Pb2+ doped diopside CaMgSi2O6: New UV luminescent phosphor

Recent advances and prospects of persistent luminescent materials as inner secondary self-luminous light source for photocatalytic applications

“…Besides, the Pb 2+ ion is also found to have the persistent phenomenon, but its number is much more limited as regard to its severe toxicity. As some works have indicated, however, the intensity maxima of Pb 2+ ion strongly depends on crystal host, excitation wavelength, doping concentration and external temperature [269][270][271][272][273][305][306][307][308][309], but its emission and persistent regions are usually located in the UV region (Figure 8c). Thus, this UV persistent feature allows the Pb 2+ ion to have the potential to couple with the absorption region of many PCMs.…”

Controlling the europium oxidation state in diopside through flux concentration

“…17 Among the subfamily of pyroxenes, the CaMgSi 2 O 6 hostdiopsidehas been widely investigated as a phosphor after activation by lanthanide, transition metal, or p-block dopants. [18][19][20][21] When activated with europium ions, the phosphor typically exhibits broadband emission in the blue range originating from Eu 2+ ions. Still, narrow band emission in the red range related to Eu 3+ is also observed.…”

Synthesis of CaMgSi₂O₆:Eu²⁺ phosphor with the polymerizable complex method and adding Li₂CO₃ flux

“…In this study, we decided to add flux to the polymerizable complex method so as to obtain single phase crystals free of impurities. Various methods have been investigated for the synthesis of CMS phosphors, including the flux method, in which flux is added to the solid phase reaction method, 2) solgel method, 5) coprecipitation method, 6) and spray pyrolysis method. 7) The samples synthesized at 1200 °C using the flux method contained impurities of the starting material (silicon dioxide SiO 2 ) in addition to CMS phases.…”