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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
刊名JOURNAL OF PHYSICAL CHEMISTRY LETTERS
2017-10-19
DOI10.1021/acs.jpclett.7b02178
8期:20页:5119-5124
收录类别SCI
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
类目[WOS]Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]SHELL QUANTUM DOTS ; ABSORPTION CROSS-SECTION ; OPTICAL-DATA STORAGE ; STIMULATED-EMISSION ; FLUORESCENT-PROBE ; LIVE CELLS ; PHOTOLUMINESCENCE ; PHOTOSTABILITY ; EVOLUTION ; SHIFT
英文摘要Cesium 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.
语种英语
WOS记录号WOS:000413798300024
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被引频次:3[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://cas-ir.dicp.ac.cn/handle/321008/149707
专题中国科学院大连化学物理研究所
作者单位1.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
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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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