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Experimental Analysis of the Spontaneous Polarization Field in GaN by UHV-cathodoluminescence

Published online by Cambridge University Press:  01 February 2011

Martina Finke ,
Daniel Fuhrmann ,
Uwe Rossow  and
Andreas Hangleiter
Martina Finke
Affiliation:
martina.finke@tu-bs.de, TU Braunschweig, Inst. für Angewandte Physik, Mendelssohn Str.2, Braunschweig, 38106, Germany
Daniel Fuhrmann
Affiliation:
d.fuhrmann@tu-bs.de, TU Braunschweig, Inst. für Angewandte Physik, Mendelssohnstr.2, Braunschweig, 38106, Germany
Uwe Rossow
Affiliation:
u.rossow@tu-bs.de, TU Braunschweig, Inst. für Angewandte Physik, Mendelssohnstr.2, Braunschweig, 38106, Germany
Andreas Hangleiter
Affiliation:
a.hangleiter@tu-bs.de, TU Braunschweig, Inst. für Angewandte Physik, Mendelssohnstr.2, Braunschweig, 38106, Germany
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Abstract

Cathodoluminescence spectra of GaInN quantum well structures show a strong change of intensity and a emission energy shift during electron beam irradiation. Measurements on samples with quantum well positions varying in depth show, that the spontaneous field, witch is usually screened by surface charges, penetrates the sample in a timescale of minutes and reduces the quantum confined Stark effect.

Keywords

III-Velectron irradiationGa
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 955: Symposium I – Advances in III-V Nitride Semiconductor Materials and Devices , 2006 , 0955-I09-04
Copyright
Copyright © Materials Research Society 2007

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References

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