✦ LIBER ✦

Synthesis and optical properties of Pb-doped ZnO nanowires

✍ Scribed by Zhou, Shao-Min ;Zhang, Xiao-Hong ;Meng, Xiang-Min ;Wu, Shi-Kang ;Lee, Shuit-Tong

Publisher: John Wiley and Sons
Year: 2005
Tongue: English
Weight: 248 KB
Volume: 202
Category: Article
ISSN: 0031-8965
DOI: 10.1002/pssa.200406917

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✦ Synopsis

Abstract

We demonstrate bulk synthesis of single‐crystal Pb‐doped ZnO nanowires by using (Pb(NO~3~)~2~ + Zn) powders at 450 °C. These mass nanowires are characterized by X‐ray diffraction, scanning electron microscopy, energy dispersive X‐ray spectroscopy, transmission electron microscopy (TEM), selected area electron diffraction, and high‐resolution TEM; they have uniform diameters of about 70 nm and are hundreds of microns in length. The growth of ZnPbO nanowires is suggested for self‐catalyzed vapor‐liquid‐solid mechanism. In particular, the PL spectra of these nanowires show emission peaks that strongly shift to long wavelength with increasing Pb, and the doping quantity is found to be responsible for the different characteristics; the PL mechanism is explained in detail. (© 2005 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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