title: Polymer-Enhanced Stability of Inorganic Perovskite Nanocrystals and Their Application in Color Conversion LEDs.
abstract: Cesium lead halide (CsPbX3, X = Cl, Br, I) nanocrystals (NCs) offer exceptional optical properties for several potential applications but their implementation is hindered by a low chemical and structural stability and limited processability. In the present work, we developed a new method to efficiently coat CsPbX3 NCs, which resulted in their increased chemical and optical stability as well as processability. The method is based on the incorporation of poly(maleic anhydride-alt-1-octadecene) (PMA) into the synthesis of the perovskite NCs. The presence of PMA in the ligand shell stabilizes the NCs by tightening the ligand binding, limiting in this way the NC surface interaction with the surrounding media. We further show that these NCs can be embedded in self-standing silicone/glass plates as down-conversion filters for the fabrication of monochromatic green and white light emitting diodes (LEDs) with narrow bandwidths and appealing color characteristics.
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.
authors.forename: Michaela
authors.initials: M
authors.lastname: Meyns
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.
authors.forename: Mariano
authors.initials: M
authors.lastname: Perálvarez
authors.affiliation: Physics and Astronomy, Faculty of Physical Sciences and Engineering, University of Southampton , Highfield, Southampton, SO17 1BJ, U.K.
authors.forename: Amelie
authors.initials: A
authors.lastname: Heuer-Jungemann
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.
authors.forename: Wim
authors.initials: W
authors.lastname: Hertog
authors.affiliation: Metallurgy and Materials Engineering Department, Faculty of Engineering, Bartin University , 74100, Bartin, Turkey.|Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich , CH-8093 Zurich, Switzerland.
authors.forename: Maria
authors.initials: M
authors.lastname: Ibáñez
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.
authors.forename: Raquel
authors.initials: R
authors.lastname: Nafria
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain.|Metallurgy and Materials Engineering Department, Faculty of Engineering, Bartin University , 74100, Bartin, Turkey.
authors.forename: Aziz
authors.initials: A
authors.lastname: Genç
authors.affiliation: Catalan Institute of Nanoscience and Nanotechnology (ICN2), CSIC, and The Barcelona Institute of Science and Technology (BIST), Campus UAB, Bellaterra, 08193 Barcelona, Spain.|ICREA, Pg. , Lluís Companys 23, 8010 Barcelona, Spain.
authors.forename: Jordi
authors.initials: J
authors.lastname: Arbiol
authors.affiliation: Institute of Inorganic Chemistry, Department of Chemistry and Applied Biosciences, ETH Zürich , CH-8093 Zurich, Switzerland.
authors.forename: Maksym V
authors.initials: MV
authors.lastname: Kovalenko
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.
authors.forename: Josep
authors.initials: J
authors.lastname: Carreras
authors.affiliation: Catalonia Institute for Energy Research-IREC , Sant Adrià de Besòs, Barcelona, 08930, Spain.|ICREA, Pg. , Lluís Companys 23, 8010 Barcelona, Spain.
authors.forename: Andreu
authors.initials: A
authors.lastname: Cabot
authors.affiliation: Physics and Astronomy, Faculty of Physical Sciences and Engineering, University of Southampton , Highfield, Southampton, SO17 1BJ, U.K.
authors.forename: Antonios G
authors.initials: AG
authors.lastname: Kanaras
keywords: CsPbBr3; LED; color conversion; inorganic perovskite nanocrystals; poly(maleic anhydride-alt-1-octadecene)