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Realization of high efficacy white organic light emitting diode by controlling internal light absorption and angular distribution |
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| Authors: | Kazuyuki Yamae Varutt Kittichungchit Nobuhiro Ide Masuyuki Ota Takuya Komoda |
| Affiliation: | Panasonic Corporation, Eco Solutions Company, , Kadoma, Osaka, Japan |
| Abstract: | We investigated highly efficient organic light emitting diode (OLED) with advanced optical designs of organic layers to convert evanescent mode (internal absorption) into guided light and micro structure to extract the specifically distributed guided light dominated by wide angular substrate mode. White OLED device based on these optical designs realized high efficacy of 133 lm/W and external quantum efficiency of 56 % at 1000 cd/m2. |
| Keywords: | OLED light extraction efficiency outcoupling refractive index evanescent mode incident angle phosphorescent |