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White-emitting organometallo-silica nanoparticles for sun-like light-emitting diodes


This work discloses a radically new way to prepare white-emitting hybrid nanoparticles, whose implementation in lighting devices provides encouraging proof-of-concept performances towards alternative sunlight sources. In detail, the new synthetic approach is based on the kinetic control of the formation of organometallic dots, built via the condensation of three emitting iridium(III) complexes, which are subsequently transformed into mesoporous silica nanoparticles. Our novel hybrid systems, which are exceptionally stable under severe irradiation and thermal stress scenarios, show a bright white emission with a record photoluminescence quantum yield. Their remarkable performance prompted us to implement them into single-component hybrid light-emitting diodes (HLEDs), achieving a high-quality sunlight source that is stable over thousands of hours. This represents one of the most stable HLEDs reported so far, while the versatility of our synthesis approach with respect to the type of emitters opens new opportunities for the design and fabrication of the HLEDs of the future.

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Publication details

The article was received on 16 May 2018, accepted on 10 Sep 2018 and first published on 10 Sep 2018

Article type: Communication
DOI: 10.1039/C8MH00578H
Citation: Mater. Horiz., 2018, Accepted Manuscript
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    White-emitting organometallo-silica nanoparticles for sun-like light-emitting diodes

    C. Izquierdo, E. Fresta, E. Serrano, E. Lalinde Peña, J. Garcia-Martinez, J. R. R. Berenguer and R. D. Costa, Mater. Horiz., 2018, Accepted Manuscript , DOI: 10.1039/C8MH00578H

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