Open AccessAgInS2/ZnS nanocrystals as an active medium for cobalt detection
Author(s) -
O. A. Korepanov,
D. S. Mazing,
О.В. Александрова,
В. А. Мошников
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1400/5/055045
Subject(s) - photoluminescence , chalcogenide , nanocrystal , ternary operation , cobalt , quenching (fluorescence) , materials science , aqueous solution , ion , analytical chemistry (journal) , fluorescence , chemistry , nanotechnology , optoelectronics , physics , optics , metallurgy , computer science , organic chemistry , chromatography , programming language
In this work, the effect of photoluminescence (PL) quenching of ternary chalcogenide AgInS2 nanocrystals (NCs), as well as the core/shell structure, with variation of the cobalt ions (Co 2+ ) concentration in aqueous solution, was studied. The quenching effect is described using the Stern-Volmer equation. The PL spectra were modelled in the range of 450–800 nm using four Gaussian functions, which makes it possible to identify several bands of the PL spectrum.