Organic Light-Emitting Diode with Color Tunable between Bluish-White Daylight and Orange-White Dusk Hue

Figure 3

For the studied sunlight-style OLED (Device-I-3), its color temperature changes from 2,290 to 9,280 K and color rendering index from 74 to 84.4 as the applied voltage is increased from 3 to 11.5 V.