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Issue 22, 2014
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Optimized performances of tetrapod-like ZnO nanostructures for a triode structure field emission planar light source

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Abstract

Tetrapod-like ZnO (T-ZnO) nanostructures were synthesized by a simple vapor phase oxidation method without any catalysts or additives. We optimized the performances of T-ZnO nanostructures by adjusting the partial pressure of Zn vapour in the total pressure of the quartz chamber and obtained T-ZnO nanostructure materials of high purity, uniform morphology and size and high aspect ratio with a low turn-on electric field of 2.75 V μm−1, a large field enhancement factor of 3410 and good field emission stability for more than 70 hour continuous emission. Besides, based on the optimized T-ZnO, we developed metal grid mask-assisted water-based electrostatic spraying technology, and fabricated a large-scale, pollution-free, hole-shaped array T-ZnO nanostructure cathode used in a triode structure field emission planar light source. The controllable performances of the triode device were intensively investigated and the results showed that the triode device uniformly illuminated with a luminous intensity as high as 8000 cd m−2 under the conditions of 200 V grid voltage and 3300 V anode voltage. The research in this paper will benefit the development of a high performance planar light source based on T-ZnO nanostructures.

Graphical abstract: Optimized performances of tetrapod-like ZnO nanostructures for a triode structure field emission planar light source

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Publication details

The article was received on 25 Jul 2014, accepted on 07 Sep 2014 and first published on 10 Sep 2014


Article type: Paper
DOI: 10.1039/C4NR04235B
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Citation: Nanoscale, 2014,6, 13544-13549

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    Optimized performances of tetrapod-like ZnO nanostructures for a triode structure field emission planar light source

    Y. Chen, L. Hu, H. Song, H. Jiang, D. Li, G. Miao, Z. Li, X. Sun, Z. Zhang and T. Guo, Nanoscale, 2014, 6, 13544
    DOI: 10.1039/C4NR04235B

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