Taiwan researchers create OLEDs with color temp spectrum of sunlight
An interesting OLED development to note – from EDN’s PowerSource blog by Margery Conner:
Researchers at National Tsing Hua University in Taiwan have developed organic LEDs (OLEDs) with a full range of color temperatures capable of mimicking the full spectrum of sunlight throughout the day (2500 K – 8000 K), making the technology especially useful for lighting in northern countries.
As the researchers explain, changing the voltage varies the color temperature by increasing the number of electrons and holes transported between certain layers. For example, at 3 volts, the illumination is predominantly red, at 5.5 volts it turns to pure white, and at 9 volts becomes bluish white.”