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Achieving high thermal stability of different rare earth ions in a single matrix host via manipulated the local structure by solid solution

Abstract

Thermal quenching seriously restricts the practical application of phosphors, especially under high temperature and long-term working conditions. Here, we demonstrate that the as-obtained series of solid solution of Ca2-xYxAl2Si1-xAlxO7: Tb3+ (x=0-1, Ca2Al2SiO7→CaYAl3O7) phosphors exhibit an adjustable optical performance, where CaYAl3O7: Tb3+ with a shortened bond distance of the related polyhedron exhibits a greatly improved thermal stability compared with Ca2Al2SiO7: Tb3+. The shrinked bond distance strengthens the pressure of local structure and suppresses the non-radiative transition effectively, contributing to the prevention of the thermal degradation. The formed phosphor possessing excellent structure stability could be effectively incorporation with various lanthanide ions (Eu3+, Tb3+, Sm3+, Dy3+, and Pr3+) to address a pleochroism output.

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Supplementary files

Article information


Submitted
04 Feb 2020
Accepted
25 Jun 2020
First published
25 Jun 2020

Phys. Chem. Chem. Phys., 2020, Accepted Manuscript
Article type
Paper

Achieving high thermal stability of different rare earth ions in a single matrix host via manipulated the local structure by solid solution

X. Yang, L. Zhao, Z. Liu, S. Tian, H. Zhang, X. Xu, J. Qiu and Y. X. Yu, Phys. Chem. Chem. Phys., 2020, Accepted Manuscript , DOI: 10.1039/D0CP00612B

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