Journal
MATERIALS LETTERS
Volume 110, Issue -, Pages 160-163Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2013.08.023
Keywords
ZnO; Thin films; Surfaces; Wettability; Hydrothermal process
Funding
- Young's Natural Science Foundation of Jiangsu University [JDQ03008]
- Senior Talent Research Foundation of Jiangsu University [13JDG045]
- Jiangsu Province Research Innovation Program of College Graduate [CXZZ13_0663]
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The wetting behaviors of zinc oxide (ZnO) thin films, which were grown on aluminum-doped zinc oxide (AZO) and tin-doped indium oxide (ITO) buffer layers by hydrothermal process, are reported. The ZnO film grown on the AZO layer, which has a morphology containing micro- and nanoscaled features, shows a slight decrease in water contact angle (WCA) after UV illumination. The ZnO film grown on the ITO layer, which is composed of single-scale microrods, exhibits a transition between hydrophobicity and superhydrophilicity under UV exposure for 8 h and dark storage for 2 weeks. The wettabilities of the both films are enabled to convert reversibly by alternative heating at 400 degrees C and 100 degrees C. This work may be of huge importance from the viewpoint of self-cleaning and anti-fogging applications liased on wettability control of ZnO films. (C) 2013 Elsevier B.V. All rights reserved.
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