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Structure and optical properties of Zn0.99−xCdxMn0.01S quantum dots

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Abstract

Wurtzite-type Zn0.99−xCdxMn0.01S quantum dots (QDs) were synthesized facilely by the one-step solvothermal method. The as-prepared QDs had an average diameter of 4.0 ± 1.0 nm. The composition of the QDs was adjusted by controlling the Zn/Cd molar ratios. The successive shift of the XRD and PL patterns indicated that the QDs obtained were not a mixture of ZnS and CdS, but the Zn1−xCdxS solid solution. The red emission peak (coming from the cadmium vacancies), the yellow–orange emission peak (coming from the Mn2+ ions), and the green emission peak (coming from the intrinsic near band edge) were observed in the PL spectra, the intensity and position of which can be turned by controlling the Zn/Cd molar ratios effectively.

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Acknowledgment

This work was financially supported by the National Programs for High Technology Research and Development of China (863) (Item No. 2013AA032202), the National Natural Science Foundation of China (Grant No. 61008051, 61178074, 11204104, 11254001, 61378085, 61308095).

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Authors and Affiliations

  1. Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun, 130033, People’s Republic of China

    Donglai Han & Shuo Yang

  2. University of Chinese Academy of Sciences, Beijing, 100049, People’s Republic of China

    Donglai Han & Shuo Yang

  3. Key Laboratory of Functional Materials Physics and Chemistry of the Ministry of Education, Jilin Normal University, Siping, 136000, People’s Republic of China

    Jian Cao, Jinghai Yang, Qianyu Liu, Tingting Wang & Haifeng Niu

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  1. Donglai Han
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  2. Jian Cao
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  3. Shuo Yang
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  4. Jinghai Yang
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  5. Qianyu Liu
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  6. Tingting Wang
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  7. Haifeng Niu
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Correspondence to Jian Cao or Jinghai Yang.

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Han, D., Cao, J., Yang, S. et al. Structure and optical properties of Zn0.99−xCdxMn0.01S quantum dots. J Mater Sci: Mater Electron 26, 2205–2209 (2015). https://doi.org/10.1007/s10854-015-2669-0

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  • DOI: https://doi.org/10.1007/s10854-015-2669-0

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