Electrodynamic properties of aqueous spray-deposited SnO2:F films for infrared plasmonics
| Autor: | Tim Cooper, Evan M. Smith, Isaiah O. Oladeji, Farnood Khalilzadeh-Rezaie, Justin W. Cleary, Gordon Grzybowski, Robert E. Peale, Hussain Abouelkhair, Shivashankar Vangala |
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| Rok vydání: | 2017 |
| Předmět: |
Permittivity
Materials science Dopant Doping General Engineering Analytical chemistry 02 engineering and technology 021001 nanoscience & nanotechnology Tin oxide 01 natural sciences Atomic and Molecular Physics and Optics Nanocrystalline material 010309 optics Crystallinity Electrical resistivity and conductivity 0103 physical sciences 0210 nano-technology Transparent conducting film |
| Zdroj: | Optical Engineering. 56:037109 |
| ISSN: | 0091-3286 |
| DOI: | 10.1117/1.oe.56.3.037109 |
| Popis: | Electrodynamic properties of fluorine-doped tin oxide films grown by aqueous-spray-based heterogeneous reaction on heated hydrophilic substrates were investigated with emphasis on applications to infrared plasmonics. These properties were correlated with physical ones such as crystallinity, dopant and electron concentrations, conductivity, and mobility. The degree of crystallinity for the nanocrystalline films increases with F concentration and growth temperature. The F concentration in the films is proportional to that in the starting solution. Electron concentration and Hall mobility rise more slowly with F concentration. At their highest, both F and electron concentrations are ∼2% of the Sn concentration. In more lightly doped films, the electron concentration significantly exceeds the F concentration. The achieved resistivity of the doped films is lower than for undoped SnO2 film by 20 to 750 times. The infrared complex permittivity spectrum shows a shift in plasma wavelength from 15 to 2 μm with more than two orders increase in F concentration. |
| Databáze: | OpenAIRE |
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