Photocathodes

Details Photocathodes Photocathodes

1972-11-28

1978-06-20

Schafer, Richard E.

Electric lamp and discharge devices

With temperature modifier

For lead-in-seal or stem protection

313 94, 357 4, 357 16, 357 61, H01L 2714

Patent

active

040965112

ABSTRACT:
A transmission photodetector operable at wavelengths greater than 0.86 micrometers comprising a substrate transparent to the radiation to be detected, at least one epitaxial intermediate layer comprising (Ga.sub.1-x Al.sub.x).sub.1-y In.sub.y As and an epitaxial p-type Ga.sub.1-y In.sub.y As detector layer. The said one intermediate layer may be p-type. If desired a second epitaxial intermediate layer comprising (Ga.sub.1-x Al.sub.x).sub.1-z In.sub.z As may be provided between the substrate and the said one intermediate layer. In the foregoing 0<x.ltoreq.1, 0<y<1, and .ltoreq.0 z< y.

REFERENCES:
patent: 3350591 (1967-10-01), Asselt
patent: 3437890 (1969-04-01), Krohl et al.
patent: 3631303 (1971-12-01), Antypas
patent: 3696262 (1972-10-01), Antypas
patent: 3699401 (1972-10-01), Tietjfn
patent: 3765962 (1973-10-01), Poleshuk et al.

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