Patent ID: 8017960

Claim:
An infrared emitting diode usable as an infrared light source for both infrared and remote control communications, characterized in that it comprises: at least one p-type clad layer containing Al x Ga 1-x As of p type where 0.15≦x≦0.45; an active layer containing Al y Ga 1-y As of p type where 0≦y≦0.01; and at least one n-type clad layer containing Al z Ga 1-z As of n type where 0.15≦z≦0.45, wherein said active layer has a thickness of 2.8 to 6 μm, said active layer has an effective impurity formed of Ge and an impurity concentration of said active layer is 10 18 cm −3 or more, and said infrared emitting diode has an emission peak wavelength of 880 to 890 nm at room temperature.