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Enhanced Size Selection in Two-Photon Excitation for CsPbBr3 Perovskite Nanocrystals
Chen, Junsheng1,2,3; Chabera, Pavel1,2; Pascher, Torbjorn1,2; Messing, Maria E.4,5; Schaller, Richard6,7; Canton, Sophie8,9; Zheng, Kaibo1,2,10; Pullerits, Tonu1,2
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
2017-10-19
DOI10.1021/acs.jpclett.7b02178
Volume8Issue:20Pages:5119-5124
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordSHELL QUANTUM DOTS ; ABSORPTION CROSS-SECTION ; OPTICAL-DATA STORAGE ; STIMULATED-EMISSION ; FLUORESCENT-PROBE ; LIVE CELLS ; PHOTOLUMINESCENCE ; PHOTOSTABILITY ; EVOLUTION ; SHIFT
AbstractCesium lead bromide (CsPbBr3) perovskite nanocrystals (NCs), with large two-photon absorption (TPA) cross-section and bright photoluminescence (PL), have been demonstrated as stable two-photon-pumped lasing medium. With two-photon excitation, red-shifted PL spectrum and increased PL lifetime is observed compared with one-photon excitation. We have investigated the origin of such difference using time resolved laser spectroscopies. We ascribe the difference to the enhanced size selection of NCs by two-photon excitation. Because of inherent nonlinearity, the size dependence of absorption cross-section under TPA is stronger. Consequently, larger size NCs are preferably excited, leading to longer excited-state lifetime and red-shifted PL emission. In a broad view, the enhanced size selection in two-photon excitation of CsPbBr3 NCs is likely a general feature of the perovskite NCs and can be tuned via NC size distribution to influence their performance within NC-based nonlinear optical materials and devices.
Language英语
WOS IDWOS:000413798300024
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/149707
Collection中国科学院大连化学物理研究所
Affiliation1.Lund Univ, Dept Chem Phys, POB 124, S-22100 Lund, Sweden
2.Lund Univ, NanoLund, POB 124, S-22100 Lund, Sweden
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
4.Lund Univ, Solid State Phys, Box 118, S-22100 Lund, Sweden
5.Lund Univ, NanoLund, Box 118, S-22100 Lund, Sweden
6.Argonne Natl Lab, Ctr Nanoscale Mat, 9700 Cass Ave, Argonne, IL 60439 USA
7.Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA
8.ELI HU Nonprofit Ltd, ELI ALPS, Dugon Ter 13, H-6720 Szeged, Hungary
9.Deutsch Elektronen Synchrotron DESY, Attosci Grp, Notkestr 85, D-22607 Hamburg, Germany
10.Qatar Univ, Coll Engn, Gas Proc Ctr, POB 2713, Doha, Qatar
Recommended Citation
GB/T 7714
Chen, Junsheng,Chabera, Pavel,Pascher, Torbjorn,et al. Enhanced Size Selection in Two-Photon Excitation for CsPbBr3 Perovskite Nanocrystals[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(20):5119-5124.
APA Chen, Junsheng.,Chabera, Pavel.,Pascher, Torbjorn.,Messing, Maria E..,Schaller, Richard.,...&Pullerits, Tonu.(2017).Enhanced Size Selection in Two-Photon Excitation for CsPbBr3 Perovskite Nanocrystals.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(20),5119-5124.
MLA Chen, Junsheng,et al."Enhanced Size Selection in Two-Photon Excitation for CsPbBr3 Perovskite Nanocrystals".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.20(2017):5119-5124.
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