Effect of Mn²⁺ on Upconversion Emission, Thermal Sensing and Optical Heater Behavior of Yb³⁺ - Er³⁺ Codoped NaGdF₄ Nanophosphors.

ABSTRACT: In thiswork, we investigate the influence of Mn²⁺ on the emission color, thermal sensing and optical heater behavior of NaGdF₄: Yb/Er nanophosphors, which the nanoparticles were synthesized by a hydrothermal method using oleic acid as both a stabilizing and a chelating agent. The morphology and crystal size of upconversion nano particles (UCNPs) can be effectively controlled through the addition of Mn²⁺ dopant contents in NaGdF₄: Yb/Er system. Moreover, an enhancement in overall UCL spectra of Mn²⁺ doped UCNPs for NaGdF₄ host compared to the UCNPs is observed, which results from a closed back-energy transfer between Er³⁺ and Mn²⁺ ions (⁴S_3/2 (Er³⁺) → ⁴T_1<

SUBMITTER: Qiang Q 

PROVIDER: S-EPMC6562558 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature