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Issue 11, 2011
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Highly efficient white organic electroluminescence device based on a phosphorescent orange material doped in a blue host emitter

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Abstract

A high-efficiency and pure white OLED has been realized by only doping one novel phosphorescent orange-light-emitting complex (bzq)2Ir(dipba) into a suitable deep-blue-emitting fluorescent complex Bepp2 as an emissive layer. The highest efficiency for white OLEDs with a simple HTL-EML-ETL architecture, with a peak power efficiency (PE) of 48.8 lm W−1 and a peak external quantum efficiency (EQE) of 27.8%, has been realized by employing both singlet and triplet excitons for emission. The PE and EQE at the applicable brightness of 1000 cd m−2 are 37.5 lm W−1 and 36.8%, respectively.

Graphical abstract: Highly efficient white organic electroluminescence device based on a phosphorescent orange material doped in a blue host emitter

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Supplementary files

Article information


Submitted
26 Oct 2010
Accepted
23 Dec 2010
First published
19 Jan 2011

J. Mater. Chem., 2011,21, 3551-3553
Article type
Communication

Highly efficient white organic electroluminescence device based on a phosphorescent orange material doped in a blue host emitter

T. Peng, Y. Yang, H. Bi, Y. Liu, Z. Hou and Y. Wang, J. Mater. Chem., 2011, 21, 3551
DOI: 10.1039/C0JM03645E

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