Ionics

, Volume 3, Issue 5–6, pp 412–419 | Cite as

In-situ formation of local inhomogeneities in semiconductors

  • M. Klingler
  • W. F. Chu
  • W. Weppner
Article

Abstract

The transport properties of ionic conductors such as α-AgI and Li0.23La0.69Fe0.3Ti0.7O3 and of electronically conducting semiconductors such as α-Ag2S and AgxWO3 as a result of the application of voltages smaller than the decomposition voltage by two ionically blocking electrodes were investigated. The mobile ionic as well as the mobile electronic species are shifted from one electrode side to the other one. The change in the stoichiometric composition within the sample as a result of this transport process causes the formation of local inhomogeneities leading to changes in the electrical and optical properties. The experimental results also show that Nernst's law is not only valid for ionic conductors but also for semiconductors as well when a steady state is reached for ionically blocking electrodes.

Keywords

Physical Chemistry Analytical Chemistry Steady State Optical Property Electronic Material 

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7. References

  1. [1]
    W. Weppner, Z. Naturforsch.31a, 1336 (1976).Google Scholar
  2. [2]
    W. Weppner, Journal of Solid State Chemistry20, 305 (1977).CrossRefGoogle Scholar
  3. [3]
    W. Weppner, Electrochimica Acta22, 721 (1977).CrossRefGoogle Scholar
  4. [4]
    W. Weppner, Verfahren zur Änderung der lokalen atomaren Zusammensetzung von Festkörpern, insbesondere Halbleitern, German Patent Application P3503 264.2–43 (31.1.1985); M. Klingler and W. Weppner, Appl. Phys.A59, 239 (1994).Google Scholar
  5. [5]
    M. Klingler, W.F. Chu and W. Weppner, to be published.Google Scholar
  6. [6]
    M. Klingler, W.F. Chu and W. Weppner, Solar Energy Materials and Solar Cells39, 247 (1995).CrossRefGoogle Scholar
  7. [7]
    C. Wagner, J. Chem. Phys.21, 1819 (1953); H. Schmalzried, M. Ullrich and H. Wysk, Solid State Ionics51, 91 (1992).Google Scholar
  8. [8]
    C. Tubandt and H. Reinhold, Z. Elektrochem.37, 589 (1931).Google Scholar
  9. [9]
    W.F. Chu, H. Rickert and W. Weppner, Proceedings of the Advance Study Institute “Fast ion transport in solids, solid state batteries and devices” (Belgirate, 5–15 Sept. 1972), p. 181, Amsterdam: North-Holland Publ. Comp. 1973.Google Scholar
  10. [10]
    Y. Inaguma, L. Chen, M. Itoh and T. Nakamura, Solid State Ionics70/71, 196 (1994).CrossRefGoogle Scholar
  11. [11]
    M. Klingler, PhD Thesis, Christian-Albrechts University, Kiel, Germany, 1998.Google Scholar

Copyright information

© IfI - Institute for Ionics 1997

Authors and Affiliations

  • M. Klingler
    • 1
  • W. F. Chu
    • 1
  • W. Weppner
    • 1
  1. 1.Chair for Sensors and Solid State Ionics Technical FacultyChristian-Albrechts UniversityKielGermany

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