Dipole reorientation in polymeric layers investigated by photo-induced current

  • D. Althausen
  • P. Wünsche
  • E. Peškova
Conference paper
Part of the Progress in Colloid & Polymer Science book series (PROGCOLLOID, volume 85)


Photo-induced currents were studied in poly(n-vinylcarbazole) (PVCa) without external electric field. A polarization of dipoles exists due to corona charging in PVCa. This polarization relaxes to thermal equilibrium after generation of quasi-free charges by a short flash and the transit of these charges through the photoconductor. The relaxation of dipoles causes an opposite anomalous current. For interpretation, a model is developed which takes into consideration a depolarization by dipole reorientation due to the decay of the electric field caused by the charge carrier transit. The measured time-dependence of the anomalous photocurrent can be interpreted by the numerical application of this model.

Key Words

Photo-induced current dpepolarization poly(n-vinylcarbazole) 


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  1. 1.
    Wintle HJ (1983) In: Bartnikas R, Eichhorn RM (eds) (1983) Engineering dielectrics volume IIA, Electrical properties of solid insulating materials, molecular structure and electrical behavior, American Society for Testing and Materials, PhiladelphiaGoogle Scholar
  2. 2.
    Zor M, Hogarth CA (1987) Phys Stat Sol (a) 99:513CrossRefGoogle Scholar
  3. 3.
    Kaneko F, Kobayashi S (1985) Electrical Enginering in Japan 105:18CrossRefGoogle Scholar
  4. 4.
    Kitani I, Arii K (1986) Jpn J Appl Phys 25:1332CrossRefGoogle Scholar
  5. 5.
    Mort J, Chen I, Emerald RL, Sharp Jh (1972) J Appl Phys 43:2285CrossRefGoogle Scholar
  6. 6.
    Spear WE (1957) Proc Phys Soc London B70:669Google Scholar
  7. 7.
    Muller-Horsche E, Haarer D, Scher H (1987) PHys Rev B 35:1273CrossRefGoogle Scholar
  8. 8.
    Overhof H, Thomas P (1989) Electronic Transport in Hydrogenated Amorphous Semiconductors, Springer Verlag, Berlin-Heidelberg-New YorkGoogle Scholar
  9. 9.
    Yoshino K, IEEE Trans EI-21:999Google Scholar
  10. 10.
    van Turnhout J (1975) Thermally Stimulated Discharge of Polymer Electrets, Elsevier, AmsterdamGoogle Scholar
  11. 11.
    Fleming RJ (1990) Radiat Phys Chem 36:59Google Scholar
  12. 12.
    Akuetey G, Hirsch J (1989) J Phys D 22:174CrossRefGoogle Scholar
  13. 13.
    Pochan JM, Hinman DF, Nash R (1975) J Appl Phys 46:4115CrossRefGoogle Scholar
  14. 14.
    Gill WD (1972) J Appl Phys 43:5033CrossRefGoogle Scholar
  15. 15.
    Ieda M (1984) IEEE Trans EI-19:162Google Scholar
  16. 16.
    Schmidlin FW (1977) Phys Rev B 16:2362CrossRefGoogle Scholar
  17. 17.
    Scher H, Montroll EW (1975) Phys Rev B 12:2455CrossRefGoogle Scholar
  18. 18.
    Bos FC, Guion T, Burland DM, Phys Rev B 39:12633Google Scholar
  19. 19.
    Stolzenburg F, Ries B, Bässler H (1987) Ber Bunsenges Phys Chem 91:853Google Scholar
  20. 20.
    Bässler H (1989) 9. Tagung Polymerphysik, PotsdamGoogle Scholar
  21. 21.
    Wünsche P, Althausen D (1990) Macromol Chem, Macromol Symp 37:27Google Scholar
  22. 22.
    Koy U (1990) unpublished results, University LepizigGoogle Scholar
  23. 23.
    Hoegl H, Süs O, Neugebauer W (1957) Ger Pat 1111935, 1068115Google Scholar
  24. 24.
    Shattuch MD, Vahtra U (1969) US Pat 3484237Google Scholar
  25. 25.
    Sessler GM (ed) (1987) Electrets, Springer Verlag, Berlin-Heidelberg-New YorkGoogle Scholar
  26. 26.
    see for example Duke CB (1982) In: Kirk-Othmer Encyclopedia of chemical technology, John Wiley & Sons, IncGoogle Scholar
  27. 27.
    Peasson JM, Stolka M (1981) Poly(N-Vinylcarbazole), Gordon and Breach Sci Publ, New YorkGoogle Scholar

Copyright information

© Dr. Dietrich Steinkopff Verlag GmbH & Co. KG 1991

Authors and Affiliations

  • D. Althausen
    • 1
    • 3
  • P. Wünsche
    • 1
  • E. Peškova
    • 1
    • 2
  1. 1.Department of PhysicsUniversity LeipzigGermany
  2. 2.Institute of Macromolecular ChemistryCzechoslovak Academy of SciencesCzechoslovakia
  3. 3.Sektion PhysikUniversität LeipzigLeipzigFRG

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