This Letter describes the photoluminescence properties of ZnO nanoparticles enclosed in BN capsules (ZnO/BN core/shell structure). PL enhancement of over one thousand times of ZnO/BN compared to pure ZnO nanoparticles was observed, which is attributed to the dielectric environment effects of the capsule on the interfacial structures and defect amounts of ZnO quantum dots.
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Li et al. (2001) studied this question.
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