Surface ligand modified cesium lead bromide/silica sphere composites for low-threshold upconversion lasing
2022-03-01
发表期刊PHOTONICS RESEARCH (IF:6.6[JCR-2023],6.6[5-Year])
ISSN2327-9125
卷号10期号:3
发表状态已发表
DOI10.1364/PRJ.442659
摘要

In recent years, all-inorganic halide perovskite quantum dots (QDs) have drawn attention as promising candidates for photodetectors, light-emitting diodes, and lasing applications. However, the sensitivity and instability of perovskite to moisture and heat seriously restrict their practical application to optoelectronic devices. Recently, a facile ligand-engineering strategy to suppress aggregation by replacing traditional long ligands oleylamine (OAm) during the hot injection process has been reported. Here, we further explore its thermal stability and the evolution of photoluminescence quantum yield (PLQY) under ambient environment. The modified CsPbBr3 QDs film can maintain 33% of initial PL intensity, but only 17% is retained in the case of unmodified QDs after 10 h continuous heating. Further, the obtained QDs with higher initial PLQY (91.8%) can maintain PLQY to 39.9% after being continuously exposed in air for 100 days, while the PLQY of original QDs is reduced to 5.5%. Furthermore, after adhering CsPbBr3 QDs on the surface of a micro SiO2 sphere, we successfully achieve the highly-efficient upconversion random laser. In comparison with the unmodified CsPbBr3 QDs, the laser from the modified CsPbBr3 QDs presents a decreased threshold of 79.81 mu J/cm(2) and higher quality factor (Q) of 1312. This work may not only provide a facile strategy to synthesize CsPbBr3 QDs with excellent photochemical properties but also a bright prospect for high-performance random lasers. (C) 2022 Chinese Laser Press

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收录类别SCI ; SCIE ; EI
语种英语
资助项目China Postdoctoral Science Foundation[2020M681421] ; CAS Interdisciplinary Innovation Team, International ST Cooperation Program of China[2016YFE0119300] ; Program of Shanghai Academic Research Leader[18XD1404200] ; National Natural Science Foundation of China[61875211,61905264,61925507,62005296,92050203] ; National Key R&D Program of China[2017YFE0123700]
WOS研究方向Optics
WOS类目Optics
WOS记录号WOS:000762637400004
出版者CHINESE LASER PRESS
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文献类型期刊论文
条目标识符https://kms.shanghaitech.edu.cn/handle/2MSLDSTB/162937
专题物质科学与技术学院
物质科学与技术学院_特聘教授组_冷雨欣组
物质科学与技术学院_博士生
通讯作者Du, Juan
作者单位
1.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech SIOM, State Key Lab High Field Laser Phys, Shanghai 201800, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Opt & Fine Mech SIOM, CAS Ctr Excellence Ultraintense Laser Sci, Shanghai 201800, Peoples R China
3.Univ Chinese Acad Sci, Hangzhou Inst Adv Study, Hangzhou 310024, Peoples R China
4.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China
5.Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China
6.Shandong Normal Univ, Sch Phys & Elect, Jinan 250014, Peoples R China
7.Chongqing Univ Post & Telecommun, Coll Optoelect Engn, Chongqing 400065, Peoples R China
第一作者单位物质科学与技术学院
推荐引用方式
GB/T 7714
Xiong, Qian,Huang, Sihao,Zhan, Zijun,et al. Surface ligand modified cesium lead bromide/silica sphere composites for low-threshold upconversion lasing[J]. PHOTONICS RESEARCH,2022,10(3).
APA Xiong, Qian.,Huang, Sihao.,Zhan, Zijun.,Du, Juan.,Tang, Xiaosheng.,...&Leng, Yuxin.(2022).Surface ligand modified cesium lead bromide/silica sphere composites for low-threshold upconversion lasing.PHOTONICS RESEARCH,10(3).
MLA Xiong, Qian,et al."Surface ligand modified cesium lead bromide/silica sphere composites for low-threshold upconversion lasing".PHOTONICS RESEARCH 10.3(2022).
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