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Green photoluminescence mechanism in ZnS nanostructures

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Abstract

ZnS Nanostructures, including nanoparticles and nanospheres, were synthesized through solvothermal process. The size and crystallinity of the ZnS nanostructures were easily controlled by the precursor source and the solvents. The photoluminescence (PL) in the range of 400–650 nm has been observed and the broad band is peaked at about 525 nm. The PL intensity reduced greatly with increasing the nanoparticle size of the as-prepared samples and the ratio of zinc and sulfur sources in the preparation process. Spectral examinations and analyses reveal that the 525 nm emission peak indeed originates from the electronic states determined by the zinc vacancies.

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Acknowledgements

This study was jointly supported by the Natural Science Foundation of Jiangsu Province (Grant no. BG2007026) and the National Natural Science Foundation of China (Grant no. 11004170).

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Authors and Affiliations

  1. College of Physics Science and Technology, Yangzhou University, 225002, Yangzhou, People’s Republic of China

    Haitao Chen, Yipei Hu & Xianghua Zeng

  2. National Laboratory of Solid State Microstructures, Nanjing University, 210093, Nanjing, People’s Republic of China

    Haitao Chen

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  1. Haitao Chen
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  2. Yipei Hu
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  3. Xianghua Zeng
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Correspondence to Xianghua Zeng.

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Chen, H., Hu, Y. & Zeng, X. Green photoluminescence mechanism in ZnS nanostructures. J Mater Sci 46, 2715–2719 (2011). https://doi.org/10.1007/s10853-010-5141-9

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  • DOI: https://doi.org/10.1007/s10853-010-5141-9

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