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- W2077157026 abstract "C-V measurements on normal isotype GaAs/Al0.3Ga0.7As heterojunctions grown via molecular beam epitaxy were undertaken in the temperature ranges between 300 and 4.2 K. For temperatures ≤100 K, we found a persistent conductivity effect due to the field emitted and then capture delayed electrons in the Si-doped Al0.3Ga0.7As layer. These capture-delayed free carriers lead to apparent increase of the base doping in the AlGaAs and consequent reappearance of the valley in the concentration-versus-distance profiles of the heterojunctions at temperatures ≤100 K. The resultant temperature dependence of the calculated conduction-band offsets and the interface-state densities were found to be an artefact. Apparent shifting of the heterointerface positions observed in inverted heterojunctions was not observed in the normal GaAs/AlGaAs heterojunctions. The normal heterostructure enabled us to distinguish and determine the concentration of each deep donor level." @default.
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- W2077157026 date "1991-12-01" @default.
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- W2077157026 title "Low-temperature <i>C</i>-<i>V</i> characteristics of Si-doped Al0.3Ga0.7As and normal <i>n</i>-GaAs/N-Al0.3Ga0.7As isotype heterojunctions grown via molecular beam epitaxy" @default.
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- W2077157026 doi "https://doi.org/10.1063/1.349811" @default.
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