掺锑杂化氯化物单晶的高效稳定宽带发光与全光谱LED应用

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Efficient and Stable Broadband Luminescence in Antimony-doped Hybrid Chloride Single Crystals for Full-spectrum LED Applicatior

MA Han，YANG Enbei，WAN Jing*，TAN Fengsong，ZHOU Qiang*，WANG Zhengliang （KeyLaboratoryofGreenChemistryMaterialsinUniversityofYunnanProvince，YunnanKeyLaboratoryofChiralFunctional SubstanceResearchdicatioolofstrydEiontnnuUesityng * CorrespondingAuthors，E-mail：jwan@ymu.edu.cn; q -zhou@ymu.edu.cn

Abstract：Inrecent years，full-spectrum light-emiting diodes （LEDs） have atracted considerable interest due to theircontinuousspectral distributionand superiorcolor renderingcapabilities．In this work，zero-dimensional DMA4InCl，：Sb 3+ （DMA=C ）hybrid metal halide single crystals were synthesized via an anti-solvent approach. Under343nm ultraviolet excitation，the crystals exhibited broadband orange-yellow emisioncentered at 620 nm， achieving an exceptional quantum efficiency of 95. 2% with abroad full width at half maximum（FWHM） of 148 nm. Density functional theory（DFT）calculationsshowed that Sh ）3+ doping effectivelyimproves the band structure of host， while thespectralcharacterizationsdemonstratedthatthebroadband emissionoriginates fromthetripletself-trapped exciton（STE）of ⌊SbCl6⌋3- . Temperature-dependent photoluminescence spectra further revealed high photoluminescence thermal stability，with the material maintaining 81.2% of its room-temperature（RT） emission intensity at 150 ℃.Leveraging these superior luminescent properties，we fabricated a full-spectrum LED device with a high colorrendering index（CRI）of94.9.Thiswork providesastrategicreferencefordesigninghybrid metalhalideluminescent materials that combine efficient broadband emission with suppressed thermal quenching.

Key words：full-spectrum；light-emiting diode；metal halide；photoluminescence thermal stability

1引言

发光二极管凭借体积小、功耗低、寿命长等优势，近三十年来已发展成为照明领域的主流技术2。（剩余16367字）