Low-field electron emission from tetrapod-like ZnO nanostructures synthesized by rapid evaporation

Wan, Q.; Yu, K.; Wang, T.H.; Lin, C.L.
September 2003
Applied Physics Letters;9/15/2003, Vol. 83 Issue 11, p2253
Academic Journal
Tetrapod-like zinc oxide (ZnO) nanostructures can be synthesized by rapid heating metal zinc pellet at 900 °C under air ambient. Catalyst, vacuum, and carrying gas are not necessary, and more importantly, it is a volcanic process for rapid and mass production. The turn-on field of the synthesized tetrapod-like ZnO nanostructures is found to be as low as 1.6 V/μm at the current density of 1 μA/cm[sup 2]. These ZnO nanostructures are technologically useful for vacuum electron devices because they can be easily and economically synthesized and deposited on large substrates. © 2003 American Institute of Physics.


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