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Lasing from Mechanically Exfoliated 2D Homologous Ruddlesden–Popper Perovskite Engineered by Inorganic Layer Thickness
Liang,Yin1; Shang,Qiuyu1; Wei,Qi1,2; Zhao,Liyun1; Liu,Zhen1; Shi,Jia3; Zhong,Yangguang3; Chen,Jie3; Gao,Yan1; Li,Meili1; Liu,Xinfeng3; Xing,Guichuan4; Zhang,Qing1
2019-09-01
Source PublicationAdvanced Materials
ISSN0935-9648
Volume31Issue:39
Abstract2D Ruddlesden–Popper perovskites (RPPs) have aroused growing attention in light harvesting and emission applications owing to their high environmental stability. Recently, coherent light emission of RPPs was reported, however mostly from inhomologous thin films that involve cascade intercompositional energy transfer. Lasing and fundamental understanding of intrinsic laser dynamics in homologous RPPs free from intercompositional energy transfer is still inadequate. Herein, the lasing and loss mechanisms of homologous 2D (BA)(MA) PbI RPP thin flakes mechanically exfoliated from the bulk crystal are reported. Multicolor lasing is achieved from the large-n RPPs (n ≥ 3) in the spectral range of 620–680 nm but not from small-n RPPs (n ≤ 2) even down to 78 K. With decreasing n, the lasing threshold increases significantly and the characteristic temperature decreases as 49, 25, and 20 K for n = 5, 4, and 3, respectively. The n-engineered lasing behaviors are attributed to the stronger Auger recombination and exciton–phonon interaction as a result of the enhanced quantum confinement in the smaller-n perovskites. These results not only advance the fundamental understanding of loss mechanisms in both inhomologous and homologous RPP lasers but also provide insights into developing low-threshold, substrate-free, and multicolor 2D semiconductor microlasers.
Keyword2D semiconductors carrier dynamics lasing layered materials microlasers Ruddlesden–Popper perovskites
DOI10.1002/adma.201903030
URLView the original
Language英语
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Cited Times [WOS]:36   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
Corresponding AuthorXing,Guichuan
Affiliation1.Department of Materials Science and Engineering,College of Engineering,Peking University,Beijing,100871,China
2.MIIT Key Laboratory of Flexible Electronics (KLoFE),Xi'an Institute of Flexible Electronics,Northwestern Polytechnical University,Xi'an,710072,China
3.CAS Key Laboratory of Standardization and Measurement for Nanotechnology,CAS Center for Excellence in Nanoscience,National Center for Nanoscience and Technology,Beijing,100190,China
4.Joint Key Laboratory of the Ministry of Education,Institute of Applied Physics and Materials Engineering,University of Macau,Avenida da Universidade,Taipa,999078,Macao
Corresponding Author AffilicationINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Recommended Citation
GB/T 7714
Liang,Yin,Shang,Qiuyu,Wei,Qi,et al. Lasing from Mechanically Exfoliated 2D Homologous Ruddlesden–Popper Perovskite Engineered by Inorganic Layer Thickness[J]. Advanced Materials,2019,31(39).
APA Liang,Yin,Shang,Qiuyu,Wei,Qi,Zhao,Liyun,Liu,Zhen,Shi,Jia,Zhong,Yangguang,Chen,Jie,Gao,Yan,Li,Meili,Liu,Xinfeng,Xing,Guichuan,&Zhang,Qing.(2019).Lasing from Mechanically Exfoliated 2D Homologous Ruddlesden–Popper Perovskite Engineered by Inorganic Layer Thickness.Advanced Materials,31(39).
MLA Liang,Yin,et al."Lasing from Mechanically Exfoliated 2D Homologous Ruddlesden–Popper Perovskite Engineered by Inorganic Layer Thickness".Advanced Materials 31.39(2019).
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