TITLE

Extremely high negative photoconductivity in p-modulation-doped GaAs quantum wells

AUTHOR(S)
Höpfel, R. A.
PUB. DATE
March 1988
SOURCE
Applied Physics Letters;3/7/1988, Vol. 52 Issue 10, p801
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
In p-modulation-doped quantum wells of GaAs/AlGaAs extremely high negative photoconductivity is observed at low temperatures. The in-plane sheet resistance can be increased by a factor of more than 60 with illumination of less than 1 W/cm2. Spectral analysis shows that the effect is mainly due to hole trapping in the potential minima of AlGaAs and subsequent recombination of minority electrons.
ACCESSION #
9826181

 

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