Electron-hole separation distance during the charge carrier photogeneration in conjugated polymer

Vidmantas Gulbinas; H. Baussler; A. Yartsev; Y. Zaushitsyn; V. Sundstroem

doi:10.1117/12.515659

8 August 2003 Electron-hole separation distance during the charge carrier photogeneration in conjugated polymer

Vidmantas Gulbinas, H. Baussler, A. Yartsev, Y. Zaushitsyn, V. Sundstroem

Proceedings Volume 5122, Advanced Organic and Inorganic Optical Materials; (2003) https://doi.org/10.1117/12.515659
Event: 2003 Chapter books, 2003, Bellingham, WA, United States

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.

Citation Download Citation

Vidmantas Gulbinas, H. Baussler, A. Yartsev, Y. Zaushitsyn, and V. Sundstroem "Electron-hole separation distance during the charge carrier photogeneration in conjugated polymer", Proc. SPIE 5122, Advanced Organic and Inorganic Optical Materials, (8 August 2003); https://doi.org/10.1117/12.515659

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