Conventional LEDs are made from a variety of inorganic semiconductor materials, producing the following colors:
* aluminum gallium arsenide (AlGaAs) - red and infrared
* aluminum gallium phosphide (AlGaP) - green
* aluminum gallium indium phosphide (AlGaInP) - high-brightness orange-red, orange, yellow, and green
* gallium arsenide phosphide (GaAsP) - red, orange-red, orange, and yellow
* gallium phosphide (GaP) - red, yellow and green
* gallium nitride (GaN) - green, pure green (or emerald green), and blue
* indium gallium nitride (InGaN) - near ultraviolet, bluish-green and blue
* silicon carbide (SiC) as substrate - blue
* silicon (Si) as substrate - blue (under development)
* sapphire (Al2O3) as substrate - blue
* zinc selenide (ZnSe) - blue
* diamond (C) - ultraviolet
* aluminum nitride (AlN), aluminum gallium nitride (AlGaN) - near to far ultraviolet