There’s a new type of LED in town. These light-emitting diodes (LEDs) are made from a material called perovskite, a calcium titanium oxide mineral that is more closely associated with cheap solar ...

Various properties of organic light-emitting diodes (OLEDs) have been optimized, including current to photon conversion efficiency. An external quantum efficiency exceeding 20%, with internal quantum ...

To be more energy efficient, many people have replaced their incandescent lights with light-emitting diode (LED) bulbs. However, those currently on the market emit a lot of blue light, which has been ...

A diode is a semiconductor device that allows electrical current to flow in one direction while blocking it in the other.