Doping Effects in Optical Properties of Low Temperature Grown ZnO Nanorod Arrays

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The main motivation of this work is the absence of systematic studies of impurity doping using aqueous solution method. The synthesis of ZnO nanorods at low-cost requires facile and low-temperature approaches. Here, we report on the influence of Ag dopant concentration on the structural, chemical, and optical properties of ZnO nanorods synthesized by hydrothermal technique. We present original results of a systematic investigation of crystal quality, morphology, chemical/electronic composition, vibrational modes and photoluminescence properties by using X-ray diffraction (XRD), energy dispersive X-ray spectroscopy (EDX), micro-Raman spectroscopy, scanning electron microscopy (SEM) and photoluminescence (PL). Strong effects of doping in Ag-doped ZnO nanorod arrays on optical properties will be presented. The experimental results are compared with theoretical data. The main advantage of the proposed synthesis is its simplicity and fast growth rates (15 min versus several hours reported by previous researchers using aqueous synthesis methods or other techniques). The strength of the proposed nanotechnology is that any substrate can be used to grow doped ZnO nanorods and transferable nanorods. It is anticipated that the ZnO nanorods will find many applications in novel nanodevices and the design of some original device structures is proposed.

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Journal: TechConnect Briefs
Volume: 2, Nanotechnology 2010: Electronics, Devices, Fabrication, MEMS, Fluidics and Computational
Published: June 21, 2010
Pages: 153 - 156
Industry sector: Advanced Materials & Manufacturing
Topic: Advanced Materials for Engineering Applications
ISBN: 978-1-4398-3402-2