基于长石结构设计高热稳定性 BaGa2Si2O8 :Cr3+宽带近红外荧光粉
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关键词：近红外荧光粉；长石； BaGa2Si2O8 ；热稳定性； Cr3+ -Cr离子对中图分类号：0482.31 文献标识码：ADOI：10.37188/CJL.20250236 CSTR：32170.14.CJL.20250236
High ThermalStabilityBaGa2SiO8： Cr3+ BroadbandNear-infrared Fluorescent Powder Based on Feldspar Structure Design
CHEN Long1，2，WANG Maohua1²，，HE Jiuyang1，2*，AIERKEN Sidik1，2*
（1.Schoolof Physicsand Electronic Engineering，Xinjiang Normal University，Urumqi 83oo54，China;
2.XinjiangKeyLaboratoryofLuminescentMineralsandPhotofunctionalMaterials，Urumqi83oo54，China） CorrespondingAuthors，E-mail：hejiuyang@sina.com；aierkenjiang@sina.com
Abstract：NIR phosphor-converted LEDs （pc-LEDs），as a new type of portable near-infrared light source，are widelyused in fieldssuch asnight vision，plant growth，and medical diagnostics.Their performance largelydepends on thecharacteristicsof thedevelopednear-infrared phosphors.However，currntlyreported near-infrared phosphors generallyfacechallengesofnarrowbandwidthandinsufficientthermalstability，whichsignificantlylimitstheperformanceimprovementof NIRpc-LEDsand theirbroaderpracticalapplication.Toaddress theurgentneed forhigh thermal stabilityandbroad emisson bandwidth inhigh-performance near-infrared lightsources，this studydesigned and synthesized a novel BaGa2Si2O near-infrared phosphor based on Cr3+ C χ+3+ ion pairs. This phosphor can be effectively excitedby450nmbluelight，producingabroadbandnear-infrared emisson（65O-1OO0 nm）withafull width athalf maximum（FWHM）of134nm.Itexhibits excellntthermalstability，retaining83.67%of itsinitialluminescence intensity evenat a high temperature of 423K ，outperforming most similar materials.The fabricated NIR pcLED device basedonthis phosphordemonstrates potentialfor applications innightvision and bioimaging，confirming thesignificant potentialoffeldspar-type structure materialsindeveloping high-performance near-infrared phosphors.
Keywords：near-infrared phosphor;feldspar-type structure；BaGazSizOg；thermal stability; Cr3+ -Cr+ionpairs
1引言
近红外（NIR）光是电磁波的重要组成部分，具有不可见、散射损失小、穿透能力强、与有机官能团特异性相互作用等特性，因此近红外光源在安防监控、食品安全、农业、夜视和医疗等领域得到了广泛应用2。（剩余17471字）