26 April 2018 Effects of post-synthesis nanocrystals treatment on the luminescence of cadmium-free quantum dots
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Abstract
In this contribution, we report an efficient synthesis of Cd-free Ag−In−S /ZnS (AIS/ZnS) quantum dots (QDs) using low toxic precursors and investigation of their optical properties. The nanocrystals (NCs) have been successfully obtained directly in aqueous media in the presence of thioglycolic acid (TGA) as stabilizing and reactivity-controlling agent. The coating with ZnS shell leads to the photoluminescence (PL) emission peak blue-shift and the emission intensity enhancement. In order to increase the quantum yield (QY) the nanocrystals were transferred to the organic phase; an influence by post-synthesis treatments of heating was investigated.
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Anastasiya S. Novikova, Anastasiya S. Novikova, Irina Yu. Goryacheva, Irina Yu. Goryacheva, } "Effects of post-synthesis nanocrystals treatment on the luminescence of cadmium-free quantum dots", Proc. SPIE 10716, Saratov Fall Meeting 2017: Optical Technologies in Biophysics and Medicine XIX, 107161G (26 April 2018); doi: 10.1117/12.2315124; https://doi.org/10.1117/12.2315124
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