Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/175986
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Title

Highly Efficient and Environmentally Stable Flexible Color Converters Based on Confined CH3NH3PbBr3 Nanocrystals

AuthorsRubino, Andrea; Anaya, Miguel CSIC ORCID; Galisteo-López, Juan F.; Rojas, T. Cristina; Calvo, Mauricio E. CSIC ORCID ; Míguez, Hernán CSIC ORCID
KeywordsFlexible film
Quantum yield
Quantum confinement
Nanocrystals
Perovskites
Color converters
Issue Date2018
PublisherAmerican Chemical Society
CitationACS Applied Materials and Interfaces 10: 38334-38340 (2018)
AbstractIn this work, we demonstrate a synthetic route to attain methylammonium lead bromide (CHNHPbBr) perovskite nanocrystals (nc-MAPbBr, 1.5 nm < size < 3 nm) and provide them with functionality as highly efficient flexible, transparent, environmentally stable, and adaptable color-converting films. We use nanoparticle metal oxide (MOx) thin films as porous scaffolds of controlled nanopores size distribution to synthesize nc-MAPbBr through the infiltration of perovskite liquid precursors. We find that the control over the reaction volume imposed by the nanoporous scaffold gives rise to a strict control of the nanocrystal size, which allows us to observe well-defined quantum confinement effects on the photo-emission, being the luminescence maximum tunable with precision between = 530 nm (green) and = 490 nm (blue). This hybrid nc-MAPbBr/MOx structure presents high mechanical stability and permits subsequent infiltration with an elastomer to achieve a self-standing flexible film, which not only maintains the photo-emission efficiency of the nc-MAPbBr unaltered but also prevents their environmental degradation. Applications as adaptable color-converting layers for light-emitting devices are envisaged and demonstrated.
URIhttp://hdl.handle.net/10261/175986
DOI10.1021/acsami.8b11706
Identifiersdoi: 10.1021/acsami.8b11706
issn: 1944-8252
Appears in Collections:(ICMS) Artículos




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