Glutathione-Capped Quaternary Ag–(In,Ga)–S Quantum Dots Obtained by Colloidal Synthesis in Aqueous Solutions


  • Y.M. Azhniuk Institute of Electron Physics, Nat. Acad. Sci. Ukr.
  • O.V. Selyshchev Semiconductor Physics, Chemnitz University of Technology, Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology
  • Ye.O. Havryliuk Semiconductor Physics, Chemnitz University of Technology, Center for Materials, Architectures and Integration of Nanomembranes (MAIN), Chemnitz University of Technology, V. Lashkaryov Institute of Semiconductor Physics, Nat. Acad. Sci. Ukr.
  • B.V. Lopushanska Uzhhorod National University
  • A. Ehm Semiconductor Physics, Chemnitz University of Technology
  • V.V. Lopushansky Institute of Electron Physics, Nat. Acad. Sci. Ukr.
  • A.V. Gomonnai Institute of Electron Physics, Nat. Acad. Sci. Ukr., Uzhhorod National University
  • I.P. Studenyak 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



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


Ag–(In,Ga)–S quantum dots (QDs) were obtained by colloidal synthesis from aqueous solutions with different [In]/[Ga] precursor ratios in the presence of glutathione ligands under mild conditions. Size-selected fractions of the colloidal solutions were separated by the repeated centrifuging with addition of 2-propanol. The QD chemical composition determined by X-ray photoelectron spectroscopy is noticeably In-enriched with respect to the precursor ratio. The QD size estimated from the halfwidth of X-ray diffraction peaks for the non-fractioned colloidal solutions is about 2 nm. The synthesized QDs reveal a shift of the absorption edge and the photoluminescence (PL) peak maximum toward higher energies with decreasing the QD size. Experimentally measured Raman spectra of the Ag–(In,Ga)–S QDs are noticeably affected by size-related factors.


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How to Cite

Azhniuk, Y., Selyshchev, O., Havryliuk, Y., Lopushanska, B., Ehm, A., Lopushansky, V., Gomonnai, A., Studenyak, I., & Zahn, D. (2024). Glutathione-Capped Quaternary Ag–(In,Ga)–S Quantum Dots Obtained by Colloidal Synthesis in Aqueous Solutions. Ukrainian Journal of Physics, 69(4), 278.



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