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Ho-Hsiu Chou, Yi-Hsiang Chen, He-Pei Hsu, Wen-Hsin Chang, Yu-Han Chen and Chien-Hong Cheng Synthesis of Diimidazolylstilbenes as n-Type Blue Fluorophores: Alternative Dopant Materials for Highly Efficient Electroluminescent Devices Advanced Materials 24

Version of Record online: 23 AUG 2012 | DOI: 10.1002/adma.201202222

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Two new n-type diimidazolylstilbenes as blue-fluorescent dopant materials are synthesized and characterized. Blue-fluorescent devices based on these two compounds as the dopants reveal outstanding external quantum efficiencies (EQEs) (current efficiencies) of 7.8% (10.4 cd A−1) and 7.7% (7.9 cd A−1) with Commission internationale de l'Eclairage (CIE) co-ordinates of (0.14, 0.15) and (0.15, 0.11).

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