1. BaZrO3 perovskite nanoparticles as emissive material for organic/inorganic hybrid light-emitting diodes
- Author
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Gleb V. Baryshnikov, J.V. Grazulevicius, Khrystyna Ivaniuk, Boris F. Minaev, Vladyslav Cherpak, Y. Zhydachevskii, Zenon Hotra, Sigitas Tamulevičius, Olena Aksimentyeva, Hans Ågren, Pavlo Stakhira, Algirdas Lazauskas, B. Penyukh, Pavlo Turyk, and Dmytro Volyniuk
- Subjects
Annan kemi ,Materials science ,Astrophysics::High Energy Astrophysical Phenomena ,General Chemical Engineering ,Physics::Medical Physics ,Nanoparticle ,Astrophysics::Cosmology and Extragalactic Astrophysics ,02 engineering and technology ,01 natural sciences ,7. Clean energy ,law.invention ,law ,0103 physical sciences ,Organic inorganic ,Physics::Atomic and Molecular Clusters ,Astrophysics::Galaxy Astrophysics ,Perovskite (structure) ,010302 applied physics ,business.industry ,Process Chemistry and Technology ,021001 nanoscience & nanotechnology ,Optoelectronics ,Other Chemistry Topics ,0210 nano-technology ,business ,Inorganic nanoparticles ,Light-emitting diode - Abstract
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.
- Published
- 2017
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