Preparation and photoluminescence characteristics of Li 2 Mg 3 SnO 6 :Mn 4+ deep red phosphor
Source abstract
Abstract
Abstract Li2Mg3SnO6:Mn4+ deep red phosphor is synthesized by high-temperature solid-state reaction method in air. With excitation 330 and 480 nm, the emission band peaking at ∼670 nm within the range 600–790 nm is observed owing to the 2E → 4A2 transition of Mn4+ ion. Excitation bands peaking at ∼330, 395, and 480 nm in the range of 220–600 nm indicate that Li2Mg3SnO6:Mn4+ phosphor can be effectively excited by (near) ultraviolet and blue light-emitting diode chips. The optimal Mn4+ ion concentration is ∼0.4 mol%. Fluorescence lifetime and quantum efficiency of Li2Mg3SnO6:0.4%Mn4+ phosphor with excitation 330 nm are ∼266.67 μs and 36.3%, respectively. The luminous mechanism is explained by the Tanabe-Sugano energy level diagram of Mn4+ in the octahedron.
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Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Advanced Photocatalysis Techniques · Microwave Dielectric Ceramics Synthesis
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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