The study of composition, structure and cathodoluminescent features of YAG:Eu3+ nanoceramics. Excitation capture efficiency of Eu3+ energy levels

The focus of this research paper is upon cathodoluminescent features of YAG:Eu3+ nanoceramics. The concentration series of samples was synthesized from nano powders using low temperature high pressure sintering technique. The composition of the samples has been studied using electron-probe microanalysis. The structure and the grain size of the samples have been studied by X-ray diffraction, scanning electron microscopy and electron backscattered diffraction. Cathodoluminescent study of the samples has been performed. The concentration dependence of cathodoluminescence intensity and kinetic dependencies of CL bands have been obtained. The excitation capture efficiency of the radiative energy levels was estimated based on cathodoluminescence intensity rise rate dependence on electron beam current density. Energy transfer mechanism between the energy levels will be discussed hereinafter. (C) 2020 Elsevier B.V. All rights reserved.

Automated summary

This research paper focuses on the cathodoluminescent features of YAG:Eu3+ nanoceramics. Samples with various concentrations were synthesized using low temperature high pressure sintering technique and analyzed using electron-probe microanalysis, X-ray diffraction, scanning electron microscopy, and electron backscattered diffraction. The cathodoluminescence intensity, kinetic dependencies of CL bands, and energy transfer mechanisms between energy levels were investigated.