Radio frequency plasma polymerized thin film based on eucalyptus oil as low dielectric permittivity, visible and near-infrared (NIR) photoluminescent material
| Autor: | Indra Sulaniya, Jemy James, M.R. Anantharaman, K. K. Anoop, Cyriac Joseph, Junaid M. Bushiri, Beena Mol |
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| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Photoluminescence Materials science Absorption spectroscopy Analytical chemistry Dielectric Condensed Matter Physics 01 natural sciences Atomic and Molecular Physics and Optics Plasma polymerization Electronic Optical and Magnetic Materials Ellipsometry 0103 physical sciences Tauc plot Dielectric loss Electrical and Electronic Engineering Thin film |
| Zdroj: | Journal of Materials Science: Materials in Electronics. 30:12603-12611 |
| ISSN: | 1573-482X 0957-4522 |
| DOI: | 10.1007/s10854-019-01621-5 |
| Popis: | Thin films derived from eucalyptus oil was fabricated on glass and silicon substrate by rf plasma polymerization technique and characterized by FTIR, FESEM, AFM, Ellipsometry, UV–Visible and Photoluminescence spectroscopy. The dielectric constant and dielectric loss of the thin films were estimated using spectroscopic ellipsometry technique. Functional groups related to chromophores present in the eucalyptus oil thin films were identified using FTIR spectroscopy. π − π* interband transitions (306 nm) and intramolecular charge transfer (556 nm) was observed from the absorption spectra of the polymerized thin films. The indirect optical band gap estimated using Tauc plot was 3.66 eV, which revealed the semiconducting nature of the thin film. The value of real part of dielectric constant (ϵ′) was less than 2.44, which indicated a low dielectric permittivity behaviour of the film in the optical regime. The photoluminescence emission studies and CIE colour coordinates showed that plasma polymerized eucalyptus oil thin films exhibits yellow and IR emission. |
| Databáze: | OpenAIRE |
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