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BaZrO3 perovskite nanoparticles as emissive material for organic/inorganic hybrid light-emitting diodes
KTH, School of Biotechnology (BIO), Theoretical Chemistry and Biology. Bohdan Khmelnytsky National University, Ukraine.ORCID iD: 0000-0002-0716-3385
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2017 (English)In: Dyes and pigments, ISSN 0143-7208, E-ISSN 1873-3743, Vol. 145, p. 399-403Article in journal (Refereed) Published
Abstract [en]

In the present work we have demonstrated double-channel emission from organic exciplexes coupled to inorganic nanoparticles. The process is demonstrated by yellow-green emission in light-emitting diodes based on organic exciplexes hybridized with perovskite-type dispersed BaZrO3 nanoparticles. Such double-channel emission provides a broadening of the electroluminescence spectrum and a resultant yellow-green emission color of the device. We have realized an energy transfer from the exciplexes arranged by the interface between two organic layers and the spherical-shaped BaZrO3 nanoparticles randomly deposited on the organic interface constructed of the tris(4-carbazoyl-9-ylphenyl)amine and 4,7-diphenyl-1,10-phenanthroline molecules. The fabricated device exhibits a current efficiency value of 3.88 C d/A, maximum brightness of 3465 cd/m2 (at 15 V), and external quantum efficiency of about 1.26%. In order to estimate the efficiency of the energy transfer from the exciplex to the BaZrO3 nanoparticles we have applied the Förster model for the dipole-dipole energy transfer accounting for the mutual overlap of the exciplex emission spectrum and the absorption spectrum of the BaZrO3 nanoparticles.

Place, publisher, year, edition, pages
Elsevier, 2017. Vol. 145, p. 399-403
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URN: urn:nbn:se:kth:diva-210586DOI: 10.1016/j.dyepig.2017.06.020ISI: 000405972900049Scopus ID: 2-s2.0-85020881242OAI: oai:DiVA.org:kth-210586DiVA, id: diva2:1119091
Funder
EU, Horizon 2020, 641725Carl Tryggers foundation , CTS 16:536EU, FP7, Seventh Framework Programme, 612670
Note

QC 20170703

Available from: 2017-07-03 Created: 2017-07-03 Last updated: 2017-08-11Bibliographically approved

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