ASIA unversity:Item 310904400/9565
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 94286/110023 (86%)
Visitors : 21692538      Online Users : 814
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
    •  Adv. Search
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version


    Please use this identifier to cite or link to this item: http://asiair.asia.edu.tw/ir/handle/310904400/9565


    Title: Characteristics of ZnO thin films prepared by acidic sol method
    Authors: C. J. Huang;H. C. Yao;M. C. Chiu;R. S. Yu;F. S. Shieu
    Keywords: zinc oxide;dip coating;formic acid;acidic sol;zinc chloride
    Date: 2007
    Issue Date: 2010-05-12 01:12:22 (UTC+0)
    Publisher: Asia University
    Abstract: Zinc oxide (ZnO) thin films are grown using an acidic sol by dip coating. The acidic sol is prepared from a methanolic solution of zinc chloride using formic acid (HCOOH) as the stabilizer and poly(vinyl acetate) (PVAc) as the tackifier. Crystalline ZnO thin films are obtained following annealing at 480 °C for 1 h. The effects of dip-coating conditions on the microstructure and optical properties of the ZnO thin films are investigated using a variety of analytical tools. Field emission scanning electron microscopy (FE-SEM) and transmission electron microscopy (TEM) show that fine ZnO crystallites comprise the bottom layer of the films, and large crystallites emerge on the surface of the fine crystallite layer. Selected area diffraction (SAD) patterns indicate that both the fine and large crystallites exhibit a hexagonal wurtzite crystal structure. The particle size distribution of the bottom fine crystallites is below 20 nm, while that of the large crystallites varies from 500 to 800 nm, depending on the number of dip-coating times. The ZnO films have an absorption edge that starts at approximately 370 nm and cuts off at 290 nm. As calculated from the absorption edge, the ZnO films have optical gaps of about 4.02–4.11 eV.
    Relation: Japanese Journal of Applied Physics 46(2007):5264-5268
    Appears in Collections:[Department of Photonics and Communication Engineering] Journal Article

    Files in This Item:

    File SizeFormat
    0KbUnknown645View/Open


    All items in ASIAIR are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback