High efficiency surface-conducted field emission from a ZnO nanotetrapod and MgO nanoparticle composite emitter

Ke Qu; Chi Li; Kai Hou; Xiaxi Yang; Jin Zhang; Wei Lei; Xiaobing Zhang; Baoping Wang; Sun, X. W.
December 2008
Applied Physics Letters;12/22/2008, Vol. 93 Issue 25, p253501
Academic Journal
We report a surface-conducted field emitter made of a ZnO nanotetrapod and MgO nanoparticle composites with a high emission efficiency (∼100%) and current (3.77 mA at a gate voltage of 100 V and anode voltage of 1800 V). The fabrications of the triode structure with a 10×10pixel array and corresponding driving method have been proposed. The electron trajectories are simulated according to the structure. Individual pixel addressing can be achieved by a sequential scanning mode. Display of moving images employing this triode structure was demonstrated. The results are of significance to the development of ZnO based triode field emitters.


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