title: Polarized photoluminescence and spectral narrowing in an oriented polyfluorene thin film.
abstract: The oriented polyfluorene 1 is a promising candidate for a blue polarized emitter in organic optoelectronic devices. By examination of the anisotropic luminescence of thin films of 1, polarization-dependent spectral narrowing was found at high excitation densities, which is of particular interest in reducing the threshold for optically pumped polymer lasers. Femtosecond pump–probe experiments show optical gain at this spectral position.
authors.affiliation: Fachbereich Physik, Institut für Physikalische Chemie and Wissenschaftliches Zentrum für Materialwissenschaften, Philipps-Universität Marburg, Renthof 5, 35032 Marburg, Germany. bauerc@mailer.uni-marburg.de
authors.forename: C
authors.initials: C
authors.lastname: Bauer
authors.forename: G
authors.initials: G
authors.lastname: Urbasch
authors.forename: H
authors.initials: H
authors.lastname: Giessen
authors.forename: A
authors.initials: A
authors.lastname: Meisel
authors.forename: H G
authors.initials: HG
authors.lastname: Nothofer
authors.forename: D
authors.initials: D
authors.lastname: Neher
authors.forename: U
authors.initials: U
authors.lastname: Scherf
authors.forename: R F
authors.initials: RF
authors.lastname: Mahrt