TY - JOUR
T1 - Electro-optic spectroscopy of poly(3-octylthiophene)
AU - Martin, S. J.
AU - Gelsen, O. M.
AU - Bradley, D. D.C.
AU - Botta, C.
N1 - Generated from Scopus record by KAUST IRTS on 2019-11-27
PY - 1994/1/1
Y1 - 1994/1/1
N2 - Electric field induced changes in the optical properties of poly(3-octylthiophene) in the spectral region of the lowest electronic transition are reported. The electroabsorption [EA] resembles the first energy derivative of the unperturbed spectrum, scales quadratically with the applied electric field, and its lineshape is field invariant, all consistent with a DC Kerr effect whose origin is the Stark shift of a singlet exciton. In addition, a transition that does not appear in the unperturbed absorption spectrum is detected and we assign this to the normally dipole forbidden one-photon excitation of a 1 Ag even parity exciton that becomes allowed by the symmetry breaking effect of the applied field. The optical constants of P30T have also been determined and these are used to calculate the real and imaginary parts of the DC Kerr susceptibility, x(3’) from the EA spectrum. © 1994, Taylor & Francis Group, LLC. All rights reserved.
AB - Electric field induced changes in the optical properties of poly(3-octylthiophene) in the spectral region of the lowest electronic transition are reported. The electroabsorption [EA] resembles the first energy derivative of the unperturbed spectrum, scales quadratically with the applied electric field, and its lineshape is field invariant, all consistent with a DC Kerr effect whose origin is the Stark shift of a singlet exciton. In addition, a transition that does not appear in the unperturbed absorption spectrum is detected and we assign this to the normally dipole forbidden one-photon excitation of a 1 Ag even parity exciton that becomes allowed by the symmetry breaking effect of the applied field. The optical constants of P30T have also been determined and these are used to calculate the real and imaginary parts of the DC Kerr susceptibility, x(3’) from the EA spectrum. © 1994, Taylor & Francis Group, LLC. All rights reserved.
UR - https://www.tandfonline.com/doi/full/10.1080/10587259408039296
UR - http://www.scopus.com/inward/record.url?scp=84972973177&partnerID=8YFLogxK
U2 - 10.1080/10587259408039296
DO - 10.1080/10587259408039296
M3 - Article
SN - 1058-725X
VL - 256
JO - Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
JF - Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals
IS - 1
ER -