Cation vacancy-boosted BaZnB₄O₈:xEu³⁺ phosphors with high quantum yield and thermal stability for pc-WLEDs

Abstract

A novel BaZnB4O8:xEu3+ phosphor with high quantum yield (QY = 76.5%) and thermal stability (82.8%@150 °C) for pc-WLEDs was prepared by cation vacancy engineering.

A novel Eu3+ activated Ca3Zn3Te2O12 tellurate red phosphor for white LEDs with high color stability and color purity

“…Compared with other rare earth ions, Eu 3+ will undergo 5 D 0 → 7 F J ( J = 1, 2, 3, and 4) electric dipole transition due to the excitation of UV or NUV light, resulting in a narrow red emission band in the range of 590–710 nm, which is why we choose Eu 3+ as the activator. 5 In recent years, Eu 3+ activated phosphors have been widely studied, for example, Ca 3 Al 2 Ge 3 O 12 :Eu 3+ , 6 LaSc 3 (BO 3 ) 4 :Eu 3+ , 7 Ca 3 Zr 2 SiGa 2 O 12 :Eu 3+ , 8 BaZnB 4 O 8 :Eu 3+ , 9 GdNb 2 VO 9 :Eu 3+ , and so on. 10 The luminescence performance of rare earth doped materials strongly depends on the type of substrate material.…”

Strategic Investigation of Dual-Mode Light Emission from Tm3+/Ho3+/Yb3+-Activated NaLa(MoO4)2 Phosphors for Color Tunability and Optical Temperature Sensing Applications

“…Lanthanide (Ln) 3+ -doped phosphors are explored as potential thermal probes as their narrow emission bands cover the entire electromagnetic spectrum with high quantum yield (>50%). , In recent years, many Ln 3+ -doped phosphor thermometers were reported covering the temperature range from cryogenic ( T < 100 K) to high temperatures (300 K < T < 600 K). One of the essential classes of phosphors studied for thermometry is molybdates.…”