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Abstract A series of double perovskite Sr2MgTeO6:Sm3+/Dy3+ phosphors for solid-state lighting application were successfully synthesized by the solid-state reaction process. The phase structure, photoluminescence, thermal quenching, and decay behavior of… Click to show full abstract
Abstract A series of double perovskite Sr2MgTeO6:Sm3+/Dy3+ phosphors for solid-state lighting application were successfully synthesized by the solid-state reaction process. The phase structure, photoluminescence, thermal quenching, and decay behavior of the prepared phosphors were investigated. The photoluminescence of Sr2MgTeO6:Sm3+ exhibits red emission (640 nm) due to the transition from the 4G5/2 → 6H7/2 under 404 nm excitation. Sr2MgTeO6:Dy3+ exhibits two emission bands under 390 nm excitation. They are due to 4F9/2 → 6H15/2 (blue) and 4F9/2 → 6H13/2 (yellow) transitions of Dy3+, respectively. Sr2MgTeO6:0.10Sm3+ phosphor shows excellent thermal stability. Therefore, Sr2MgTeO6:Sm3+/Dy3+ phosphors are a promising candidate for UV chip-based WLED and solid-state lighting.
Journal Title: Journal of Luminescence
Year Published: 2019
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