Optical characterisation of radio frequency plasma polymerised Lavandula angustifolia essential oil thin films

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Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.3/155076

Title: Optical characterisation of radio frequency plasma polymerised Lavandula angustifolia essential oil thin films
Author(s): Easton, C. D.; Jacob, M. V.
Abstract: Optically transparent RF plasma polymerised thin films were fabricated from Lavandula angustifolia essential oil under varying RF power levels and their optical properties investigated. The refractive index, extinction coefficient, absorption and optical band gap of the thin films in addition to their thickness and roughness were investigated using the spectroscopic ellipsometry and UV-Vis spectroscopy in the wavelength range 200-1000 nm (6.199-1.239 eV). For films fabricated under the RF power from 10 W to 75 W, the refractive index values vary from 1.530 to 1.543 at 500 nm. Even though the refractive index is unaffected by the RF power, the optical band gap tends to decrease with increasing RF power, with 2.75 at 10 Wand 2.34 at 75 W.
Publication type: Journal article
Source: Thin Solid Films, Vol. 517, no. 15 (Jun 2009), pp. 4402-4407
Publication year: 2009
FOR Code(s): 0204 Condensed Matter Physics; 0910 Manufacturing Engineering; 0912 Materials Engineering
Keyword(s): Plasma polymerisation; Polymers; Optical properties; Thin films
Publisher: Elsevier
ISSN: 0040-6090
Publisher URL: http://dx.doi.org/10.1016/j.tsf.2009.02.023
Peer reviewed