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Proceedings Paper

Electron-hole separation distance during the charge carrier photogeneration in conjugated polymer
Author(s): Vidmantas Gulbinas; H. Baussler; A. Yartsev; Y. Zaushitsyn; V. Sundstroem
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Paper Abstract

Charge separation dynamics in a Ladder-Type Methyl substituted Poly(Para-Phenylene) (m-LPPP) was investgiated by means of electric filed modulated femtosecond pump-probe absorption spectroscopy. The Stark shift of the absorption band modified by created excitons and electron-hole pairs provided information about the average intrapair charge separation distance. The electron and hole initially separated by ca. 7 Å moved away from each other to more than 30 Å during 600 ps and later the separation rate decreased. Neither the initial separation distance, nor that obtained at 600 ps were found to depend on the applied electric field, only the separation rate at stronger field was slightly faster.

Paper Details

Date Published: 8 August 2003
PDF: 7 pages
Proc. SPIE 5122, Advanced Organic and Inorganic Optical Materials, (8 August 2003); doi: 10.1117/12.515659
Show Author Affiliations
Vidmantas Gulbinas, Institute of Physics (Lithuania)
H. Baussler, Philipps-Univ. Marburg (Germany)
A. Yartsev, Lund Univ. (Sweden)
Y. Zaushitsyn, Lunds Univ. (Sweden)
V. Sundstroem, Lund Univ. (Sweden)

Published in SPIE Proceedings Vol. 5122:
Advanced Organic and Inorganic Optical Materials
Andris Krumins; Donats Millers; Inta Muzikante; Andris Sternbergs; Vismants Zauls, Editor(s)

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