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UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives

Title data

Köhler, Anna ; dos Santos, D. A. ; Beljonne, David ; Shuai, Z. ; Bredas, J.-L. ; Friend, Richard H. ; Moratti, S. C. ; Holmes, Andrew B.:
UV photocurrent spectroscopy in poly(p-phenylene vinylene) and derivatives.
In: Synthetic Metals. Vol. 84 (1997) Issue 1-3 . - pp. 675-676.
ISSN 0379-6779
DOI: https://doi.org/10.1016/S0379-6779(96)04104-5

Abstract in another language

We present photocurrent measurements of poly(p-phenylene vinylene) (PPV) and derivatives for photon energies up to 5.0 eV. We observe photocurrent peaks related to the first, second and third absorption peaks, which we associate with the dissociation of a succession of increasingly energetic excitons. We have performed INDO/SCI calculations for the five-ring PPV oligomer, which show different distributions of the electronic charge of the exciton wavefunction over the chain at different excitation energies. We discuss the significance of these states for the photoconduction in PPV and question the applicability of a band-based model.

Further data

Item Type: Article in a journal
Refereed: No
Keywords: Photoconductivity; Poly(phenylene vinylene) and derivatives; Semi-empirical models and model calculations
Institutions of the University: Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie - Univ.-Prof. Dr. Anna Köhler
Faculties
Faculties > Faculty of Mathematics, Physics und Computer Science
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics
Faculties > Faculty of Mathematics, Physics und Computer Science > Department of Physics > Lehrstuhl Experimentalphysik II - Optoelektronik weicher Materie
Result of work at the UBT: No
DDC Subjects: 500 Science > 530 Physics
Date Deposited: 18 Mar 2015 10:24
Last Modified: 18 Mar 2015 10:24
URI: https://eref.uni-bayreuth.de/id/eprint/8485