ZnO sol-gel oxide coatings as materials for UV optical filters

Karolina Moszak1, Anna Szczurek2, Bartosz Babiarczuk2, Beata Borak2, Justyna Krzak2*

1Wyszynskiego 31, 50-330 Wroclaw, Poland

2Department of Mechanics, Materials Science and Engineering, Wroc?aw University of Science and Technology, Smoluchowskiego 25 St., 50-370 Wroclaw, Poland

Adv. Mater. Lett., 2017, 8 (4), pp 542-545

DOI: 10.5185/amlett.2017.7108

Publication Date (Web): Mar 15, 2017

E-mail: justyna.krzak@pwr.edu.pl

Abstract


Ultraviolet light influences materials structure causing the decomposition and degradation of organic compounds. One of the ideas to reduce the harmful effects of light is to protect materials by sol-gel coatings. ZnO sol-gel thin films on a glass substrate were obtained as optical filters. The filter effect of synthesized coatings stabilized in different temperatures were characterized by UV-Vis transmittance spectroscopy. The morphology and elemental composition of coating surface was determined by SEM and EDX. Scratch resistance and adhesion have been evaluated by scratch test. The coatings present high transparency in the visible region and absorption in the UV region (270-360 nm). The results suggest that the obtained materials have proper parameters for UV optical filters. 

Keywords

Thin films, zinc oxide, UV absorbers, adhesion.

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