Nano Archive

Physical mechanism of blue-shift of UV luminescence of a single pencil-like ZnO nanowire

Yang, Y. H. and Chen, I. Y. and Feng, Y and Yang, G. W. (2007) Physical mechanism of blue-shift of UV luminescence of a single pencil-like ZnO nanowire. NANO LETTERS, 7 (12). pp. 3879-3883.

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Official URL: http://pubs.acs.org/doi/abs/10.1021/nl071849h

Abstract

Cathodoluminescence spectroscopy is used to address the ultraviolet (UV) luminescence of a single pencil-like ZnO nanowire whose diameter gradually reduces from bottom to top in the range of 700-50 nm. It is found that the UV emission energy evidently shifts to the high energy with the ZnO nanowire's diameter decreasing and the blue-shift of 90 meV is observed when the nanowire diameter reduces to 50 from 700 nm. The physical mechanism of the UV blue-shift of the ZnO nanowire is attributed to the Burstein-Moss effect under the high carrier concentration.

Item Type:Article
Subjects:Physical Science > Quantum phenomena
Material Science > Nanostructured materials
ID Code:445
Deposited By:Farnush Anwar
Deposited On:12 Dec 2008 10:58
Last Modified:02 Mar 2009 10:32

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