Novel source to beat blue âbottleneckâ in OLED displays 06 Jan 2021 Researchers in Japan achieve breakthrough with new combination of emitter molecules. True blue: Highly efficient, pure-blue OLEDs under test.Employing a new combination of emitter molecules, researchers in Japan have demonstrated the promise of a novel approach to overcoming a challenge that has limited the performance of OLED displays: a blue light source to match the relatively better performance of the red and green ones. By splitting energy conversion and emission processes between two molecules, the Kyushu Un...