electron FE stability of the NiO/ZnO nanorods to the ZnO nanorod was significantly improved in oxygen rich vacuum even.

Published in:

Journal of Vacuum Science & Technology B: Microelectronics and Nanometer Structures  (Volume:26 ,  Issue: 3 )