Izvestiya of Saratov University.
ISSN 1817-3020 (Print)
ISSN 2542-193X (Online)


upconversion luminescence

Effect of the Temperature of NaYF4 : Er,Yb Upсonversion Particles on the Formation of Luminescence

The intensity of upconversion luminescence depends nonlinearly on the excitation intensity. The aim of this work is to study the effect of the temperature of NaYF4:Er,Yb upconversion particles on the dependence of the luminescence intensity on the excitation intensity. The synthesized particles were observed to have the shape of a hexagonal prism with a width of about 440 nm and a height of 445 nm. The upconversion luminescence spectra were obtained in the temperature range of 22–55° C with the excitation intensity in the range of 1.5–9.4 W/cm2.

Effect of the temperature of NaYF4:Er,Yb upconversion particles on the formation of luminescence

The intensity of upconversion luminescence depends nonlinearly on the pump power intensity. The study of the dependence under various conditions is important, since it allows us to analyze the changes in the mechanisms of formation of the upconversion luminescence. The aim of this work is to study the effect of the temperature of NaYF4:Er,Yb upconversion particles on the dependence of the luminescence intensity on the intensity of the exciting radiation.