Preparation and Luminescent Properties of CsPbBr3/Si3N4 Composite

Fan-fan XU; Wen-dong NIE; Li-qin YAO; Sheng-an HE; Guang CHEN; Xin-yu YE

doi:10.37188/CJL.20210085

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Preparation and Luminescent Properties of CsPbBr₃/Si₃N₄ Composite

Synthesis and Properties of Materials | 更新时间：2021-06-18

- Preparation and Luminescent Properties of CsPbBr₃/Si₃N₄ Composite
  增强出版
- Chinese Journal of Luminescence Vol. 42, Issue 6, Pages: 829-837(2021)
- 作者机构：
  
  1.江西理工大学材料化学冶金学部, 江西赣州　 341000
  2.江西理工大学稀土学院, 江西赣州　 341000
  3.国家离子型稀土资源高效开发利用工程技术研究中心, 江西赣州　 341000
  4.江西省稀土发光材料与器件重点实验室, 江西赣州　 341000
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China(51962005);Natural Science Foundation of Jiangxi Province of China(20192BAB206010);Award Program of Youth Jinggang Scholars program in Jiangxi Province([2018]82)
- DOI：10.37188/CJL.20210085
  CLC： O482.31
- Received：11 March 2021，
  
  Revised：2021-03-24，
  
  Published：01 June 2021
- 稿件说明：
移动端阅览
Fan-fan XU, Wen-dong NIE, Li-qin YAO, et al. Preparation and Luminescent Properties of CsPbBr₃/Si₃N₄ Composite[J]. Chinese Journal of Luminescence, 2021, 42(6): 829-837.
DOI：

Fan-fan XU, Wen-dong NIE, Li-qin YAO, et al. Preparation and Luminescent Properties of CsPbBr₃/Si₃N₄ Composite[J]. Chinese Journal of Luminescence, 2021, 42(6): 829-837. DOI： 10.37188/CJL.20210085.

摘要

近年来，钙钛矿量子点CsPb

(

=Cl

I)稳定性较差的问题引起了广泛关注。本文在室温下合成了稳定的CsPbBr

/Si

绿色荧光粉并将其应用于白光发光二极管(WLEDs)。通过X射线衍射(XRD)、扫描电子显微镜(SEM)、能谱仪(EDS)、激发和发射光谱(PL、PLE)等分析测试手段对CsPbBr

量子点和CsPbBr

/Si

荧光粉的结构、形貌、元素组成及光谱特性等进行了分析对比。实验结果表明，CsPbBr

/Si

绿色荧光粉的热稳定性、水稳定性、色稳定性均得到了显著提升。80 ℃时CsPbBr

/Si

荧光粉的发光强度能保持初始发光强度的87.4%，水中浸没120 min后发光强度能保持初始发光强度的75.5%。CsPbBr

/Si

复合材料的量子效率则由CsPbBr

量子点粉体的15.4%提升至35.4%。将CsPbBr

/Si

复合材料与K

SiF

∶Mn

红色荧光粉、InGaN基蓝光LED芯片封装制得的WLED器件色域为113.4% NTSC，流明效率达49.4 lm/W。

Abstract

In recent years

the poor stability of perovskite quantum dots CsPb

(

=Cl

I) has attracted extensive attention. In this paper

we synthesized stable CsPbBr

/Si

green phosphors at room temperature and applied to white light emitting diodes(WLEDs). The structure

morphology

element composition and luminescent properties of CsPbBr

and CsPbBr

/Si

phosphors were investigated by X-ray diffraction(XRD)

scanning electron microscopy(SEM)

energy dispersive spectrometer(EDS)

excitation and emission spectra(PL

PLE). The thermal stability

water and color stability of CsPbBr

/Si

green phosphor were obviously improved. The emission intensity of CsPbBr

/Si

phosphor can maintain 87.4% of the initial emission intensity at 80 ℃

and maintain 75.5% of the initial emission intensity after being immersed in deionized water for 120 min. The quantum efficiency of CsPbBr

/Si

composite is increased from 15.4% of CsPbBr

quantum dots powder to 35.4%. By packing the CsPbBr

/Si

phosphor with K

SiF

∶Mn

red phosphor and InGaN based blue LED chip

the color gamut of the WLED device is 113.4% NTSC and the luminous efficiency is 49.4 lm/W.

关键词

Keywords

references

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Fan-fan XU

Wen-dong NIE

Li-qin YAO

Sheng-an HE

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Related Institution

Faculty of Materials， Metallurgy and Chemistry， Jiangxi University of Science and Technology

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School of Rare Earth， Jiangxi University of Science and Technology

Key Laboratory of Rare Earth Luminescence Materials and Devices of Jiangxi Province

College of Materials and Chemical Engineering, Henan University of Urban Construction

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