Multi-bandgap single dual function light emitting/detecting diod

Details Multi-bandgap single dual function light emitting/detecting diod Multi-bandgap single dual function light emitting/detecting diod

1990-04-05

1992-03-17

James, Andrew J.

357 16, 357 20, 357 30, H01L 3112, H01L 3116, H01L 29161

Patent

active

050972995

ABSTRACT:
The invention relates to a semiconductor diode capable of performing the dual functions of emission and detection of optical signals. The diode can be used in a bidirectional optical communication link alternating between transmitting and receiving optical signals. In particular, the structure is of a light emitting diode for emission and a photodiode for detection. The invention is a semiconductor p-n junction single heterostructure diode which can operate efficiently as a light emitting diode (LED) when a forward bias voltage is applied and as a light detecting photodiode when a zero or a small reverse bias voltage is applied.

REFERENCES:
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patent: 4773074 (1988-09-01), Hunsperger et al.
patent: 4775881 (1988-10-01), Ploog et al.
patent: 4790635 (1988-12-01), Apsley
patent: 4910571 (1990-03-01), Kasahara et al.
patent: 4948960 (1990-08-01), Simms et al.
patent: 4989051 (1991-01-01), Whitehead et al.

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