SiO2/TiO2 one-dimensional photonic crystals doped with Sm and Ce rare-earth elements for enhanced structural colors
| Autor: | Ramazan Dalmis, N. Funda Ak Azem, Işıl Birlik, Erdal Celik |
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| Rok vydání: | 2019 |
| Předmět: |
Microscope
Materials science Scanning electron microscope General Physics and Astronomy chemistry.chemical_element 02 engineering and technology 010402 general chemistry 01 natural sciences law.invention law Fourier transform infrared spectroscopy Photonic crystal Diffractometer Dopant business.industry Doping Surfaces and Interfaces General Chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 0104 chemical sciences Surfaces Coatings and Films Cerium chemistry Optoelectronics 0210 nano-technology business |
| Zdroj: | Applied Surface Science. 475:94-101 |
| ISSN: | 0169-4332 |
| DOI: | 10.1016/j.apsusc.2018.12.234 |
| Popis: | Nowadays 1-D photonic crystal materials are becoming very popular due to their numerous innovative properties. One of the most attractive features is that they exhibit outstanding structural colors without pigment. In this study, multilayer photonic crystal with SiO2/TiO2 architecture was grown by sol-gel technique and samarium (Sm) and cerium (Ce) elements were doped into the SiO2 layers. The effects of these dopants on the structural and physical properties are characterized by X-Ray Diffractometer (XRD), Fourier Transform Infrared Spectroscopy (FT-IR), Scanning Electron Microscope (SEM), UV Spectrophotometer (UV–Vis) and Optic Microscope (OM) devices. Increasing concentrations of Sm and Ce dopants caused an increase in the reflectance and photonic band gap values, and increased the vitality and variety of the colors obtained on the surfaces of the coatings. Doping elements also improved the surface quality of the coatings by preventing crack formation. |
| Databáze: | OpenAIRE |
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