一种提升LED光输出稳定性的有机-无机锰卤化物及其亮度优化

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关键词：有机-无机金属卤化物；绿色荧光粉；光致发光；LED应用中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250016 CSTR：32170.14.CJL.20250016

Abstract：Organic-inorganic hybrid manganese halidesare ideal narow-band green light materials，but their encapsulated LED devices rapidly degrade after being lit，making them unsuitable for applications.This paper reports on an organic-inorganic hybrid manganese halide， （1-mPQBr）2MnBr4 ，and demonstrates the good light output stabilityof its encapsulatedLED.Inaddition，toaddressthe isseof weak luminescence，optimized evaporationsynthesis methods and metal ion doping techniques have been proposed. Among these，the sample doped with 10% Li exhibitedthehighest luminescence intensity，whichwasa 28% improvement compared to the traditional evaporation method.This study found that the improved evaporation method enhanced the material'sabsorptionof blue light；the ion substitutionmethod alteredthecrystalstructure，thereby increasing theluminescence intensity.The whitelight LED encapsulated by （∇1-mPQBr）2MnBr4 hasa color gamut coverage of 106% NTSC，with aluminous efficacy of 112lm/ W at a drive current of 10mA . This discovery opens the door for the application of organic-inorganic hybrid manganese halides in the field of high-color-gamut displays.

Key Words： organic-inorganic metal halides； green phosphors；photoluminescence;LED applications

1引言

在高色域显示领域中，符合人眼灵敏度的绿色荧光粉对LED的色域范围和发光效率有着重要影响，因此获得具有 ～520nm 中心发射波长和窄带发射特性的绿色荧光粉是实现高色域显示的重要条件-3]。（剩余15780字）