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- W2177587027 abstract "In0.2Ga0.8As/GaAs strained quantum wells (SQWs) grown on As (111)A, (211)A and (311)A-oriented substrates have a built-in electric field due to the piezoelectric effect that shifts the photoluminescence (PL) peaks to longer wavelengths. This electric field was screened by photocarriers generated with an optical pulse and a blueshift of the PL peaks was observed. The PL peaks returned to longer wavelength as the carrier density and the field screening in the wells decreased with time. The PL decay time dependence on wavelength reflected the evolution of the photocarrier distribution in the well. We calculated the dependence of optical transition energies and degree of electron-hole wave function overlap on photocarrier density for (111)A-oriented SQWs. A model of the carrier dynamics in the well that successfully explains the experimental results is also presented." @default.
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- W2177587027 date "1995-01-01" @default.
- W2177587027 modified "2023-09-24" @default.
- W2177587027 title "Carrier Dynamics in Piezoelectric Quantum Wells Grown on GaAs (111)A, (211)A and (311)A Studied by Time Resolved Photoluminescence Spectroscopy" @default.
- W2177587027 doi "https://doi.org/10.7567/ssdm.1995.d-2-2" @default.
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