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Electronic Structure of Processable Conducting Polymers

Lazzaroni, R. / Lögdlund, M. / Stafström, S. / Salaneck, W. R. / Bradley, D. D. C. / Friend, R. H. / Sato, N. / Orti, E. / Bredas, J. L.

Abstract The electronic structure of poly-3-hexylthiophene is studied in the solid state with photoelectron spectroscopy, as the polymer is gradually doped from NOPF6. The evolution of the core level binding energies is related to the modification of the electron density on the conjugated backbone, due to the creation of polaron and bipolaron defects. Upon doping, valence spectra show a shift in the Fermi level of the system, and at saturation doping a finite density of states is observed at the Fermi level. In the case of poly-para-phenylene vinylene, the experimental density of states of the neutral polymer is related to the results of Valence Effecttive Hamiltonian calculations. Comparison with gas phase data on styrene leads to an estimation of the polarization energy.

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Electronic Structure of Processable Conducting Polymers

Lazzaroni, R. / Lögdlund, M. / Stafström, S. / Salaneck, W. R. / Bradley, D. D. C. / Friend, R. H. / Sato, N. / Orti, E. / Bredas, J. L.

Abstract The electronic structure of poly-3-hexylthiophene is studied in the solid state with photoelectron spectroscopy, as the polymer is gradually doped from NOPF6. The evolution of the core level binding energies is related to the modification of the electron density on the conjugated backbone, due to the creation of polaron and bipolaron defects. Upon doping, valence spectra show a shift in the Fermi level of the system, and at saturation doping a finite density of states is observed at the Fermi level. In the case of poly-para-phenylene vinylene, the experimental density of states of the neutral polymer is related to the results of Valence Effecttive Hamiltonian calculations. Comparison with gas phase data on styrene leads to an estimation of the polarization energy.

Electronic Structure of Processable Conducting Polymers

Lazzaroni, R. / Lögdlund, M. / Stafström, S. / Salaneck, W. R. / Bradley, D. D. C. / Friend, R. H. / Sato, N. / Orti, E. / Bredas, J. L.

Abstract The electronic structure of poly-3-hexylthiophene is studied in the solid state with photoelectron spectroscopy, as the polymer is gradually doped from NOPF6. The evolution of the core level binding energies is related to the modification of the electron density on the conjugated backbone, due to the creation of polaron and bipolaron defects. Upon doping, valence spectra show a shift in the Fermi level of the system, and at saturation doping a finite density of states is observed at the Fermi level. In the case of poly-para-phenylene vinylene, the experimental density of states of the neutral polymer is related to the results of Valence Effecttive Hamiltonian calculations. Comparison with gas phase data on styrene leads to an estimation of the polarization energy.

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Title:

Electronic Structure of Processable Conducting Polymers

Contributors:

Lazzaroni, R. (author) / Lögdlund, M. (author) / Stafström, S. (author) / Salaneck, W. R. (author) / Bradley, D. D. C. (author) / Friend, R. H. (author) / Sato, N. (author) / Orti, E. (author) / Bredas, J. L. (author)

Published in:

Conjugated Polymeric Materials: Opportunities in Electronics, Optoelectronics, and Molecular Electronics ; 149-162

NATO ASI Series ; 182

Publication date:

1990-01-01

Size:

14 pages

ISBN:

978-94-010-7416-2 , 978-94-009-2041-5

ISSN:

DOI:

https://doi.org/10.1007/978-94-009-2041-5_11

Type of media:

Article/Chapter (Book)

Type of material:

Electronic Resource

Language:

English

Keywords:

Fermi Level , High Binding Energy , Vacuum Level , Polarization Energy , Ultraviolet Photoelectron Spectroscopy Chemistry , Industrial Chemistry/Chemical Engineering , Characterization and Evaluation of Materials , Organic Chemistry , Optics, Lasers, Photonics, Optical Devices

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