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Identification of a nonradiative recombination center in GaAs (1992)

Michler, P. ; Hangleiter, A. ; Dieter, R. ; [et al.]

[S.l.] : American Institute of Physics (AIP)

Journal of Applied Physics 72 (1992), S. 4449-4451

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ISSN: 1089-7550

Source: AIP Digital Archive

Topics: Physics

Notes: We report on the identification of the CuGa acceptor level as a recombination center in GaAs. Using time-resolved photoluminescence (PL) we have studied the recombination of excess charge carriers in metalorganic vapor-phase epitaxy GaAs/AlGaAs double heterostructures. The recombination in one particular set of samples was clearly nonradiative and the trap level derived from our measurements coincides with that of CuGa as seen in the PL spectra. The temperature dependence of the capture coefficients is consistent with a multiphonon process and allows for the determination of the coupling strength for electron and hole capture.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1063/1.352184

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