An RGB LED. By mixing the red, green, and blue colors, this LED can emit white light The first white LEDs weren’t explicitly white LEDs. Instead, red, green, and blue LEDs were packed into a ...

White light-emitting diodes (LEDs), the semiconductor devices underpinning the functioning of countless lighting technologies ...

White LEDs got better and cheaper in 30 years. Research and new ideas helped. This can help improve other energy technologies ...

1 shows a white-light LED in action). It is possible to generate light in semiconductor materials (such as GaN or AlInGaP) by injecting electrons into the conduction band of the material and ...

The reason I’d hit that pothole had actually been because the light was too bright. The undirected, harsh white flooded my field of vision, creating a glare that blinded me and hid obstacles in ...