期刊
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES
卷 40, 期 4, 页码 795-799出版社
ELSEVIER
DOI: 10.1016/j.physe.2007.10.057
关键词
doping; nanostructures; growth from vapor; zinc compounds
A new multi-step thermal evaporation method was proposed to synthesize quasi-aligned Si-doped ZnO nanorods on Si substrate without introducing any catalysts. The content of Si in ZnO nanorods is about 5 at% from EDS analysis. Every nanorod has a two-step appearance, in which the diameter of the bottom exceeds that of the top. They all have a single-crystal hexagonal structure and grow along the [000 1] direction. Photoluminescence (PL) of these doped nanorods exhibits a red-shift UV emission peak and an enhanced green emission band, which all are induced by the Si doping. (c) 2007 Elsevier B.V. All rights reserved.
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