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Impact of nanostructured thin ZnO film in ultraviolet protection

Authors Sasani Ghamsari M, Alamdari S, Han W, Park H

Received 1 August 2016

Accepted for publication 8 November 2016

Published 28 December 2016 Volume 2017:12 Pages 207—216


Checked for plagiarism Yes

Review by Single anonymous peer review

Peer reviewer comments 3

Editor who approved publication: Dr Thomas Webster

Morteza Sasani Ghamsari,1 Sanaz Alamdari,1 Wooje Han,2 Hyung-Ho Park2

1Laser and Optics Research School, Nuclear Science and Technology Research Institute, Tehran, Iran; 2Department of Materials Science and Engineering, Yonsei University, Seoul, South Korea

Abstract: Nanoscale ZnO is one of the best choices for ultraviolet (UV) protection, not only because of its antimicrobial properties but also due to its potential application for UV preservation. However, the behavior of nanostructured thin ZnO films and long-term effects of UV-radiation exposure have not been studied yet. In this study, we investigated the UV-protection ability of sol gel-derived thin ZnO films after different exposure times. Scanning electron microscopy, atomic force microscopy, and UV-visible optical spectroscopy were carried out to study the structure and optical properties of the ZnO films as a function of the UV-irradiation time. The results obtained showed that the prepared thin ZnO films were somewhat transparent under the visible wavelength region and protective against UV radiation. The UV-protection factor was 50+ for the prepared samples, indicating that they were excellent UV protectors. The deposited thin ZnO films demonstrated promising antibacterial potential and significant light absorbance in the UV range. The experimental results suggest that the synthesized samples have potential for applications in the health care field.

Keywords: ZnO, sol gel, thin film, UV protection

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