Eur. Phys. J. Appl. Phys. 37, 253-256 (2007)
https://doi.org/10.1051/epjap:2007032

Effect of the molecular chain orientation on carrier transport and optical properties of polymer blends^*

¹ Department of Semiconductor Physics and Institute of Materials Science and Applied Research, Vilnius University, Saultekio 9, bldg. 3, 10222 Vilnius, Lithuania
² Commissariat à l'Énergie Atomique, CEA-Saclay, CEA-DRT-LITEN, DSEN/GENEC/L2C, Bât. 451, Laboratoire Cellules et Composants, 91191 Gif-sur-Yvette Cedex, France

Corresponding author: vaidotas.kazukauskas@ff.vu.lt

Received: 25 July 2006
Revised: 2 October 2006
Accepted: 15 December 2006
Published online: 14 February 2007

Abstract

We have investigated properties of poly(9-vinylcarbazole) (PVK) doped with 30% wt 4-dibutylamino-4'-nitrostilbene (DBANS), depending on the orientation of the polar DBANS molecules. Appearance of the orientation-induced built-in electrical field was proven optically by the Solid Electric Field Induced Second Harmonic Generation and electrically by Current-Voltage characterization. Modification of optical properties was evidenced by the spectral dependencies of absorption coefficient. The Thermally Stimulated Currents spectra demonstrated that carrier transport and trapping are affected, too.