Pressure-induced energy level crossings and narrowing of photoluminescence linewidth in self-assembled InAlAs/AlGaAs quantum dots
نویسندگان
چکیده
We present a study of the hydrostatic-pressure dependence of the photoluminescence from In0.5Al0.5As/Al0.25Ga0.75As self-assembled quantum dots. Three distinct regions of quantum-dot peak-energy shift with pressure are observed and are attributed to energy level crossings and band mixing effects. In addition, a large reduction in photoluminescence linewidth with applied pressure is noted. © 1999 American Institute of Physics. @S0003-6951~99!01211-5#
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تاریخ انتشار 1999