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- W1989332134 abstract "We report on dynamics of excitons in CdxZn1−xTe/ZnTe quantum dots (QDs) and present information of excitonic transport and recombination. Due to different growth methods, samples with different QD's densities were obtained. Time-resolved measurements reveal three decay mechanisms: (i) radiative recombination of excitons in the individual QDs; (ii) thermally activated escape of excitons and (iii) escape due to tunneling (hopping). In the high QD-density samples the hopping (rHB=2700 ns−1) is two orders of magnitude more efficient than in the low QD-density samples (rHB=33 ns−1). Radiative recombination rates are similar in both types of samples, rR=1–1.3 ns−1. Due to the good radiative to nonradiative recombination ratio, the low-density QDs can be a potential source of entangled photon pairs." @default.
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- W1989332134 date "2005-02-01" @default.
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- W1989332134 title "Influence of quantum dot density on excitonic transport and recombination in CdZnTe/ZnTe QD structures" @default.
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- W1989332134 doi "https://doi.org/10.1016/j.ssc.2004.11.032" @default.
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