Raman study of oriented ZnO thin films deposited by sol-gel method
Raman study of oriented ZnO thin films deposited by sol-gel method
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DOI：
10.1016/j.saa.2008.03.032
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发表时间：
2008-12-15
影响因子：
4.4
通讯作者：
Petitet, J. P.
中科院分区：
文献类型：
--
作者：
Ben Yahia, S.;Znaidi, L.;Petitet, J. P.
以Zn（CH 3COO）（2）中心点2 H（2）O为原料，采用溶胶-凝胶法制备了沿着（002）面择优取向的ZnO薄膜。通过将乙酸锌溶解在乙醇和单乙醇胺的溶液中来制备均匀且稳定的溶液。通过在玻璃基板上旋涂来获得薄膜。通过在每次涂布后将旋涂的膜在300 ℃下预热10分钟并后加热至550 ℃持续2小时来获得ZnO膜。热处理后，沉积的薄膜转变成单取向的ZnO。该膜由具有均匀尺寸和均匀表面的海绵状颗粒聚集体组成。研究了ZnO薄膜和存款溶液的拉曼光谱。新的拉曼结果的存款解决方案表明，Zn-O键的形式首先在溶液中，这些实体发挥细菌的作用，启动薄膜退火过程中的结晶机制。退火膜的拉曼光谱显示膜结构内存在压应力。(C)2008 Elsevier B. V.保留所有权利。
ZnO films with preferred orientation along the (002) plane were successfully deposited by the sol-gel method using Zn(CH3COO)(2)center dot 2H(2)O as starting material and inorganic precursor. A homogeneous and stable solution was prepared by dissolving the zinc acetate in a solution of ethanol and monoethanolamine. Thin films are obtained by spin-coating on glass substrates. ZnO films were obtained by preheating the spin-coated films at 300 degrees C for 10 min after each coating and postheating upto 550 degrees C for 2 h. The as-deposited films are transformed into mono-oriented ZnO upon thermal treatment. The films consist of spongy particles aggregates with an uniform size and homogenous surface. The films aim to be used in optoelectronic devices.Raman spectroscopy from ZnO films and deposit solutions has been investigated. New Raman results of the deposit solution suggest that Zn-O bond forms first in solution and that these entities play the role of germs initiating the crystallization mechanisms during films annealing. Raman spectra of the annealed films show the presence of a compressive stress within the film structure. (C) 2008 Elsevier B.V. All rights reserved.