具有石榴石结构的高效近红外荧光粉Y₃(In_xGa_1-x)₂Ga₃O₁₂ ： Cr³⁺ 发光性能

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关键词：近红外荧光粉；pc-LED；光谱调谐；发光材料中图分类号：0482.31 文献标识码：ADOI:10.37188/CJL.20240324 CSTR:32170.14.CJL.20240324

Luminescent PropertiesofEfficientNear-infrared Phosphors with Garnet Structure

WUBin,LIU Le,YAO Leqi,FUYibing* (JiangsuBreeOptronicsCo.,Ltd.,Nanjing211103,China) *CorrespondingAuthor,E-mail:ybfu_sbt@163.com

Abstract:Near-infrared phosphor-converted light-emiting diodes（NIR pc-LEDs） have demonstrated significant application potentialinthe fieldssuchas plant lightingandbioimaging.The luminescence efciencyand thermal stability of near-infrared phosphors directly determine deviceperformance，emphasizing the importance of developing highlyefficientandthermallystablenear-infraredphosphors.Inthisstudy,wesynthesizedaneficientnear-infrared phosphor, Y3InyGa5-x-yO12:xCr3+ ，with a garnet structure using a high-temperature solid-state method. The emission spectrum ranges from 600 nm to 1O0O nm. By adjusting the In3+ content，we achieved spectral tuning and attained an internal quantum efficiency of up to 95. 8% .Additionally，thephosphorexhibitsexcellent thermal stability.Experimental results show that at 423K，theluminescence intensity remainsat83. 6% ofthe room-temperaturevalue. Finaly，we fabricated high-effciency NIR pc-LEDdevices by combining this phosphor with commercial blue LEDs, achieving anear-infrared output power of 273.5 mWundera 350 mA current drive.These results demonstrate that this series of near-infrared phosphors and NIR pc-LED devices hold high application potential.

Key words:near-infrared phosphor；pc-LED；spectral tuning；luminescent materials

1引言

近红外光(NIR)发光器件在植物照明、食品药品检测、人体健康检测、健康照明等领域的应用前景十分广阔[1-3]。（剩余21379字）