We demonstrate a man-made lighting device of organic light-emitting diode (OLED) capable of yielding a sunlight-style illumination with various daylight chromaticities, whose color temperature ranges between 2300 and 8200 K, fully covering those of the entire daylight at different times and regions. The OLED employs a device architecture capable of simultaneously generating all the emissions required to form a series of daylight chromaticities. The wide color-temperature span may be attributed to that the recombination core therein can easily be shifted along the different emissive zones simply by varying the applied voltage via the use of a thin carrier-modulating layer.
Sunlight-style color-temperature tunable organic light-emitting diode
Jwo-Huei Jou, Ming-Hsuan Wu, Shih-Ming Shen, Hsi-Ching Wang, Sun-Zen Chen, Szu-Hao Chen, Chuen-Ren Lin, Yueh-Lin Hsieh; Sunlight-style color-temperature tunable organic light-emitting diode. Appl. Phys. Lett. 6 July 2009; 95 (1): 013307. https://doi.org/10.1063/1.3176217
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