Enhanced luminescence and thermal stability of (Sr,Ca)AlSiN₃:Eu²⁺ via superficial organic carbon modification

Abstract

Recently, the Eu 2+ -activated nitride phosphors with characteristic highly dense (Al/Si)N 4 tetrahedron, which are suitable for phosphor-converted white-light-emitting diodes (pc-wLEDs), have been developed, 1 such as (Sr, Ca

Progress of Ce3+/Eu2+ doped phosphors for violet chip based full-spectra lighting

“…The relative PL intensity and thermal stability are enhanced by 2.15% and 8.9% at 300 °C. 325 All the above indicates that surface modification is a promising technology to ensure the thermal stability and efficiency of phosphors.…”

Crystal field optimization and fluorescence enhancement of a Mn4+-doped fluoride red phosphor with excellent stability induced by double-site metal ion replacement for warm WLED

“…One of the typical red phosphors is Eu 2+ -doped nitrides, such as CaAlSiN 3 :Eu 2+ and (Sr, Ca)AlSiN 3 :Eu 2+ . 12–14 Although such phosphor exhibits high photo-luminescence efficiency, the expensive rare earth, the great portion of red emission beyond the human eyes’ sensitivity and the occurrence of strong photon reabsorption with YAG:Ce 3+ yellow phosphors severely limit the practical application in warm WLEDs. 15–18 In recent years, some studies have given an ideal emission peak for Eu 2+ at 590–660 nm, such as Sr[LiAl 3 N 4 ]:Eu 2+ (ref.…”