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Infrared Photospectroelectrochemistry of Germanium/Pedot/Electrolyte Interfaces

  • Helmut Neugebauer (a1), Teketel Yohannes (a1) and N. Serdar Sariciftci (a1)

Abstract

Difference infrared spectra between illumination and dark of a polyethylenedioxythiophene (PEDOT) covered germanium electrode in contact with the electrolyte solution and under applied potential are shown. The spectra show a different behavior at different redox (doping) states of the polymer. The photoinduced formation of positive charge carriers was found by illumination of the neutral (undoped) form, wheras no significant spectral changes occur in the oxidized (p-doped) and reduced (n-doped) form of PEDOT.

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1. Glenis, S., Tourillon, G., and Garnier, F., Thin Solid Films 122, 9 (1984).
2. Yohannes, Teketel and Inganäs, O., Synth. Met. 107, 99 (1999).
3. Neugebauer, H. and Ping, Z., Microchim. Acta [Suppl.] 14, 125 (1997).
4. Neugebauer, H., Macromol. Symp. 94, 61 (1995).
5. Kvarnström, C., Neugebauer, H., Ivaska, A., Sariciftci, N.S., J. Molec. Struct., in press
6. Yohannes, Teketel and Inganäs, O., J. Electrochem. Soc. 143, 2310 (1996).
7. Yohannes, Teketel, unpublished results.

Infrared Photospectroelectrochemistry of Germanium/Pedot/Electrolyte Interfaces

  • Helmut Neugebauer (a1), Teketel Yohannes (a1) and N. Serdar Sariciftci (a1)

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