Issue |
J. Eur. Opt. Soc.-Rapid Publ.
Volume 4, 2009
|
|
---|---|---|
Article Number | 09016 | |
Number of page(s) | 6 | |
DOI | https://doi.org/10.2971/jeos.2009.09016 | |
Published online | 13 April 2009 |
Regular papers
Characterization and investigation of NLO properties of some selected electrodeposited polythiophenes
1
Department of Chemical, Process and Materials Engineering, University of Palermo, Viale delle Scienze, 90128 Palermo, Italy
2
Laboratory POMA, UMR CNRS 6136, University of Angers, 2 Bd Lavoisier, 49045 Angers, France
3
Scientific-Technical and Educational Center of Low Temperature Studies, Ivan Franko National University of Lviv, Dragomanova Street, 50, UA-79005 Lviv, Ukraine
4
Faculty of Sciences Dhar el Mahraz, B.P. 1796, Fés 30 000 - Morocco
Received:
12
December
2008
In this work we study the electronic properties of ClO−4 doped polythiophenes and discuss the nonlinear optical properties of these organic compounds galvanostatically electrodeposited on ITO glasses. The investigation on the electronic properties (band gap, flat band potential) was performed by means of a non-destructive optical technique, photocurrent spectroscopy (PCS). The investigation on the nonlinear optical response was carried out by means of second and third harmonic generation (SHG and THG) measurements. In particular, the effect of the oxidation state of the polymeric films was studied by comparing the NLO response of oxidized and reduced polythiophenes. Reduced polymeric films show higher values of the second (χ〈2〉) and third (χ〈3〉) order nonlinear optical susceptibilities.
Key words: band gap / flat band potential / SHG / THG / NLO properties
© The Author(s) 2009. All rights reserved.
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