Structural and Optical Characterisation of Size-Selected Glutathione-Capped Colloidal Cu–In–S Quantum Dots


  • Y.M. Azhniuk Institute of Electron Physics, Nat. Acad. Sci. Ukraine
  • Ye.O. Havryliuk V. Lashkaryov Institute of Semiconductor Physics, Nat. Acad. Sci. Ukraine, Semiconductor Physics, Chemnitz University of Technology, Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology
  • B.V. Lopushanska Uzhhorod National University
  • V.V. Lopushansky Institute of Electron Physics, Nat. Acad. Sci. Ukraine
  • A.V. Gomonnai Institute of Electron Physics, Nat. Acad. Sci. Ukraine, Uzhhorod National University
  • D.R.T. Zahn Semiconductor Physics, Chemnitz University of Technology, Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology



quantum dots, colloidal synthesis, optical absorption, photoluminescence, X-ray diffraction, Raman spectroscopy


Size-selected series of copper-deficient colloidal Cu–In–S quantum dots (QDs) stabilized with glutathione are obtained by the exchange reaction in aqueous solutions under mild synthesis conditions. The optical bandgap and photoluminescence maximum position shift toward higher energies with decreasing QD size. Based on X-ray diffraction data, the QDs are assigned to a tetragonal chalcopyrite-type structure. The average size of QDs, estimated from the Scherrer formula and from the comparison with the absorption edge-based sizing curves, exhibits a fair agreement, being in the interval of 1.2–2.9 nm. The Raman spectra of Cu–In–S QDs are analyzed with the account for the QD structure, confinement-related effects, non-stoichiometry, and possible existence of secondary phases.


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How to Cite

Azhniuk, Y., Havryliuk, Y., Lopushanska, B., Lopushansky, V., Gomonnai, A., & Zahn, D. (2023). Structural and Optical Characterisation of Size-Selected Glutathione-Capped Colloidal Cu–In–S Quantum Dots. Ukrainian Journal of Physics, 68(3), 190.



Semiconductors and dielectrics