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Two-Photon Optical Properties in Individual Organic-Inorganic Perovskite Microplates
Qi Wei1; Bin Du1; Bo Wu2; Jia Guo1; Ming jie Li2; Jianhui Fu2; Zhipeng Zhang1; Jianwei Yu1; Tianyu Hou1; Guichuan Xing3; Tze Chien Sum2; Wei Huang1
2017-12-15
Source PublicationAdvanced Optical Materials
ISSN2195-1071
Volume5Issue:24
Other Abstract

Metal-halide perovskites are recently extensively investigated as light absorbing material in solar cells. The outstanding optoelectronic properties and tunable light emission of the perovskites also make them promising candidates for light emitting diodes and lasers. However, understanding the relevant mechanisms and processes of the dependence of perovskite light emission on temperature and crystal size is still challenging. Herein, the CH3NH3PbBr3 monocrystals of different sizes are uniformly excited by two-photon absorption at 800 nm (100 fs, 1 KHz). In contrast to the reported relative large exciton binding energy (approximate to 76 meV) and spectrum clearly resolved excitonic absorption, the light emission origin in CH3NH3PbBr3 microcrystals at room temperature is unambiguously determined to be dominated by free electron-hole bimolecular recombination. The coherent light emission threshold of CH3NH3PbBr3 microcrystal increases with temperature, which is closely related to the temperature induced transition from exciton gas to free charge carriers. In addition, the coherent light emission threshold is found to decrease with the microcrystal size, which could be well interpreted by the interaction between the optical confinement, defect density, and cavity quantum electrodynamics effect. These results presented here may facilitate the development of perovskite light emitting diodes and lasers.

KeywordAmplified Spontaneous Emission Excitons And Free Carriers Microlasers Multiphoton Absorption Perovskites
DOIhttps://doi.org/10.1002/adom.201700809
URLView the original
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Optics
WOS SubjectMaterials Science, Multidisciplinary ; Optics
WOS IDWOS:000418123300013
PublisherWILEY-V C H VERLAG GMBH
The Source to ArticleWOS
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Cited Times [WOS]:11   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionInstitute of Applied Physics and Materials Engineering
Corresponding AuthorGuichuan Xing; Tze Chien Sum; Wei Huang
Affiliation1.Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM), Nanjing Tech University (NanjingTech), 30 South Puzhu Road, Nanjing, 211816 China
2.Division of Physics and Applied Physics, School of Physical and Mathematical Sciences, Nanyang Technological University (NTU), 21 Nanyang Link, 637371 Singapore, Singapore
3.Institute of Applied Physics and Materials Engineering, University of Macau, Macao SAR, 999078 China
Corresponding Author AffilicationInstitute of Applied Physics and Materials Engineering
Recommended Citation
GB/T 7714
Qi Wei,Bin Du,Bo Wu,et al. Two-Photon Optical Properties in Individual Organic-Inorganic Perovskite Microplates[J]. Advanced Optical Materials,2017,5(24).
APA Qi Wei.,Bin Du.,Bo Wu.,Jia Guo.,Ming jie Li.,...&Wei Huang.(2017).Two-Photon Optical Properties in Individual Organic-Inorganic Perovskite Microplates.Advanced Optical Materials,5(24).
MLA Qi Wei,et al."Two-Photon Optical Properties in Individual Organic-Inorganic Perovskite Microplates".Advanced Optical Materials 5.24(2017).
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