Efficient and stable near-infrared Y₂Mg₂Al₂Si₂O₁₂:Cr³⁺ phosphor: analysis of the luminescence source by a site elimination strategy

Abstract

The double luminescence centers of the Y2Mg2Al2Si2O12:Cr3+ phosphor are accurately analyzed by a site elimination strategy.

Two-Site Occupation for Constructing Double Perovskite BaLaMgNbO6:Cr3+ Ultrabroadband NIR Phosphors

“…NIR phosphors, as a crucial constituent of NIR pc-LEDs, have garnered significant attention from scholars and experts. At present, NIR phosphors activated by transition metal ions (Cr 3+ , Fe 3+ , Ni 2+ ) and rare earth ions (Eu 2+ , Yb 3+ , Nd 3+ ) have been extensively developed. − Fe 3+ requires ultraviolet chip excitation, and its high price limits its application. Ni 2+ ions achieve luminescence in specific crystal structures with a low efficiency.…”

Enhanced NIR optical properties of a single-site-occupied ultra-broadband InNbTiO6:Cr3+ phosphor at 965 nm through Ga3+ doping

“…Recently, numerous Cr 3+ -doped oxides have been reported, such as Y 2 Mg 2 Al 2 Si 2 O 12 :Cr 3+ , 21 Ca 2 LuScAl 2 Si 2 O 12 :Cr 3+ , 22 K-β-Al 2 O 3 :Cr 3+ , 23 AlP 3 O 9 :Cr 3+ , 24 CaLu 2 Mg 2 Si 3 O 12 :Cr 3+ , 25 and K 2 SrGe 8 O 18 :Cr 3+ . 26 Yet, numerous previously documented Cr 3+ -activated NIR phosphors either demonstrate narrow-band emissions or display emission peaks below 900 nm, owing to the influence of crystal field strength, limiting their use in NIR spectroscopy analysis.…”

CaY2ZrScAl3O12:Cr3+—an efficient and thermally stable garnet phosphor for high-performance NIR LEDs

“…6 In contrast, phosphor-converted white light-emitting diodes (pc-WLEDs) have gained popularity for their miniaturization, high efficiency, and long lifespan. 7 Drawing inspiration from pc-WLEDs, e.g. , an InGaN-based blue LED coated with a yellow phosphor (Y 3 Al 5 O 12 :Ce 3+ (YAG:Ce 3+ )), NIR light sources can be miniaturized through a similar approach.…”