一種提升LED光輸出穩(wěn)定性的有機(jī)-無機(jī)錳鹵化物及其亮度優(yōu)化
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關(guān)鍵詞：有機(jī)-無機(jī)金屬鹵化物；綠色熒光粉；光致發(fā)光；LED應(yīng)用中圖分類號：0482.31 文獻(xiàn)標(biāo)識碼：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
在高色域顯示領(lǐng)域中，符合人眼靈敏度的綠色熒光粉對LED的色域范圍和發(fā)光效率有著重要影響，因此獲得具有 ～520nm 中心發(fā)射波長和窄帶發(fā)射特性的綠色熒光粉是實(shí)現(xiàn)高色域顯示的重要條件-3]。（剩余15780字）