Journal
PHYSICAL CHEMISTRY CHEMICAL PHYSICS
Volume 22, Issue 28, Pages 16294-16300Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0cp00612b
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Funding
- National Nature Science Foundation of China (NSFC) [61965012, 11664022]
- Excellent Youth Project of Yunnan Province Applied Basic Research Project [2019FI001]
- Reserve talents project of Yunnan Province [2017HB011]
- Yunnan Ten Thousand Talents Plan Young AMP
- Elite Talents Project [YNWR-QNBJ-2018-295, YNWR-QNBJ-2018-325]
- Foundation of Yunnan Province [2019HC016]
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Thermal quenching seriously restricts the practical application of phosphors, particularly under high temperature and long-term working conditions. Here, we demonstrate that the as-obtained series of solid solutions of Ca2-xYxAl2Si1-xAlxO7:Tb3+(x= 0-1, Ca2Al2SiO7 -> CaYAl3O7) phosphors exhibit an adjustable optical performance, where CaYAl3O7:Tb(3+)exhibits a greatly improved thermal stability with a shortened bond distance of the related polyhedron compared with Ca2Al2SiO7:Tb3+. The shrunken bond distance strengthens the pressure of the local structure and suppresses the non-radiative transition effectively, contributing to the prevention of the thermal degradation. The formed phosphor with excellent structural stability could be effectively incorporated with various lanthanide ions (Eu3+, Tb3+, Sm3+, Dy3+, and Pr3+) to address a pleochroism output.
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