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Polymer-enhanced stability of inorganic perovskite nanocrystals and their application in color conversion LEDs

AuthorsMeyns, Michaela; Ibáñez, Maria; Nafria, Raquel; Genç, Aziz ; Arbiol, Jordi ; Cabot, Andreu; Kanaras, Antonio G.
KeywordsColor conversion
Inorganic perovskite nanocrystals
CsPbBr3, LED
Poly(maleic anhydride-alt-1-octadecene)
Issue Date2016
PublisherAmerican Chemical Society
CitationACS Applied Materials and Interfaces 8(30): 19579-19586 (2016)
AbstractCesium lead halide (CsPbX, 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 CsPbX 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.
Descriptionet al.
Identifiersdoi: 10.1021/acsami.6b02529
e-issn: 1944-8252
issn: 1944-8244
Appears in Collections:(CIN2) Artículos
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