Optical constants of highly stretch-oriented poly(p-phenylene-vinylene): Ajoint experimental and theoretical study

Authors
Comoretto, D Dellepiane, G Marabelli, F Cornil, J dos Santos, DA Bredas, JL Moses, D
Citation
D. Comoretto et al., Optical constants of highly stretch-oriented poly(p-phenylene-vinylene): Ajoint experimental and theoretical study, PHYS REV B, 62(15), 2000, pp. 10173-10184
Citations number
65
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICAL REVIEW B
ISSN journal
01631829 → ACNP
Volume
62
Issue
15
Year of publication
2000
Pages
10173 - 10184
Database
ISI
SICI code
0163-1829(20001015)62:15<10173:OCOHSP>2.0.ZU;2-L
Abstract
We have determined the frequency dispersion of the anisotropic complex opti cal constants of highly stretch-oriented poly(p-phenylene-vinylene) chains from Kramers-Kronig transformation of polarized near-normal-incidence absol ute reflectivity data, inversion of polarized reflectance and transmittance measurements, and spectroscopic ellipsometry. The spectroscopic data are d iscussed in comparison to the results provided by correlated quantum-chemic al calculations. On this basis, we assign the nature and polarization of th e optical transitions in poly(p-phenylene-vinylene) chains.