Preparation of core–shell structured NaYF₄:Yb³⁺/Tm³⁺@NaYF₄:Yb³⁺/Er³⁺ nanoparticles with high sensitivity, low resolution and good reliability and application of their fluorescence temperature properties

Abstract

By doping Tm 3+ and Er 3+ with core–shell partitioning, not only a significant increase in fluorescence intensity could be achieved, but also simultaneous temperature measurements on multiple thermocouple energy levels could be realised.