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Chemical Cutting of Perovskite Nanowires into Single-Photon Emissive Low-Aspect-Ratio CsPbX3 (X=Cl, Br, I) Nanorods.
Tong, Yu; Fu, Ming; Bladt, Eva; Huang, He; Richter, Alexander F; Wang, Kun; Müller-Buschbaum, Peter; Bals, Sara; Tamarat, Philippe; Lounis, Brahim; Feldmann, Jochen; Polavarapu, Lakshminarayana.
Afiliación
  • Tong Y; Chair for Photonics and Optoelectronics, Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799, Munich, Germany.
  • Fu M; LP2N, Université de Bordeaux, 33405, Talence, France.
  • Bladt E; LP2N, Institut d'Optique and CNRS, 33405, Talence, France.
  • Huang H; EMAT, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
  • Richter AF; Chair for Photonics and Optoelectronics, Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799, Munich, Germany.
  • Wang K; Chair for Photonics and Optoelectronics, Department of Physics and Center for NanoScience (CeNS), Ludwig-Maximilians-Universität München, Amalienstr. 54, 80799, Munich, Germany.
  • Müller-Buschbaum P; Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748, Garching, Germany.
  • Bals S; Technische Universität München, Physik-Department, Lehrstuhl für Funktionelle Materialien, James-Franck-Str. 1, 85748, Garching, Germany.
  • Tamarat P; EMAT, University of Antwerp, Groenenborgerlaan 171, 2020, Antwerp, Belgium.
  • Lounis B; LP2N, Université de Bordeaux, 33405, Talence, France.
  • Feldmann J; LP2N, Institut d'Optique and CNRS, 33405, Talence, France.
  • Polavarapu L; LP2N, Université de Bordeaux, 33405, Talence, France.
Angew Chem Int Ed Engl ; 57(49): 16094-16098, 2018 Dec 03.
Article en En | MEDLINE | ID: mdl-30311989
Post-synthetic shape-transformation processes provide access to colloidal nanocrystal morphologies that are unattainable by direct synthetic routes. Herein, we report our finding about the ligand-induced fragmentation of CsPbBr3 perovskite nanowires (NWs) into low aspect-ratio CsPbX3 (X=Cl, Br and I) nanorods (NRs) during halide ion exchange reaction with PbX2 -ligand solution. The shape transformation of NWs-to-NRs resulted in an increase of photoluminescence efficiency owing to a decrease of nonradiative decay rates. Importantly, we found that the perovskite NRs exhibit single photon emission as revealed by photon antibunching measurements, while it is not detected in parent NWs. This work not only reports on the quantum light emission of low aspect ratio perovskite NRs, but also expands our current understanding of shape-dependent optical properties of perovskite nanocrystals.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2018 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Año: 2018 Tipo del documento: Article País de afiliación: Alemania Pais de publicación: Alemania