Temperature-Dependent Electroluminescence of Phosphor-Converted White LEDs With K₂SiF₆:Mn⁴⁺ Below Room Temperature

Debao Zhang,Yuruo Zheng,Kechao Lu,Zihao Wang,Fei Tang,Jiqiang Ning,Shijie Xu,Changcheng Zheng

IEEE Electron Device Letters（2022）

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Abstract

High-efficiency Mn4+-activated red phosphor of K2SiF6:Mn4+ synthesized at low temperature was utilized to fabricate phosphor-converted white light-emitting diodes (pc-WLEDs). Temperature-dependent electroluminescence (EL) measurements were undertaken at a constant forward voltage mode. A large negative-thermal-quenching (NTQ) effect is demonstrated for t...

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Key words

Phosphors,Manganese,Color,Temperature distribution,Light emitting diodes,Temperature measurement,Luminescence

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