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- W2001261401 abstract "We have observed charged excitons in undoped GaAs/Al0.25Ga0.75As multiple quantum wells of differing well sizes. Photoluminescence(PL) originated from each well shows a double peak associated with the neutral exciton and the charged exciton whose existence is due to a charge imbalance of photogenerated carriers in each well. The laser-power dependence and circular polarization characteristics of PL readily identifies the negatively charged exciton(X−) in wide wells where an excess electron can exist. The binding energy of electron in the singlet state of X−, the so-called trion binding energy, increases with the magnetic field. For a 19nm quantum well, it is 1.2 meV and 1.9 meV at B=0 T and ∼ 9T, respectively." @default.
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- W2001261401 date "1999-03-01" @default.
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- W2001261401 title "Magnetophotoluminescence investigations of charged excitons in GaAs/(Al,Ga)As quantum wells" @default.
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- W2001261401 doi "https://doi.org/10.1016/s0038-1098(99)00007-1" @default.
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