Solid-State White Light-Emitting Electrochemical Cells Using Iridium-Based Cationic Transition Metal Complexes
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- 27 February 2008
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 130 (11), 3413-3419
- https://doi.org/10.1021/ja076051e
Abstract
White electroluminescent (EL) emission from single-layered solid-state light-emitting electrochemical cells (LECs) based on host−guest cationic iridium complexes has been successfully demonstrated. The devices show white EL spectra (Commission Internationale de l'Eclairage coordinates ranging from (x, y) = (0.45, 0.40) to (0.35, 0.39) at 2.9−3.3 V with high color rendering indices up to 80. Peak external quantum efficiency and peak power efficiency of the white LEC reach 4% and 7.8 lm/W, respectively. These results suggest that white LECs based on host−guest cationic transition metal complexes may be a promising alternative for solid-state lighting technologies.Keywords
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