Detailed balance between impact ionizati
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A. Manassen; E. Cohen; A. Ron; E. Linder; L.N. Pfeiffer
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Article
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1998
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Elsevier Science
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English
β 76 KB
We studied the photoluminescence of (e1:hh1)1S excitons (X ) and negatively charged excitons (trions, X -) in quantum wells (QWs) having a low density (n e < 5 Γ 10 10 cm -2 ) two-dimensional electron gas (2DEG). Mixed type I-type II GaAs/AlAs quantum wells are studied in which the 2DEG is photogene