Ultraviolet antireflectance and high energy facets induced superhydrophilicity in SnO2 nano-arrayed thin films
| Autor: | M. Satheesh, Abdul Rasheed Paloly, M. Junaid Bushiri |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Nanostructure
Materials science 02 engineering and technology medicine.disease_cause 01 natural sciences law.invention Superhydrophilicity law 0103 physical sciences Materials Chemistry Transmittance medicine Thin film 010302 applied physics business.industry Process Chemistry and Technology 021001 nanoscience & nanotechnology Surfaces Coatings and Films Electronic Optical and Magnetic Materials Anti-reflective coating Ceramics and Composites Optoelectronics 0210 nano-technology business Refractive index Ultraviolet Visible spectrum |
| Zdroj: | Ceramics International. 45:11032-11040 |
| ISSN: | 0272-8842 |
| DOI: | 10.1016/j.ceramint.2019.02.187 |
| Popis: | Ultraviolet (UV) radiation carries higher energy than visible light which causes potential damages to eye, immune system and skin. Even though antireflective glasses available in market are effective against visible light, they reflect high levels of UV radiation. Hence development of coatings which neither transmit nor reflect high energy UV radiation is highly desirable. Herein, we demonstrate the direct growth of SnO2 nanostructured arrays with broadband antireflectance using a simple spray pyrolysis method. An investigation on nanostructure evolution has been carried out which revealed that the growth mechanism has a strong dependence on deposition temperature, time and solvent used. SnO2 nanostructured arrays exhibited broadband antireflectance with less than 0.5% reflectance and near zero transmittance in high energy UVB (280–315 nm) wavelength region due to the graded refractive index and scattering provided by nanoarrays. The prepared samples are superhydrophilic in nature due to the presence of high energy facets which account for their observed anticondensation properties. These multifunctional SnO2 nanostructured arrays may have potential applications in sunglasses, safety glasses, windows, optical materials and solar panels owing to their antireflective, antifogging and self-cleaning properties. |
| Databáze: | OpenAIRE |
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