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High Optical Gain of Solution-Processed Mixed-Cation CsPbBr3 Thin Films towards Enhanced Amplified Spontaneous Emission
Li, Meili1; Shang, Qiuyu1; Li, Chun1,2; Li, Shuai3; Liang, Yin1; Yu, Wenjin4; Wu, Cuncun4; Zhao, Liyun1; Zhong, Yangguang2; Du, Wenna2; Wu, Xianxin2; Jia, Zhili2; Gao, Yan1; Chen, Hui1; Liu, Xinfeng2; Guo, Shaojun1; Liao, Qing3; Xing, Guichuan5; Xiao, Lixin4; Zhang, Qing1
2021-07-16
Source PublicationAdvanced Functional Materials
ISSN1616-301X
Volume31Issue:25Pages:2102210
Other Abstract

A solution-processed thin film made of all-inorganic CsPbBr perovskite is a promising candidate for low-cost and flexible green-color lasers. However, the amplified spontaneous emission (ASE) of solution-processed CsPbBr films still experiences a high threshold owing to poor morphology and insufficient optical gain. Here, a multiple-cation doping strategy is demonstrated to develop compact, smooth thin films of Cs(FAMA)PbBr/(NMA)PbBr (FA: formamidinium; MA: methylammonium; NMA: naphthylmethylammonium) with a record high net modal optical gain of ≈3030 cm and low propagation loss of 1.0 cm. The FA and MA cations improve the crystallization kinetics to form continuous films, and the NMA cations reduce the grain dimension, increase film dispersibility/uniformity, and enhance spatial confinement to promote optical gain. Room-temperature ASE is demonstrated under a low threshold of ≈3.8 µJ cm without degradation after four months of storage in glove box or excitation by 3 × 10 laser pulses. These findings provide insights into enhancing the optical gain and lowering the threshold of perovskite lasers in terms of molecular synthesis and microstructure engineering.

DOI10.1002/adfm.202102210
URLView the original
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:000638680200001
PublisherWILEY-V C H VERLAG GMBH,POSTFACH 101161, 69451 WEINHEIM, GERMANY
Scopus ID2-s2.0-85104110943
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Cited Times [WOS]:1   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionINSTITUTE OF APPLIED PHYSICS AND MATERIALS ENGINEERING
Corresponding AuthorZhang, Qing
Affiliation1.School of Materials Sciences and Engineering; College of Engineering, Peking University, Beijing, 100871, China
2.CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center of Excellence for Nanoscience, National Center for Nanoscience and Technology, Beijing, 100190, China
3.Beijing Key Laboratory for Optical Materials and Photonic Devices, Department of Chemistry, Capital Normal University, Beijing, 100048, China
4.State Key Laboratory for Artificial Microstructure and Mesoscopic Physics, Department of Physics, Peking University, Beijing, 100871, China
5.Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade Taipa, 999078, Macao
Recommended Citation
GB/T 7714
Li, Meili,Shang, Qiuyu,Li, Chun,et al. High Optical Gain of Solution-Processed Mixed-Cation CsPbBr3 Thin Films towards Enhanced Amplified Spontaneous Emission[J]. Advanced Functional Materials,2021,31(25):2102210.
APA Li, Meili,Shang, Qiuyu,Li, Chun,Li, Shuai,Liang, Yin,Yu, Wenjin,Wu, Cuncun,Zhao, Liyun,Zhong, Yangguang,Du, Wenna,Wu, Xianxin,Jia, Zhili,Gao, Yan,Chen, Hui,Liu, Xinfeng,Guo, Shaojun,Liao, Qing,Xing, Guichuan,Xiao, Lixin,&Zhang, Qing.(2021).High Optical Gain of Solution-Processed Mixed-Cation CsPbBr3 Thin Films towards Enhanced Amplified Spontaneous Emission.Advanced Functional Materials,31(25),2102210.
MLA Li, Meili,et al."High Optical Gain of Solution-Processed Mixed-Cation CsPbBr3 Thin Films towards Enhanced Amplified Spontaneous Emission".Advanced Functional Materials 31.25(2021):2102210.
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