VIBRONIC STRUCTURES AND ANISOTROPY OBSERVED IN LINEAR AND NONLINEAR-OPTICAL SPECTRA OF VACUUM-DEPOSITED POLYTHIOPHENE THIN-FILMS

Authors
FUKUDA T YAMAMOTO T KURIHARA T OOBA N
Citation
T. Fukuda et al., VIBRONIC STRUCTURES AND ANISOTROPY OBSERVED IN LINEAR AND NONLINEAR-OPTICAL SPECTRA OF VACUUM-DEPOSITED POLYTHIOPHENE THIN-FILMS, Synthetic metals, 60(3), 1993, pp. 259-264
Citations number
50
Categorie Soggetti
Physics, Condensed Matter","Metallurgy & Mining
Journal title
Synthetic metals → ACNP
ISSN journal
03796779
Volume
60
Issue
3
Year of publication
1993
Pages
259 - 264
Database
ISI
SICI code
0379-6779(1993)60:3<259:VSAAOI>2.0.ZU;2-B
Abstract
Linear and chi(3) spectra of vacuum-deposited thin films of polythioph ene (PTh, prepared by an organometallic process) show vibronic structu res with an energy difference of about 1500 cm-1 (0.19 eV). The vibron ic structure is more clearly observed in the chi(3) Spectrum and is co nsidered to originate from coupling with the nu(c=c) vibration of the thiophene ring. Large chi(3) anisotropy with a chi parallel-to (3)/chi perpendicular-to (3) value of about six is observed with the PTh film vacuum deposited on substrates covered with a rubbed poly(p-phenylene ) thin layer.