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National Chung Hsing University Institutional Repository - NCHUIR > 工學院 > 工學院 > 依資料類型分類 > 期刊論文 >  Characteristics of ZnO thin films prepared by acidic sol method

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/128590

標題: Characteristics of ZnO thin films prepared by acidic sol method
作者: Huang, C.J.;Yao, H.C.;Chiu, M.C.;Yu, R.S.;Shieu, F.S.
關鍵字: zinc oxide;dip coating;formic acid;acidic sol;zinc chloride;chemical bath deposition;optical-properties;transparent;growth
日期: 2007
Issue Date: 2012-12-07 14:55:34 (UTC+8)
關連: Japanese Journal of Applied Physics Part 1-Regular Papers Brief Communications & Review Papers, Volume 46, Issue 8A, Page(s) 5264-5268.
摘要: 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 degrees 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 line 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 Part 1-Regular Papers Brief Communications & Review Papers
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 薛富盛

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