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  1. 1 Acta Physica Polonica A

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  1. 1 1991

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  1. 1 Brehme S.

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Detection of Persisting Photoelectrons in AlGaAs Double Heterostructure Laser Diodes by DLTS

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Brehme S.
Acta Physica Polonica A
|
1991
|
vol. 79
|
issue 2-3
239-242
EN
LPE-made AlGaAs double heterostructure laser diodes having a Sn-doped n-type confinement layer were investigated. A significant change of the low-temperature part of DLTS spectra and C(T) curves was observed after applying forward or higher reverse voltage. Relaxation of the curves took several hours. This persistent photoconductivity phenomenon is explained by photoionization of the DX centres.
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