Luminescence tuning of Ce<sup>3+</sup>, Pr<sup>3+</sup> activated (Y,Gd)AGG system by band gap engineering and energy transfer

Journal article (2020)

Authors

Ou Ou Sun Yat-sen University
Zhou Zhou Sun Yat-sen University
Ma Ma Sun Yat-sen University
Liu Liu Sun Yat-sen University
Zhou Zhou Sun Yat-sen University
Su Su Sun Yat-sen University
Huang Huang Chinese Academy of Sciences
Dorenbos Dorenbos RST/Luminescence Materials - AS
Liang Liang Sun Yat-sen University
Research Group
RST/Luminescence Materials (AS) (TU Delft)
Energy transfer Garnet Rare earths Scintillation Band gap engineering
More Info
expand_more

Published Date

2020

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Applied Sciences

Department

RST/Radiation, Science and Technology

Research Group

RST/Luminescence Materials

Abstract

Tuning of phosphor luminescence properties, including the emission energy/intensity and thermal stability, is an important way to develop superior luminescent materials for diverse applications. In this work, we discuss the effect of band gap engineering and energy transfer on the luminescence properties of Ce3+ or Pr3+ doped (Y,Gd)AGG systems, and analyze the underlying reasons for their different phenomena. By using VUV-UV excitation spectra and constructing VRBE schemes, the changes of host band structure, 5d excited level energies and emission thermal stability of Ce3+ and Pr3+ with the incorporation of Gd3+ ions were studied. In addition, the energy transfer dynamics was also investigated in terms of the luminescence decay curves. This work demonstrates a way to tune phosphor luminescence properties by combining band gap engineering and energy transfer tailoring and provides an inspiring discussion on the different results of Gd3+ doping on the Ce3+ and Pr3+ emissions.