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Role of the Exciton-Polariton in a Continuous-Wave Optically Pumped CsPbBr3Perovskite Laser
Qiuyu Shang1; Meili Li1; Liyun Zhao1; Dingwei Chen2; Shuai Zhang3; Shulin Chen4,8; Peng Gao4,8; Chao Shen2; Jun Xing5; Guichuan Xing6; Bo Shen4,7; Xinfeng Liu3; Qing Zhang1,7
2020-09
Source PublicationNano Letters
ISSN1530-6984
Volume20Issue:9Pages:6636-6643
Abstract

Lead halide perovskites have emerged as excellent optical gain materials for solution-processable and flexible lasers. Recently, continuous-wave (CW) optically driven lasing was established in perovskite crystals; however, the mechanism of low-threshold operation is still disputed. In this study, CW-pumped lasing from one-dimensional CsPbBr3 nanoribbons (NBs) with a threshold of ∼130 W cm-2 is demonstrated, which can be ascribed to the large refractive index induced by the exciton-polariton (EP) effect. Increasing the temperature reduces the exciton fraction of EPs, which decreases the group and phase refractive indices and inhibits lasing above 100 K. Thermal management, including reducing the NB height to ∼120 ± 60 nm and adopting a high-thermal-conductivity sink, e.g., sapphire, is critical for CW-driven lasing, even at cryogenic temperatures. These results reveal the nature of ultralow-threshold lasing with CsPbBr3 and provide insights into the construction of room-temperature CW and electrically driven perovskite macro/microlasers.

KeywordContinuous-wave Laser Cspbbr3 Exciton-polariton Low Threshold Microlaser Perovskite
DOI10.1021/acs.nanolett.0c02462
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied ; Physics, Condensed Matter
WOS IDWOS:000571442000053
PublisherAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036 USA
Scopus ID2-s2.0-85090614048
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Citation statistics
Cited Times [WOS]:72   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorQing Zhang
Affiliation1.Department of Materials Science and Engineering,College of Engineering,Peking University,Beijing,100871,China
2.State Key Laboratory of Superlattices and Microstructures,Institute of Semiconductors,Chinese Academy of Sciences,Beijing,100083,China
3.CAS,Key Laboratory of Standardization and Measurement for Nanotechnology,CAS Center of Excellence for Nanoscience,National Center for Nanoscience and Technology,Beijing,100190,China
4.School of Physics,Peking University,Beijing,100871,China
5.Key Laboratory of Eco-Chemical Engineering,Ministry of Education,College of Chemistry and Molecular Engineering,Qingdao University of Science and Technology,Qingdao,266042,China
6.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade Taipa,999078,Macao
7.Research Center for Wide Gap Semiconductor,Peking University,Beijing,100871,China
8.Electron Microscopy Laboratory,International Center for Quantum Materials,School of Physics,Peking University,Beijing,100871,China
Recommended Citation
GB/T 7714
Qiuyu Shang,Meili Li,Liyun Zhao,et al. Role of the Exciton-Polariton in a Continuous-Wave Optically Pumped CsPbBr3Perovskite Laser[J]. Nano Letters,2020,20(9):6636-6643.
APA Qiuyu Shang,Meili Li,Liyun Zhao,Dingwei Chen,Shuai Zhang,Shulin Chen,Peng Gao,Chao Shen,Jun Xing,Guichuan Xing,Bo Shen,Xinfeng Liu,&Qing Zhang.(2020).Role of the Exciton-Polariton in a Continuous-Wave Optically Pumped CsPbBr3Perovskite Laser.Nano Letters,20(9),6636-6643.
MLA Qiuyu Shang,et al."Role of the Exciton-Polariton in a Continuous-Wave Optically Pumped CsPbBr3Perovskite Laser".Nano Letters 20.9(2020):6636-6643.
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