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    Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50258


    Title: Optoelectronic properties of sputter-deposited Ag-SiO(2) nanoparticle films by rapid thermal annealing
    Authors: Hsieh,JH;Li,CA;Wu,YY;Jang,SC
    Contributors: 機械工程學系
    Keywords: COMPOSITE FILMS;THIN-FILMS;ABSORPTION;SILVER;GOLD
    Date: 2011
    Issue Date: 2012-03-27 17:07:52 (UTC+8)
    Publisher: 國立中央大學
    Abstract: Silicon dioxide with embedded nano-size Ag particles has unique optical absorption due to the phenomenon known as surface plasmon resonance (SPR). SPR is the local resonance of conduction band electrons when excited by external optical fields. In this study, Ag/SiO(2) films with different Ag layers (3/5/7/10 nm) were deposited on glass sequentially by magnetron sputtering. The films then underwent the rapid thermal annealing (RTA) to create various sizes of silver particles. The RTA was carried out at elevated temperatures from 450 to 600 degrees C over different periods. All samples were examined by field-emission scanning electron microscope (FESEM) and surface profiler for their surface morphology. For optical properties, the films' transmittance and reflectance were measured with wavelengths ranging from 300 to 900 nm by a UV-VIS-NIR spectrophotometer. Experimental results show that for longer annealing time (15 min) and thicker deposited Ag film, larger Ag particles can be produced. These larger Ag particles on SiO(2) surface serve as the resonators of electrons to result a broader absorption under the visible light irradiation. Following the experimental results, a newly proposed fitting scheme based on the Mie solution was tested and good fits to the experimental absorbance of different films were attained. (C) 2010 Published by Elsevier B. V.
    Relation: CURRENT APPLIED PHYSICS
    Appears in Collections:[機械工程學系] 期刊論文

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