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Excitation and De-Excitation Mechanisms of Rare-Earth Ions in III-V Compounds: Optically Detected Microwave-Induced Impact Ionization of Yb Dopant in Inp

Published online by Cambridge University Press:  21 February 2011

T. Gregorkiewicz ,
B.J. Heijmink Liesertr ,
I. Tsimperidis ,
I. de Maat-Gersdorf ,
C.A.J. Ammerlaan ,
M. Godlewski  and
F. Scholz
T. Gregorkiewicz
Affiliation:
Van der Waals - Zeeman Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65-67, NL-1018 XE Amsterdam, The Netherlands
B.J. Heijmink Liesertr
Affiliation:
Van der Waals - Zeeman Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65-67, NL-1018 XE Amsterdam, The Netherlands
I. Tsimperidis
Affiliation:
Van der Waals - Zeeman Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65-67, NL-1018 XE Amsterdam, The Netherlands
I. de Maat-Gersdorf
Affiliation:
Van der Waals - Zeeman Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65-67, NL-1018 XE Amsterdam, The Netherlands
C.A.J. Ammerlaan
Affiliation:
Van der Waals - Zeeman Laboratorium, Universiteit van Amsterdam, Valckenierstraat 65-67, NL-1018 XE Amsterdam, The Netherlands
M. Godlewski
Affiliation:
Institute of Physics, Polish Academy of Sciences, Al. Lotników 32/46, PL-06-668 Warszawa, Poland
F. Scholz
Affiliation:
4 Physikalisches Institut, Universität Stuttgart, Pfaffenwaldring 57, D-7000 Stuttgart80, Germany
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Abstract

The excitation mechanisms of rare-earth dopants in III-V semiconductors are being reviewed. The discussion is focused on ytterbium-doped InP crystals for which a particularly large amount of experimental data has been gathered. Here, the results obtained recently by optically detected microwave-induced impact ionization are being examined in detail. On the basis of the experimental findings it is argued that the intrashell luminescence is excited by an intermediate state involving binding of an exciton. Direct evidence for the existence of such a state, of pseudoacceptor type, will be given. The nonradiative recombination channel responsible for the fast decay of Yb luminescence will also be discussed and, for the first time, evidence for an Auger process will be presented. It will also be shown that the nonradiative channel may be effectively blocked by impact ionization of a participating carrier.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 301: Symposium E – Rare-Earth Doped Semiconductors , 1993 , 239
Copyright
Copyright © Materials Research Society 1993

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References

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