Spectral properties of ultrasmall CdS nanoparticles stabilized by mercaptoacids and hydrazine

Dmytro Solonenko, A.E. Raevskaya, O.L. Stroyuk, S.Y. Kuchmiy

    Research output: Contribution to journalConference article

    Abstract

    Ultrasmall colloidal CdS quantum dots (QDs) were synthesized in water at room temperature by using a combination of two low-molecular-weight stabilizers – hydrazine and a mercaptoacid, particularly, mercaptoacetic and mercaptopropionic-2 acids. The average size of QDs was found to depend on the Cd-to-S ratio at the synthesis and be as small as 2,5 nm at 80% cadmium(II) excess. The CdS QDs emit broadband photoluminescence in the visible spectrum range with a relative quantum yield of around 5% and the radiative life time of around 100 ns.
    Original languageEnglish
    JournalTechnica UTM
    Publication statusPublished - 2013

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