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231225s2018 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201800596
|2 doi
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|a pubmed24n0947.xml
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|a (NLM)29782676
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|a DE-627
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|a eng
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|a Huang, Ling
|e verfasserin
|4 aut
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|a Composition-Graded Cesium Lead Halide Perovskite Nanowires with Tunable Dual-Color Lasing Performance
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|c 2018
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 01.08.2018
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|a Date Revised 01.10.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Cesium lead halide (CsPbX3 ) perovskite has emerged as a promising low-threshold multicolor laser material; however, realizing wavelength-tunable lasing output from a single CsPbX3 nanostructure is still constrained by integrating different composition. Here, the direct synthesis of composition-graded CsPbBrx I3-x nanowires (NWs) is reported through vapor-phase epitaxial growth on mica. The graded composition along the NW, with an increased Br/I from the center to the ends, comes from desynchronized deposition of cesium lead halides and temperature-controlled anion-exchange reaction. The graded composition results in varied bandgaps along the NW, which induce a blueshifted emission from the center to the ends. As an efficient gain media, the nanowire exerts position-dependent lasing performance, with a different color at the ends and center respectively above the threshold. Meanwhile, dual-color lasing with a wavelength separation of 35 nm is activated simultaneously at a site with an intermediate composition. This position-dependent dual-color lasing from a single nanowire makes these metal halide perovskites promising for applications in nanoscale optical devices
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|a Journal Article
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|a anion exchange
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|a cesium lead halide perovskite nanowires
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|a desynchronized deposition
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|a dual-color lasing
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|a Gao, Qinggang
|e verfasserin
|4 aut
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|a Sun, Ling-Dong
|e verfasserin
|4 aut
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|a Dong, Hao
|e verfasserin
|4 aut
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|a Shi, Shuo
|e verfasserin
|4 aut
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|a Cai, Tong
|e verfasserin
|4 aut
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|a Liao, Qing
|e verfasserin
|4 aut
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|a Yan, Chun-Hua
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 30(2018), 27 vom: 21. Juli, Seite e1800596
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:30
|g year:2018
|g number:27
|g day:21
|g month:07
|g pages:e1800596
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|u http://dx.doi.org/10.1002/adma.201800596
|3 Volltext
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