Novaled is showing a new white top-emitting OLED, that has over 50,000h lifetime and 30lm/W power efficiency (at an initial luminance of 1,000 cd/m2). The OLED is produced on a metal substrate. Novaled has developed a high performance white top emitting OLED using the Novaled PIN OLED® technology with its proprietary doping and host materials in association with a blue fluorescent emitting material from SFC Korea.
The device has an ITO-free top contact and corporates a Novaled-specific light extraction material layer to enhance the efficiency. At the same time this outcoupling material reduces the color shift over a wide viewing angle so that it can hardly be detected by the naked eye.
The device reaches a high power efficiency of 30 lm/W measured in an integrating sphere. Broad emission spectrum and good CIE color coordinates (0.46/0.42) were achieved in the devices, which is close to illuminant A and inside the US Department of Energy (DOE) quadrangles.