An Al³⁺-incorporated Ca₂LuNbO₆:Mn⁴⁺ oxide phosphor with dramatic deep-red and far-red emission bands

Abstract

The novel Al3+-incorporated Ca2LuNbO6:Mn4+ oxide phosphors with double-perovskite structure were successfully prepared by the high-temperature solid state reaction. Excited with 355 nm ultraviolet light, the Ca2LuNbO6:Mn4+ samples mainly showed a...

A highly efficient deep red-emitting Mn4+-powered oxyfluoride nanophosphor developed for plant growth and optical thermometric applications

“…The resultant AE, IQE, and EQE values are estimated to be ∼53%, ∼77%, and ∼41%, respectively. These obtained values are either comparable or superior to several recently reported Mn 4+ -doped phosphors, which were proposed for indoor plant growth applications, such as Ca 2 LuNb 0.6 Al 0.4 O 6 :Mn 4+ (IQE: 34.3%), 4 Sr 2 LuSbO 6 :Mn 4+ (IQE: 29.05%), 40 and Ca 13.6 K 0.4 Ga 9.46 Ge 0.4 Zn 6 O 35 :Mn 4+ (IQE: 50.9%, EQE: 38.9%). 41 The adequate quantum efficiency of the MGOF:Mn 4+ nanophosphor under blue excitation broadly indicates its potential for indoor plant growth applications.…”

“…Red, far red, and near-IR (NIR) emitting phosphors have shown attractive prospects in phosphor-converted light-emitting diodes (pc-LEDs), 1,2 bioimaging and diagnostics, 3 indoor plant cultivation, 4 temperature sensing, 5 food quality monitoring, 6 and several other fields. Notably, recent advancements in indoor plant gardening have led to the widespread adoption of pc-LEDs as light sources for plant growth within current greenhouse facilities, providing valuable support for agriculture.…”