Correction for‘Achieving highly thermostable red emission in singly Mn^(2+)-doped BaXP_(2)O_(7)(X=Mg/Zn)via self-reduction’by Song Li et al.,Inorg.Chem.Front.,2022,9,3224-3232,https://doi.org/10.1039/D2QI00539E.
Non-rare earth doped red phosphors are attracting wide attention for warm-white lighting and indoor plant cultivation applications. Mn^(2+)-doped phosphors have good spectral tunability and great potential to generate...Non-rare earth doped red phosphors are attracting wide attention for warm-white lighting and indoor plant cultivation applications. Mn^(2+)-doped phosphors have good spectral tunability and great potential to generate red emissions with comparable spectral profiles to commercial materials but with poor thermal resistance. Herein, two kinds of Mn^(2+)-doped BaXP_(2)O_(7) (X = Mg/Zn) red-emitting phosphors are produced via self-reduction in air. The XPS, EPR, and optical spectroscopy measurements confirm the stabilization of manganese in the divalent state Mn^(2+). The BaMgP_(2)O_(7):Mn^(2+) (BMPO:Mn^(2+)) phosphor has an emission band at around 620 nm, matching well with the photopic spectral luminous efficiency curve. BaZnP_(2)O_(7):Mn^(2+) (BZPO:Mn^(2+)) exhibits a deep-red broad emission at about 670 nm, which overlaps with the chlorophyll and phytochrome absorption peaks. To realize the Mn4+ → Mn^(2+) self-reduction, intrinsic defects are generated, which serve as charge traps to compensate for the nonradiative loss at elevated temperatures. As a result, both phosphors exhibit anti-thermal quenching (anti-TQ) behaviors within 200℃, and even at 250℃, BMPO:Mn^(2+) and BZPO:Mn^(2+) retain 108% and 101% of the initial luminescence intensity at room temperature, respectively. Anti-TQ is rarely observed in singly Mn^(2+)-doped phosphors. The self-reduction strategy in a rigid matrix lattice provides an effective way to improve the thermal stability of Mn^(2+)-luminescence. The spectral compatibility and high thermal resistance of the pyrophosphate phosphors highlight their promising applications in warm-white LED or plant growth lighting.展开更多
文摘Correction for‘Achieving highly thermostable red emission in singly Mn^(2+)-doped BaXP_(2)O_(7)(X=Mg/Zn)via self-reduction’by Song Li et al.,Inorg.Chem.Front.,2022,9,3224-3232,https://doi.org/10.1039/D2QI00539E.
基金supported by the Hunan Provincial Natural Science Foundation of China(2021JJ30438)National Natural Science Foundation of China(Grant no.21805082)+3 种基金support from the Program for the Foreign Experts(Grant No.W2017011)offered by Chongqing University of PostsTelecommunications and the National Foreign Experts Program for“Belt and Road Initiative”Innovative Talent Exchange(Grant No.DL2021035001L)Estonian Research Council grant PUT PRG111,European Regional Development Fund(TK141)NCN project 2018/31/B/ST4/00924.
文摘Non-rare earth doped red phosphors are attracting wide attention for warm-white lighting and indoor plant cultivation applications. Mn^(2+)-doped phosphors have good spectral tunability and great potential to generate red emissions with comparable spectral profiles to commercial materials but with poor thermal resistance. Herein, two kinds of Mn^(2+)-doped BaXP_(2)O_(7) (X = Mg/Zn) red-emitting phosphors are produced via self-reduction in air. The XPS, EPR, and optical spectroscopy measurements confirm the stabilization of manganese in the divalent state Mn^(2+). The BaMgP_(2)O_(7):Mn^(2+) (BMPO:Mn^(2+)) phosphor has an emission band at around 620 nm, matching well with the photopic spectral luminous efficiency curve. BaZnP_(2)O_(7):Mn^(2+) (BZPO:Mn^(2+)) exhibits a deep-red broad emission at about 670 nm, which overlaps with the chlorophyll and phytochrome absorption peaks. To realize the Mn4+ → Mn^(2+) self-reduction, intrinsic defects are generated, which serve as charge traps to compensate for the nonradiative loss at elevated temperatures. As a result, both phosphors exhibit anti-thermal quenching (anti-TQ) behaviors within 200℃, and even at 250℃, BMPO:Mn^(2+) and BZPO:Mn^(2+) retain 108% and 101% of the initial luminescence intensity at room temperature, respectively. Anti-TQ is rarely observed in singly Mn^(2+)-doped phosphors. The self-reduction strategy in a rigid matrix lattice provides an effective way to improve the thermal stability of Mn^(2+)-luminescence. The spectral compatibility and high thermal resistance of the pyrophosphate phosphors highlight their promising applications in warm-white LED or plant growth lighting.
