Enhanced emission and improved thermal stability of BaMgAl10O17:Eu2+ phosphor via additional Mg2+ doping

High Thermal Stability and Photoluminescence of Si–N‐Codoped BaMgAl10O17:Eu2+Phosphors

“…Thus, the much stronger emission intensity of baked SiN–BAM may be attributed to following reasons: First, substitution of Si–N for Al–O compacts the spinel block, which may hinder the adsorption of oxygen atom infiltrating into an oxygen vacancy and the diffusion of large Eu 2+ ions along the conduction layer during baking. It was reported that the introduction of additional Mg 2+ into BAM could prevent the migration of large Eu 2+ in the baking process 11 . Secondly, a more covalent bond between Eu 2+ and N 3− also hinders the diffusion of large Eu 2+ .…”

“…[1][2][3] However, this phosphor suffers from a deterioration of color quality and efficiency during heating up to 5001-6001C in air, [4][5][6] which is necessary for its application. Hence the degradation mechanisms have been widely studied, [1][2][3][4][5][6][7] and many methods, such as coating, 7-10 compositional variation, 11,12 and baking in a nonoxidizing atmosphere, have been proposed to improve its thermal stability; 7,13 but the degradation problem remains a severe issue to be solved. In the present study, the photoluminescence properties and thermal stability of BAM phosphor were studied in terms of the effects of Si-N doping.…”

Synthesis of Nanosized Luminescent Materials and Their Photoluminescence under VUV Excitation

“…14,74,75 Moreover, the doping of Mg 2+ to substitute Al 3+ in the bulk BAM could effectively restrain the thermal degradation. 80 Hence Mg 2+ and CTAB were introduced in sol-gel method for synthesizing BAM nanophosphor. The emission spectrum presents a broad band locating at about 452 nm, which attributes to the 4f 6 5d → 4f 7 ( 8 S 7/2 ) transition of Eu 2+ .…”

Enhanced photoluminescence of BaMgAl10O17:Eu2+ nanophosphor for PDP application

“…In the systems of ZnO and ZnSiO 4 :Mn, it was found that the addition of cetyltri-methyl-ammonium bromide (CTAB) in sol-gel process could improve their luminescent intensity attributing to the interaction between CTA + and anionic group [8][9][10][11]. Moreover, the doping of Mg 2+ to substitute Al 3+ in the bulk BAM could effectively restrain the thermal degradation [12]. Hence in this work, we synthesized Mg 2+ doped BaMgAl 10 O 17 :Eu 2+ nanophosphor by CTAB assisted sol-gel technique, and explored its photoluminescence under VUV excitation.…”