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

被引:21
作者
Easton, C. D. [1 ]
Jacob, M. V. [1 ]
机构
[1] James Cook Univ, Sch Engn, Elect Mat Res Lab, Townsville, Qld 4811, Australia
关键词
Polymer; Thin film; Plasma polymerisation; Optical properties; ELLIPSOMETRY; ABSORPTION;
D O I
10.1016/j.tsf.2009.02.023
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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. (C) 2009 Elsevier B.V. All rights reserved.
引用
收藏
页码:4402 / 4407
页数:6
相关论文
共 36 条
[1]   Optical constants of polyaniline/poly(methylmethacrylate) blend [J].
Al-Attar, HA ;
Telfah, AD .
OPTICS COMMUNICATIONS, 2004, 229 (1-6) :263-270
[2]   LIGHT-EMITTING-DIODES BASED ON CONJUGATED POLYMERS [J].
BURROUGHES, JH ;
BRADLEY, DDC ;
BROWN, AR ;
MARKS, RN ;
MACKAY, K ;
FRIEND, RH ;
BURN, PL ;
HOLMES, AB .
NATURE, 1990, 347 (6293) :539-541
[3]   Exploring the potential of ellipsometry for the characterisation of electronic, optical, morphologic and thermodynamic properties of polyfluorene thin films [J].
Campoy-Quiles, M ;
Etchegoin, PG ;
Bradley, DDC .
SYNTHETIC METALS, 2005, 155 (02) :279-282
[4]   Repeatability of ellipsometric data in cholera toxin GM1-ELISA structures [J].
Castro, Leon G. ;
Thompson, Daniel W. ;
Tiwald, Thomas ;
Berberov, Emil M. ;
Woollam, John A. .
SURFACE SCIENCE, 2007, 601 (08) :1795-1803
[5]   CONDUCTION IN NON-CRYSTALLINE SYSTEMS .5. CONDUCTIVITY, OPTICAL ABSORPTION AND PHOTOCONDUCTIVITY IN AMORPHOUS SEMICONDUCTORS [J].
DAVIS, EA ;
MOTT, NF .
PHILOSOPHICAL MAGAZINE, 1970, 22 (179) :903-&
[6]   Structure and lattice dynamics of binary lead silicate glasses investigated by infrared spectroscopy [J].
De Sousa Meneses, D. ;
Malki, M. ;
Echegut, P. .
JOURNAL OF NON-CRYSTALLINE SOLIDS, 2006, 352 (08) :769-776
[7]  
GAUR S, 2000, 43 ANN TECHN C P SOC, P353
[8]   Optical properties of polymeric thin films grown by chemical vapor deposition [J].
Gaynor, JF ;
Desu, SB .
JOURNAL OF MATERIALS RESEARCH, 1996, 11 (01) :236-242
[9]  
Hiratsuka A, 2000, ELECTROANAL, V12, P695, DOI 10.1002/1521-4109(200005)12:9<695::AID-ELAN695>3.0.CO
[10]  
2-4