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- W1991610065 abstract "We report a novel method for producing aligned ZnO nanorods (ANR) on self-grown ZnO template in a single step process involving growth of ZnO by vapor transport, followed by quenching of growing ZnO flux in liquid nitrogen. In the present study Zn powder turns into ZnO sheet under oxygen flow at ∼900 °C and bottom surface of the sheet acts as template for the growth of ANR. It is revealed from XRD and EDAX analysis that the bottom of the sheet is Zn rich region and acts as self catalyst for the growth of ANR. The grown nanorods have length up to several tens of micrometers with diameters ranging from ∼100 to 150 nm. Microstructural analysis of ANR indicates the fractal like configuration. The field emission properties have been investigated for ANR with fractal geometry using the ANR on self-grown ZnO template as a cathode directly. The turn-on electric field required to draw current density of ∼1.0 μA/cm2 has been found to be ∼0.98 V/μm. The field enhancement factor based on Fowler–Nordheim (F–N) plot was found to be ∼7815 for ANR. The fractal geometry of ANR has been shown to be advantageous for achieving improved field emission features. The present investigations of synthesis involving formation of ANR over self-grown ZnO template, together with fractal configuration of the as-synthesized ANR, are first of their type." @default.
- W1991610065 created "2016-06-24" @default.
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- W1991610065 date "2010-08-01" @default.
- W1991610065 modified "2023-10-16" @default.
- W1991610065 title "Formation of aligned ZnO nanorods on self-grown ZnO template and its enhanced field emission characteristics" @default.
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- W1991610065 doi "https://doi.org/10.1016/j.apsusc.2010.03.130" @default.
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