Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
537928 | Displays | 2010 | 5 Pages |
Abstract
A blue organic light-emitting device, based on an iridium phosphorescent dopant in a polyvinylcarbazole host, has been modified by the addition of an external CaS:Eu inorganic phosphor layer. By incorporating a surfactant in the phosphor mixture, a uniform coating could be achieved by drop-casting. The resulting hybrid device exhibited white light emission, with Commission Internationale de l’Eclairage, CIE (x, y) coordinates of x = 0.32, y = 0.35. No significant change in these coordinates was observed for current densities in the range 25–510 A m−2. The maximum power efficiencies of the white device was 2.3 lm W−1 at a brightness of 254 cd m−2.
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Authors
Juan J. Giner-Casares, María T. Martín-Romero, Luis Camacho, Blanca Cocho Martinez, Duncan Cadd, Christopher Pearson, Michael C. Petty,