CsPbBr<sub>3</sub> Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion

Yu HUANG; Li-chun ZHANG; De-hua WANG; Xiao-yu ZHOU; Jing ZHANG; Ru-yang YAN; Fu-wang ZHOU

doi:10.3788/fgxb20204105.0564

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CsPbBr₃ Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion

Synthesis and Properties of Materials | 更新时间：2020-09-21

- CsPbBr₃ Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion
- Chinese Journal of Luminescence Vol. 41, Issue 5, Pages: 564-570(2020)
- 作者机构：
  
  1.鲁东大学物理与光电工程学院, 山东烟台 264025
  2.中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
- 基金信息：
  
  National Natural Science Foundation of China;National Natural Science Foundation of
- DOI：10.3788/fgxb20204105.0564
  CLC： O484.1
- Published：2020-5，
  
  Received：20 December 2019，
  
  Accepted：21 January 2020
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Yu HUANG, Li-chun ZHANG, De-hua WANG, et al. CsPbBr₃ Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion. [J]. Chinese Journal of Luminescence 41(5):564-570(2020)
DOI：

Yu HUANG, Li-chun ZHANG, De-hua WANG, et al. CsPbBr₃ Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion. [J]. Chinese Journal of Luminescence 41(5):564-570(2020) DOI： 10.3788/fgxb20204105.0564.

摘要

金属卤化物钙钛矿CsPbBr

具有优异的光学性能，是作为波长转化层在液晶显示中实现全彩显示的理想材料。为了实现高效的蓝光到绿光的光转换，采用脉冲激光沉积技术（PLD）制备CsPbBr

微米级厚膜，通过设定激光脉冲数实现膜厚的有效调控，并借助扫描电子显微镜（SEM）、X射线粉末衍射（XRD）、紫外-可见吸收光谱等测试手段对其形貌、晶体结构和光学性质进行分析。然后，将CsPbBr

微米级厚膜沉积在发射波长为460 nm的蓝光发光二极管上，并测试光转换性能。实验结果表明，制备的CsPbBr

厚膜由（100）取向的柱状晶体组成，且膜厚与激光脉冲数呈线性关系，在膜厚为2.252 μm时，在460 nm的蓝光激发下实现了完全、有效绿光的发射。此外，在空气氛围（温度20 ℃，湿度25%）下放置18 d，光致发光强度无明显衰退。

Abstract

The metal halide perovskite CsPbBr

films have excellent optical properties

which is an ideal candidate material for full-color display as a wavelength conversion layer in liquid crystal display(LCD). In order to achieve efficient photoconversion from blue to green

CsPbBr

micron-thick films have been prepared by the pulse laser deposition technique. And the morphology

structure

optical properties are investigated by means of SEM

XRD

and UV-Vis spectrum

respectively. Then the CsPbBr

micrometer-thick film is deposited on the blue light emitting diode whose emission wavelength is 460 nm

and the performance of light conversion is measured. The results show that the obtained CsPbBr

films are composed of highly (100)-oriented columnar crystal and the film thickness increases in proportion to the number of laser pulse. When the deposited CsPbBr

film thickness is 2.252 μm

a pure and effective green light emission is achieved under the excitation of blue light(460 nm). In addition

the intensity of photoluminescence(PL) does not decrease significantly when the samples are placed in an air atmosphere(temperature 20℃

humidity 25%) for 18 days.

关键词

脉冲激光沉积厚膜光转换液晶显示绿光

Keywords

pulse laser depositionthick-filmsphotoconversionliquid crystal displaygreen

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CsPbBr3 Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion

DOI：10.3788/fgxb20204105.0564

摘要

Abstract

关键词

Keywords

references

CsPbBr₃ Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion