Ultra-small aqueous glutathione-capped Ag–In–Se quantum dots: luminescence and vibrational properties
Oleksandra Raievska, Oleksandr Stroyuk, Volodymyr Dzhagan, Dmytro Solonenko, Dietrich R. T. Zahn
Abstract
) reaching 4% for "core" AISe and 12% for "core/shell" AISe/ZnS QDs. The shape and position of PL bands is interpreted in terms of the model of radiative recombination of a self-trapped exciton. The AISe-GSH QDs reveal phonon Raman spectra characteristic for small and Ag-deficient tetragonal Ag-In-Se QDs. The ability of ultra-small AISe QDs to support such "bulk-like" vibrations can be used for future deeper insights into structural and optical properties of this relatively new sort of QDs.
Topics & Concepts
LuminescenceQuantum dotAqueous solutionMaterials scienceChemistryPhotochemistryNanotechnologyOptoelectronicsPhysical chemistryQuantum Dots Synthesis And PropertiesChalcogenide Semiconductor Thin FilmsNanocluster Synthesis and Applications