Perovskite Quantum Dot/Powder Phosphor Converted White Light LEDs with Wide Color Gamut

WANG Wei; LI Yi; NING Ping-fan; NIU Ping-juan; LIU Hong-wei; ZHAN He-jun

doi:10.3788/fgxb20183905.0627

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Perovskite Quantum Dot/Powder Phosphor Converted White Light LEDs with Wide Color Gamut

更新时间：2020-08-12

- Perovskite Quantum Dot/Powder Phosphor Converted White Light LEDs with Wide Color Gamut
- Chinese Journal of Luminescence Vol. 39, Issue 5, Pages: 627-632(2018)
- 作者机构：
  
  1. 天津工业大学电子与信息工程学院, 天津 300387
  2. 天津工业大学天津市电工电能新技术重点实验室, 天津 300387
  3. 天津工业大学电气工程与自动化学院, 天津 300387
  4. 天津工业大学大功率半导体照明应用系统教育部工程研究中心, 天津 300387
- 作者简介：
- 基金信息：
  
  Supported by National Natural Science Foundaztion of China (61605145,61575144);App
- DOI：10.3788/fgxb20183905.0627
  CLC： O482.31
- Received：04 September 2017，
  
  Revised：25 October 2017，
  
  Published Online：23 November 2017，
  
  Published：05 May 2018
- 稿件说明：
移动端阅览
王巍, 李一, 宁平凡等. 广色域钙钛矿量子点/荧光粉转换白光LED[J]. 发光学报, 2018,39(5): 627-632

WANG Wei, LI Yi, NING Ping-fan etc. Perovskite Quantum Dot/Powder Phosphor Converted White Light LEDs with Wide Color Gamut[J]. Chinese Journal of Luminescence, 2018,39(5): 627-632
王巍, 李一, 宁平凡等. 广色域钙钛矿量子点/荧光粉转换白光LED[J]. 发光学报, 2018,39(5): 627-632 DOI： 10.3788/fgxb20183905.0627.

WANG Wei, LI Yi, NING Ping-fan etc. Perovskite Quantum Dot/Powder Phosphor Converted White Light LEDs with Wide Color Gamut[J]. Chinese Journal of Luminescence, 2018,39(5): 627-632 DOI： 10.3788/fgxb20183905.0627.

摘要

报道了一种使用绿色CsPb（Br

0.75

0.25

）

无机钙钛矿量子点（PeQDs）和红色K

SiF

：Mn

（KSF）荧光粉作为荧光转换材料实现广色域白光LED的方法。合成了绿色CsPb（Br

0.75

0.25

）

量子点，峰值波长为526 nm，半高宽度为27 nm，具有很好的单色性。采用蓝光LED芯片、红色KSF荧光粉和绿色CsPb（Br

0.75

0.25

）

PeQDs组合能够覆盖CIE 1931颜色空间中很广的色域，达到NTSC标准色域的107%。利用丝网印刷和紫外固化工艺制作了PeQDs薄膜、KSF薄膜和PeQDs-KSF混合薄膜，与蓝光LED芯片组合得到了3种不同封装形式的白光LED器件。研究了不同封装形式对器件光学特性的影响，KSF薄膜在外侧的样品光效最高，为102 lm/W，色温为7 100 K。

Abstract

Perovskite quantum dots(PeQDs) are showing commercial promise for achieving wide color gamut in LCD displays for their tunable spectrum

high efficiency and much narrower FWHM emission spectrum than that of phosphors. We report a method to produce white light emitting LEDs (wLEDs) used for wide color gamut backlight using green light emitting CsPb(Br

0.75

0.25

)

(CPBI) inorganic PeQDs and red light emitting K

SiF

:Mn

(KSF) phosphor powder as color conversion materials. CPBI PeQDs with emission peak wavelength of 526 nm and FWHM of 27 nm were successfully synthesized. The color points of the blue LED

the CsPb(Br

0.75

0.25

)

PeQDs and the KSF powder in the CIE 1931 color space yield a wide color gamut covering 107% of the NTSC standard. PeQDs

KSF and PeQDs-KSF conversion films were fabricated by screen printing and UV curing processes. Three kinds of wLEDs with different package structure were produced using blue LED chip and conversion films. Lighting properties of these devices were discussed and the sample with KSF film on the surface showed the optimum lumen efficiency of 102 lm/W and color temperature of 7 100 K.

关键词

Keywords

references

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