OLED device technologies are continuously evolving, step by step. Among many device technologies, recently top-emission and tandem OLED technologies are being actively researched due to several advantages such as high efficiency, good color purity, and long lifetime. In this seminar, recently reported new technologies for top-emission and tandem OLED are discussed by covering optical theory with micro-cavity effect, optical losses, and the importance of the Purcell effect in the optical calculation. Additionally, Kwon will discuss key methodologies to address high efficiency OLEDs.
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