The solvent effect on luminescent properties of cadmium selenide quantum dotsстатья
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Дата последнего поиска статьи во внешних источниках: 24 октября 2018 г.
Аннотация:It has been shown that the synthesis of CdSe quantum dots using a mixture of p-octadecylphosphonic acid (ODPA) and trioctylphosphine oxide (TOPO) as stabilizing ligands makes it possible to obtain nanoparticles with good luminescence characteristics without overcoating an additional semiconductor shell. It has been found that ODPA used as a stabilizing ligand in a mixture with TOPO in the synthesis of CdSe quantum dots can facilitate the preparation of particles with good spectral and luminescent properties. The luminescence intensity of these particles is increased by storage them in the dispersed state in an organic solvent. The luminescence quantum yield depends on the dielectric constant of the medium, the average size of the quantum dots, and the time of their holding in the solvent.