A novel red-emitting K5La(MoO4)4:Eu3+ phosphor with a high quantum efficiency for w-LEDs and visualization of latent fingerprints

Cationic composition engineering in double perovskite XLaLiTeO6:Eu3+(X = Ba, Sr, Ca, and Mg) toward efficient and thermally stable red luminescence for domestic white-LEDs

“…The high QE (95.9%) and excellent thermal stability (86.3%@150 °C) of MLLT:Eu 3+ make it one of the best Eu 3+ doped phosphors until now, which is superior to the commercial Y 2 O 3 :Eu 3+ (QE = 83.4%, 67.9%@150 °C) and Y 2 O 2 S:Eu 3+ (QE = 68.7%, 38.9%@150 °C) phosphors and some reported red phosphors, such as K 5 La(MoO 4 ) 4 :Eu 3+ (QE = 84.5%, 74%@150 °C), GdGaTi 2 O 7 :Eu 3+ (QE = 71%, 61%@150 °C) and Ca 2 InNbO 6 :Eu 3+ (QE = 87%, 74.9%@150 °C). 15,59–63…”

A Novel Zero-Thermal-Quenching Red Phosphor with High Quantum Efficiency and Color Purity

“…In a large number of phosphors with different matrix, rare earth doped molybdate has shown a great application potential in red phosphors for w-LED. For example, La 2 (MoO 4 ) 3 : Eu 3+ [20] phosphors have been found to have good red luminescence properties and an excellent thermal stability; BaY 2 (MoO 4 ) 4 : Eu 3+ [21] phosphors exhibit a stable red emission with high quantum efficiency; K 5 La(MoO 4 ) 4 : Eu 3+ [22] phosphors show a high quantum efficiency and potential applications in fingerprint detection. In addition, studies have indicated that the phosphors could present excellent luminescent properties by using nonluminescent centers such as La, Y, and Gd, which have the same valence state and similar ionic radius as the matrix component or co-doped ions [23][24][25].…”