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On page 4681, Y.‐J. Pu, J. Kido, and T. Chiba describe solution processed white‐phosphorescent tandem organic light‐emitting devices (OLEDs) comprising two light‐emitting units (LEUs) with small‐molecule phosphorescent emitters, small‐molecule host materials, and a polymer material as a binder improving the insolubility of the LEU films. These devices exhibit extremely high efficiencies with a current...
Solution‐processed phosphorescent tandem organic light‐emitting devices (OLEDs) exhibit extremely high efficiencies (94 cd A−1) and 26% external quantum efficiency (EQE) at 5000 cd m−2 for green phosphorescent devices and 69 cd A−1 and 28% EQE at 5000 cd m−2 for white phosphorescent devices. Development of these highly efficient solution‐processed tandem‐OLEDs with inverted device structure paves...
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