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Luminous efficacy (LE), which is given by the ratio of luminous flux to power, is commonly used to measure the power consumption of a light source. Unfortunately, the LE of white organic light‐emitting diodes (OLEDs) still lags behind those of inorganic LED for practically used (>100 lm W−1). In this paper, an ultraefficient white OLED is discussed based on a newly designed thermally activated...
Man‐Keung Fung, and co‐workers discuss a white organic light‐emitting diode (OLED) based on a newly designed blue thermally activated delayed fluorescent (TADF) exciplex host. Using the exciplex as the host for two‐color based phosphorescent white OLEDs provides super‐high luminous efficacy and external quantum efficiency. This work provides a promising avenue to boost the development of low power‐consumption...
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