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Hydrothermal preparation of ZnS: Mn quantum dots and the effects of reaction temperature on its structural and optical properties

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Abstract

In this paper, the structural and optical properties of ZnS: Mn (0.6 at.%) quantum dots (QDs) synthesized by hydrothermal method at different reaction temperature were reported. X-ray diffraction patterns indicated that the ZnS: Mn QDs had cubic structure, and the average grain size increased from 3.75 to 6.36 nm with rising reaction temperature. Scanning electron microscope and transmission electron microscopy images revealed that the small grain size made samples poor dispersion. Also, we provided Fourier transform infrared spectroscopy spectra of the ZnS: Mn QDs to investigate components information. Further, optical properties of ZnS: Mn QDs were found to be affected by quantum confinement effect and specific surface area. The optical energy gap increased from 3.2 to 3.5 eV with the decrease of reaction temperature. Moreover, photoluminescence emissions of all samples showed the blue shift of position and the increase of emissions intensity with decreasing reaction temperature.

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Acknowledgements

This work was supported by National Natural Science Foundation of China (51671216).

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Authors and Affiliations

  1. College of Optoelectronic Technology, Chengdu University of Information Technology, Chengdu, 610225, China

    Yun Hu, Bo Wu & Zhaorong Wei

  2. China Special Equipment Inspection & Research Institute, Beijing, 100013, China

    Bin Hu

  3. College of Intelligent Manufacturing, Sichuan University of Arts and Science, Dazhou, 635000, China

    Jitao Li

Authors
  1. Yun Hu
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  2. Bin Hu
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  3. Bo Wu
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  4. Zhaorong Wei
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  5. Jitao Li
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Contributions

YH and JL conceived the study, completed the experiments, and wrote the paper; BH completed the literature search and helped the study design; BW and ZW characterized the data and collected the data.

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Correspondence to Yun Hu or Jitao Li.

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Hu, Y., Hu, B., Wu, B. et al. Hydrothermal preparation of ZnS: Mn quantum dots and the effects of reaction temperature on its structural and optical properties. J Mater Sci: Mater Electron 29, 16715–16720 (2018). https://doi.org/10.1007/s10854-018-9764-y

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  • DOI: https://doi.org/10.1007/s10854-018-9764-y

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