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Title: Electroluminescence and field emission of Mg-doped ZnO tetrapods
Authors: Pan, H. 
Zhu, Y. 
Sun, H.
Feng, Y. 
Sow, C.-H. 
Lin, J. 
Issue Date: 28-Oct-2006
Citation: Pan, H., Zhu, Y., Sun, H., Feng, Y., Sow, C.-H., Lin, J. (2006-10-28). Electroluminescence and field emission of Mg-doped ZnO tetrapods. Nanotechnology 17 (20) : 5096-5100. ScholarBank@NUS Repository.
Abstract: ZnO tetrapods doped with Mg (Mg-ZnOTs) were produced by thermally oxidizing Zn and Mg powders. TEM and XRD patterns indicated that Mg-ZnOTs were crystalline with wurtzite structure. The transport measurements of Mg-ZnOT powder demonstrated that Mg-doped ZnO tetrapods are characteristic of a semiconductor with lower threshold voltage. Two peaks were clearly observed in the electroluminescence spectra. The blue light emission is related to the inter-band transition. The green or yellow light emission was induced by impurity centre recombination. Mg-doped ZnO exhibited better field emission properties with higher emission current density and lower turn-on field than pure ZnO nanowires. And ZnO with higher Mg content exhibited better field-emission properties with higher emission current density than ZnO with lower Mg content. © 2006 IOP Publishing Ltd.
Source Title: Nanotechnology
ISSN: 09574484
DOI: 10.1088/0957-4484/17/20/009
Appears in Collections:Staff Publications

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