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1.湖北大学微电子学院 微纳电子材料与器件湖北省重点实验室, 湖北 武汉 430062
2.江苏永鼎股份有限公司, 江苏 苏州 215211
3.湖北大学 潜江产业技术研究院, 湖北 潜江 433100
[ "王瑞(1996-),女,河南新乡人,硕士研究生,2021年于郑州航空工业管理学院获得学士学位,主要从事发光材料方面的研究。1908063859@qq.com " ]
[ "曾敏(1990-),女,湖北荆州人,博士,副教授,硕士生导师,2020年于根特大学获得博士学位,主要从事无机发光材料的研究。 E-mail: min.zeng@hubu.edu.cn" ]
[ "李岳彬(1983-),男,湖北黄冈人,博士,教授,博士生导师,2011年于华中科技大学获得博士学位,主要从事发光材料与器件方面的研究。 E-mail: ybli@hubu.edu.cn" ]
收稿日期:2023-05-09,
修回日期:2023-05-18,
纸质出版日期:2023-09-05
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王瑞,张铭,程宋玉等.Mn2+掺杂CsCdCl3微米晶发光性能及其LED应用[J].发光学报,2023,44(09):1560-1569.
WANG Rui,ZHANG Ming,CHENG Songyu,et al.Luminescent Properties of Mn2+-doped CsCdCl3 Microcrystals for LED Application[J].Chinese Journal of Luminescence,2023,44(09):1560-1569.
王瑞,张铭,程宋玉等.Mn2+掺杂CsCdCl3微米晶发光性能及其LED应用[J].发光学报,2023,44(09):1560-1569. DOI: 10.37188/CJL.20230125.
WANG Rui,ZHANG Ming,CHENG Songyu,et al.Luminescent Properties of Mn2+-doped CsCdCl3 Microcrystals for LED Application[J].Chinese Journal of Luminescence,2023,44(09):1560-1569. DOI: 10.37188/CJL.20230125.
全无机镉基金属卤化物CsCdCl
3
因其独特的三维晶体结构而具有优异的稳定性、宽带自陷激子(Self⁃trapped excitons,STEs)发射和丰富的离子掺杂格位,在固态照明领域引起了广泛关注。然而,基于八面体畸变的STEs辐射复合的发光效率较低。本文采用简单的室温溶液法制备了一系列Mn
2+
离子掺杂的六方相CsCdCl
3
∶
x
%Mn微米晶。在254 nm紫外光激发下,Mn
2+
掺杂的样品发出明亮的橙黄光,发射峰位于598 nm处,半峰宽为75 nm,荧光量子产率最高达99.1%。稳态和瞬态荧光光谱测试结果表明,Mn
2+
掺杂CsCdCl
3
微米晶的宽光谱发射源自基质的STEs和Mn
2+
离子的d⁃d跃迁。同时,该材料还具备优异的空气、热、水稳定性。我们进一步将CsCdCl
3
∶5%Mn
2+
荧光粉、商用荧光粉、深紫外或蓝光LED芯片封装成两种白光发光二极管器件,色度坐标分别为(0.36,0.35)和(0.40,0.36),显色指数分别高达91和83,有望成为新一代发光材料用于照明领域。
Owing to its excellent stability and wide self-trapped excitons(STEs)emission induced by the special three-dimensional(3D)crystal structure, all inorganic cadmium-based metal halide perovskite CsCdCl
3
has attracted broad attention in the field of solid-state lighting. However, the luminescence efficiency through radiative recombination of STEs is not high. Herein, a serious of Mn
2+
-doped hexagonal CsCdCl
3
∶
x
%Mn microcrystals were prepared by a facial room-temperature solution method. Under 254 nm UV excitation, CsCdCl
3
microcrystals after Mn
2+
doping show bright orange-yellowish emission peaking at about 598 nm with a full width at half-maximum of 75 nm and the photoluminescence quantum yield of 99.1%. Steady-state and transient photoluminescence results suggest that the broad emission is originating from the matrix STEs and the Mn
2+
dopant. Meanwhile, the as-synthesized materials also display excellent air, heat, and water stability. Two white light-emitting diodes(LEDs)were further fabricated by integrating a mixture of CsCdCl
3
∶5%Mn and commercial phosphors on a deep UV LED and a blue LED, which demonstrate bright white light with CIE coordinates of (0.36, 0.35) and (0.40, 0.36), high color rendering indices of 91 and 83, respectively. The synthesized Mn
2+
-doped CsCdCl
3
phosphor holds great promise for new-generation luminescent materials in the field of lighting.
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