| 초록 |
We report high-performance full-color AC EL devices with non-radiating polymers solution-blended in fluorescent polymer emissive layers. Conventional non-radiating polymers such as poly(styrene) (PS) and poly(a-methyl styrene) in an emissive layer significantly enhanced the brightness of individual red (R), green (G) and blue (B) colors to several thousand cd m-2. This resulted in the hole and electron carriers being balanced in the emissive layer, leading to improved power efficiency and luminous current efficiency. Furthermore, our blended emission film consisting of 83 vol% PS is mechanically robust with excellent surface adhesion as well as uniformity, when combined with scratch-tolerant AC device architecture, not only resulted in large area cell operation but also allowed for a solution-based pattern-mask process with detachable Scotch tape, giving rise to well-defined R, G and B cells individually addressable in a single device platform. |
