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Optical Characterization of Zn_(0.48)Cd_(0.52)Se/Zn_(0.24)Cd_(0.18)Mg_(0.58)Se Asymmetric Coupled Quantum Well Structure
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並列摘要
A Zn_(0.48)Cd_(0.52_Se/Zn_(0.24)Cd_(0.18)Mg_(0.58)Se asymmetric coupled quantum well structure was characterized by temperature dependent photoluminescence (PL) in the range of 10-300 K. PL emission dominated by an excitonic recombination behavior was observed. The activation energy was determined by an Arrhenius plot of the integrated PL emission intensity as a function of temperature. The temperature dependencies of the PL energy were analyzed using the Varshni and Bose-Einstein expressions in the temperature range from 10 to 300 K. The parameters that describe the temperature variations and broadening function are evaluated and discussed.
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