Non-concentration quenching, good thermal stability and high quantum efficiency of K5Y(P2O7)2:Eu3+/Tb3+ phosphors with a novel two-dimensional layer structure

Our work provides a new host lattice K₅Y(P₂O₇)₂ for both Eu³⁺ and Tb³⁺ luminescence, with non-concentration quenching, a high IQE and good thermal stability.