期刊
OPTICS COMMUNICATIONS
卷 284, 期 1, 页码 236-239出版社
ELSEVIER
DOI: 10.1016/j.optcom.2010.08.084
关键词
ZnO thin films; Sol-gel method; Glucose; Transmittance; Band gap
类别
资金
- Natural Science Foundation of China [20873118]
- Program for New Century Excellent Talents in University [NCET-08-0665]
- Program for Science & Technology Innovation Talents in Universities of Henan Province [2008 HASTIT016]
- Henan Province Science and Technology Key Project [082102230036]
- Natural Science Foundation of Henan Province, China [97A158]
- Innovation Scientists and Technicians Troop Construction Projects of Henan Province [10410051001]
In this work. ZnO thin films were prepared by sol-gel method on glass substrates followed by calcinations at 500 degrees C for an hour. The effect of glucose on the structure and optical properties of the films was studied. The structural characteristics of the samples were analyzed by X-ray diffractometer (XRD) and atomic force microscope (AFM). The optical properties were studied by a UV-visible spectrophotometer. The results show that some of the prepared ZnO thin films have a high preferential oriented c-axis orientation with compact hexagonal wurtzite structure due to a proper amount of glucose introducing. After introducing the glucose additive in ZnO colloids, the intensity of (002) peak, the transmittance, and the optical band gap of the ZnO thin films increases because of the enhanced ZnO crystallization. On the contrary, the absorbance, the film thickness, and the surface root-mean-square (RMS) roughness of the ZnO thin films decreases. The glucose additive could not only improve the surface RMS roughness and microstructure of ZnO thin films, but also enhance the transmittance and the energy band gap more easily. (C) 2010 Elsevier B.V. All rights reserved.
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