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Formation of AgInS2/ZnS Colloidal Nanocrystals and Their Photoluminescence Properties

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Abstract

Colloidal nanocrystals of AgInS2 were synthesized in aqueous solution using L-glutathione as a ligand. Wider bandgap semiconductor ZnS shell was deposited on the nanocrystal cores in order to enhance luminescence properties and stability. Thus prepared nanocrystals generally had an asymmetric multiple band emission spectrum. Variation of cation ratio [Ag+] to [In3+] led to a variation in the spectrum so that raising indium content caused an intensity increase of longer wavelength emission band. Photoluminescence and absorption spectroscopies, transmission electron microscopy, X-ray diffractometry, X-ray photoelectron spectroscopy were used for the sample characterization.

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ACKNOWLEDGMENTS

Authors are thankful to N.V. Sharenkova from Ioffe Physical-Technical Institute of the Russian Academy of Sciences for XRD studies.

The XPS experiment was conducted using the equipment of the Research park of St. Petersburg State University “Physical methods of surface investigation.”

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Authors and Affiliations

  1. St. Petersburg Electrotechnical University ETU LETI, St. Petersburg, Russia

    O. A. Korepanov, D. S. Mazing, O. A. Aleksandrova & V. A. Moshnikov

  2. St. Petersburg State University, St. Petersburg, Russia

    A. S. Komolov & E. F. Lazneva

  3. Ioffe Institute, St. Petersburg, Russia

    D. A. Kirilenko

Authors
  1. O. A. Korepanov
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  2. D. S. Mazing
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  3. O. A. Aleksandrova
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  4. V. A. Moshnikov
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  5. A. S. Komolov
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  6. E. F. Lazneva
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  7. D. A. Kirilenko
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Correspondence to O. A. Korepanov.

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Korepanov, O.A., Mazing, D.S., Aleksandrova, O.A. et al. Formation of AgInS2/ZnS Colloidal Nanocrystals and Their Photoluminescence Properties. Phys. Solid State 61, 2325–2328 (2019). https://doi.org/10.1134/S1063783419120217

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  • DOI: https://doi.org/10.1134/S1063783419120217

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