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Room Temperature Continuous-wave Excited Biexciton Emission in CsPbBr3 Nanocrystals
Jie Chen1,2,3; Qing Zhang3,4; Wenna Du1; Yang Mi1; Qiuyu Shang3,4; Jia Shi1,2; Pengchong Liu1,2; Xinyu Sui1,2; Xianxin Wu1,2; Rui Wang1; Bo Peng5; Haizheng Zhong6; Guichuan Xing7; Xiaohui Qiu1,2; Tze Chien Sum8; Xinfeng Liu1,2
2018-04-17
Source PublicationMesoscale and Nanoscale Physics
Other Abstract

Biexcitons are a manifestation of many-body excitonic interactions crucial for quantum information and quantum computation in the construction of coherent combinations of quantum states. However, due to their small binding energy and low transition efficiency, most biexcitons in conventional semiconductors exist either at cryogenic temperature or under femtosecond pulse laser excitation. Here we demonstrate room temperature, continuous wave driven biexciton states in CsPbBr3 perovskite nanocrystals through coupling with a plasmonic nanogap. The room temperature CsPbBr3 biexciton excitation fluence (~100 mW/cm2 ) is reduced by ~1013 times in the Ag nanowire-film nanogaps. The giant enhancement of biexciton emission is driven by coherent biexciton-plasmon Fano interference. These results provide new pathways to develop high efficiency non-blinking single photon sources, entangled light sources and lasers based on biexciton states.

Language英语
Fulltext Access
Document TypeJournal article
CollectionDEPARTMENT OF PHYSICS AND CHEMISTRY
Institute of Applied Physics and Materials Engineering
Corresponding AuthorQing Zhang; Tze Chien Sum; Xinfeng Liu
Affiliation1.Division of Nanophotonics, CAS Key Laboratory of Standardization and Measurement for Nanotechnology, CAS Center for Excellence in Nanoscience, National Center for Nanoscience and Technology, Beijing 100190, China
2.University of Chinese Academy of Sciences 19 A Yuquan Rd, Shijingshan District, Beijing 100049, China
3.Department of Materials Science and Engineering, College of Engineering, Peking University, Beijing 100871, China
4.Research Center for Wide Band Semiconductor, Peking University, China
5.National Engineering Research Center of Electromagnetic Radiation Control Materials and State Key Laboratory of Electronic Thin Films and Integrated Devices, University of Electronic Science and Technology of China
6.Beijing Key Laboratory of Nanophotonics and Ultrafine Optoelectronic Systems, School of Materials Science & Engineering, Beijing Institute of Technology, China
7.Institute of Applied Physics and Materials Engineering, University of Macau, China
8.School of Physical & Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore
Recommended Citation
GB/T 7714
Jie Chen,Qing Zhang,Wenna Du,et al. Room Temperature Continuous-wave Excited Biexciton Emission in CsPbBr3 Nanocrystals[J]. Mesoscale and Nanoscale Physics,2018.
APA Jie Chen.,Qing Zhang.,Wenna Du.,Yang Mi.,Qiuyu Shang.,...&Xinfeng Liu.(2018).Room Temperature Continuous-wave Excited Biexciton Emission in CsPbBr3 Nanocrystals.Mesoscale and Nanoscale Physics.
MLA Jie Chen,et al."Room Temperature Continuous-wave Excited Biexciton Emission in CsPbBr3 Nanocrystals".Mesoscale and Nanoscale Physics (2018).
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