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脉冲激光沉积制备CsPbBr3厚膜及其蓝-绿光转换性能
CsPbBr3 Micrometer-thick Films Deposited by Pulsed Laser Deposition with Efficient Blue to Green Photoconversion
- 发光学报 2020年41卷第5期 页码：564-570
- 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：
[ "黄于(1994-)，男，安徽蚌埠人，硕士研究生，2016年于淮南师范学院获得学士学位，主要从事新能源材料制备及光电器件应用的研究。E-mail: hyphysics@163.com" ]
[ "张立春 (1982-)，男，山东滨州人，博士，副教授，硕士研究生导师，2013年于曲阜师范大学获得博士学位，主要从事宽禁带半导体薄膜材料生长及光电器件制备、低维纳米新能源材料制备及光电器件应用的研究" ]
- 基金信息：国家自然科学基金(11504155);国家自然科学基金(61705096);山东省自然科学基金(ZR2019MA066)
DOI：10.3788/fgxb20204105.0564
中图分类号： O484.1纸质出版日期：2020-5，
收稿日期：2019-12-20，
录用日期：2020-01-21
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黄于, 张立春, 王德华, 等. 脉冲激光沉积制备CsPbBr3厚膜及其蓝-绿光转换性能[J]. 发光学报, 2020,41(5):564-570.
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, 2020,41(5):564-570.
黄于, 张立春, 王德华, 等. 脉冲激光沉积制备CsPbBr3厚膜及其蓝-绿光转换性能[J]. 发光学报, 2020,41(5):564-570. DOI： 10.3788/fgxb20204105.0564.
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, 2020,41(5):564-570. DOI： 10.3788/fgxb20204105.0564.
摘要
金属卤化物钙钛矿CsPbBr
3
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
3
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
3
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
3
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
3
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
3
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
3
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
3
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
3
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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