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Highly Efficient Solution‐Processable Nanophosphor with Ambipolar Shell
Author(s) -
Han Chunmiao,
Xie Guohua,
Xu Hui
Publication year - 2018
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.201705037
Subject(s) - ambipolar diffusion , iridium , materials science , exciton , bilayer , phosphorescence , shell (structure) , nanotechnology , optoelectronics , chemical physics , chemistry , membrane , electron , fluorescence , physics , condensed matter physics , organic chemistry , optics , biochemistry , quantum mechanics , catalysis , composite material
Abstract Super‐resolution display (SRD) is crucial to all super‐resolution processing technologies for visualization terminals. Herein, as a proof‐of‐concept, an iridium‐complexed nanoemitter, [Ir(CzPOPBI) 3 ] (CzPOPBI=9,9′‐(3,3′‐(4‐(1‐(3‐(4‐(diphenylphosphoryl)phenoxy)propyl)‐1 H ‐benzo[ d ]imidazol‐2‐yl)‐1,2‐phenylene)bis(oxy)bis(propane‐3,1‐diyl))bis(3,6‐di‐ tert ‐butyl‐9 H ‐carbazole)), with a core–shell structure for charge and exciton spatial allocation is reported, the ambipolar shell of which can balance shell‐to‐core charge transfer and excess charge export. As a result, top performance of spin‐coated host‐free bilayer devices was realized, owing to the simultaneous exciton confinement in the core and exciton‐charge quenching suppression. The competence of [Ir(CzPOPBI) 3 ] as a single‐molecule emissive layer of nanopixel units shows the great potential of this kind of organic core–shell system for high‐performance SRD applications.