Give an example each of a semiconductor material that can produce red, green, and bkue LEDs
2007-09-10 06:41:16 · 2 answers · asked by sh 1 in Science & Mathematics ➔ Engineering
LED diodes?
Give an example each of a semiconductor material that can produce red, green, and bkue LEDs
http://en.wikipedia.org/wiki/Led#Multi-touch_sensing
red Aluminium gallium arsenide (AlGaAs) . Gallium arsenide phosphide (GaAsP), Gallium phosphide (GaP)
green Aluminium gallium phosphide (AlGaP) , Aluminium gallium indium phosphide (AlGaInP), Gallium phosphide (GaP), Gallium nitride (GaN)
blue Gallium nitride (GaN), Indium gallium nitride (InGaN), Silicon carbide (SiC) as substrate — blue
Silicon (Si) as substrate — blue (under development)
Sapphire (Al2O3) as substrate — blue
Zinc selenide (ZnSe) — blue
2007-09-10 07:03:55 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Red: Aluminum Gallium Arsinide
Green: Aluminum Gallium Phosphide
Blue: Indium Gallium Nitride (the latest bright ones)
Zinc Selenide (the first blue LED)
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2007-09-10 14:04:01 · answer #2 · answered by tlbs101 7 · 0⤊ 0⤋