Polymer-enhanced stability of inorganic perovskite nanocrystals and their application in color conversion LEDs
Meyns, Michaela (Institut de Recerca en Energia de Catalunya)
Perálvarez, Mariano (Institut de Recerca en Energia de Catalunya)
Heuer-Jungemann, Amelie (University of Southampton. Physics and Astronomy)
Hertog, Wim (Institut de Recerca en Energia de Catalunya)
Ibáñez, Maria (ETH Zürich. Institute of Inorganic Chemistry)
Nafria, Raquel (Institut de Recerca en Energia de Catalunya)
Genç, Aziz (Institut Català de Nanociència i Nanotecnologia)
Arbiol i Cobos, Jordi (Institut Català de Nanociència i Nanotecnologia)
Kovalenko, Maksym V. (ETH Zürich. Institute of Inorganic Chemistry)
Carreras, Josep (Institut de Recerca en Energia de Catalunya)
Cabot, Andreu (Institut de Recerca en Energia de Catalunya)
Kanaras, Antonios G. (University of Southampton. Physics and Astronomy)

Data:	2016
Resum:	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.
Ajuts:	Agència de Gestió d'Ajuts Universitaris i de Recerca 2014/SGR-1638 Ministerio de Economía y Competitividad MAT2014-51480-ERC Ministerio de Economía y Competitividad ENE2013-46624-C4-3-R European Commission 310250 European Commission 619912 Ministerio de Economía y Competitividad TEC2012-38901-C02-01 Ministerio de Economía y Competitividad SEV-2013-0295
Drets:	Tots els drets reservats.
Llengua:	Anglès
Document:	Article ; recerca ; Versió acceptada per publicar
Matèria:	CsPbBr₃ ; Color conversion ; Inorganic perovskite nanocrystals ; LED ; Poly(maleic anhydride-alt-1-octadecene)
Publicat a:	ACS applied materials & interfaces, Vol. 8, Issue 30 (August 2016) , p. 19579-19586, ISSN 1944-8252

DOI: 10.1021/acsami.6b02529

Post-print 14 p, 1.9 MB

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