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The chemical adsorption of sodium sulphide, ferrocene, hydroquinone and p-methyl-nitrobenzene onto the surface of a GaAs/Al x Ga 1−x As multiquantum well semiconductor was characterized by steady state and time-resolved photoluminescence (PL) spectroscopy. The changes in the PL response, including the red shift of the emission peak of the exciton in the quantum well and the enhancement...
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