Low noise read-type diode

Details Low noise read-type diode Low noise read-type diode

H - Electricity

01

L

356/53

H01L 29/864 (2006.01) H01L 29/36 (2006.01)

Patent

CA 1067623

LOW NOISE READ-TYPE DIODE Abstract A Read-type avalanche diode having a low noise measure and capable of attaining output signal powers of one watt or more. An effective injection current is defined as the con- duction current in the avalanche zone in the absence of avalanche multiplication including therein any tunneling current. The noise measure of the diode is minimized by in- creasing the defined effective injection current with disclosed techniques. In one embodiment, the effective injection current is increased by the presence of traps located in the avalanche region. In another embodiment, a Schottky barrier contact having a low work function is provided. Surface states of the avalanche region are also varied to produce the desired increase. Increased effective injection current may also be produced in a device with preferred heat flow properties. The noise perform- ance of both oscillator and amplifier circuits is improved with the invention.

267420

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