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Updated: Jul 17, 2026

Synthesis of Core-shell Lanthanide-doped Upconversion Nanocrystals for Cellular Applications
Published on: November 10, 2017
[Preparation and luminescence properties of core-shell ZnS : Cu/ZnS nano-particles]
Li-xin Cao1, Da-ke Sun, Ying-xia Lin
1Institute of Materials Sciences and Engineering, Ocean University of China, Qingdao 266003, China.
Abstract:
Core-shell structured ZnS : Cu/ZnS nano-particles and Cu2+ -doped ZnS nano-particles without any shell were prepared, and the effect of ZnS shell on the luminescence properties of ZnS : Cu2+ nano-particles was studied. The observed emission peak at 450 nm was assigned to the recombination of an electron from the shallow delocalized donor levels at the t2 level of Cu2+. The ZnS shell did enhance the luminescence at 450 nm, which resulted from the reduction of nonradiative recombination sites.

