Optical characterisation of radio frequency plasma polymerised Lavandula angustifolia essential oil thin films
Easton, C.D., and Jacob, M.V. (2009) Optical characterisation of radio frequency plasma polymerised Lavandula angustifolia essential oil thin films. Thin Solid Films, 517 (15). pp. 4402-4407.
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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 W and 2.34 at 75 W.
|Item Type:||Article (Refereed Research - C1)|
|Keywords:||Polymer; Thin film; Plasma polymerisation; Optical properties|
|FoR Codes:||09 ENGINEERING > 0912 Materials Engineering > 091208 Organic Semiconductors @ 100%|
|SEO Codes:||97 EXPANDING KNOWLEDGE > 970109 Expanding Knowledge in Engineering @ 100%|
|Deposited On:||21 May 2010 14:22|
|Last Modified:||18 Oct 2013 01:03|
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