DOI: 10.1063/1.479819. Geminate charge pair recombination in sensitized photoconducting polymer

Geminate charge pair recombination in sensitized photoconducting polymer

10.1063/1.479819

Crossref journal-article

AIP Publishing

The Journal of Chemical Physics (317)

Abstract

Recombination kinetics of the geminate charge pairs, generated by photoexcitation of charge transfer (CT) complexes in sensitized poly-N-epoxypropylcarbazole, have been investigated by transient absorption and time-resolved fluorescence techniques and modeled by Monte Carlo method. The quantitative agreement of simulations with experimental data is obtained by assuming the distance between the thermalized charge pairs to be several times longer than the typical distance between electron donor and acceptor in CT complexes. Faster recombination is observed in the films with higher sensitizer concentrations and explained by assuming that electron acceptor molecules act as scattering centers for hole motion during thermalization, thus reducing the thermalization distance. The dynamical blue shift of the fluorescence band and comparison of hole density with fluorescence kinetics suggest that heterogeneity of CT complexes results in different radiative probabilities and in distribution of the initial charge pair separation distances.

Bibliography

Abramavicius, D., Gulbinas, V., Ruseckas, A., Undzenas, A., & Valkunas, L. (1999). Geminate charge pair recombination in sensitized photoconducting polymer. The Journal of Chemical Physics, 111(12), 5611â5616.

Authors 5

D. Abramavicius (first)
V. Gulbinas (additional)
A. Ruseckas (additional)
A. Undzenas (additional)
L. Valkunas (additional)

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Dates

Type	When
Created	23 years, 1 month ago (July 26, 2002, 8:17 a.m.)
Deposited	1 year, 6 months ago (Feb. 6, 2024, 10:29 a.m.)
Indexed	1 year, 6 months ago (Feb. 10, 2024, 11:43 a.m.)
Issued	25 years, 11 months ago (Sept. 22, 1999)
Published	25 years, 11 months ago (Sept. 22, 1999)
Published Print	25 years, 11 months ago (Sept. 22, 1999)

Funders 0

None

BibTeX

@article{Abramavicius_1999, title={Geminate charge pair recombination in sensitized photoconducting polymer}, volume={111}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.479819}, DOI={10.1063/1.479819}, number={12}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Abramavicius, D. and Gulbinas, V. and Ruseckas, A. and Undzenas, A. and Valkunas, L.}, year={1999}, month=sep, pages={5611–5616} }

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