Synthesis and photoluminescence properties of Mn 4+ -doped magnetoplumbite-related aluminate X-type Ca 2 Mg 2 Al 28 O 46 and W-type CaMg 2 Al 16 O 27 red phosphors
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Abstract
Abstract Novel Mn 4+ -doped magnetoplumbite-related aluminate X-type Ca 2 Mg 2 Al 28 O 46 and W-type CaMg 2 Al 16 O 27 red phosphors were synthesized by solid-state reaction, and we investigated their photoluminescence properties. X-type Ca 2 Mg 2 Al 28 O 46 :Mn 4+ and W-type CaMg 2 Al 16 O 27 :Mn 4+ exhibited red photoluminescence, with peaks at 655 and 656 nm, arising from the spin-forbidden 2 E→ 4 A 2 transition of Mn 4+ under near-ultraviolet and blue light excitation, respectively. Therefore, these red phosphors can be excited by near ultraviolet or blue LED light. The photoluminescence properties of these phosphors were similar because magnetoplumbite-related structures crystallize similarly, forming structures consisting of stacked S and R blocks. From these results, we confirmed that magnetoplumbite-related compounds can act as the host structure for Mn 4+ -doped phosphors.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Luminescence and Fluorescent Materials
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