Denuded zone field effect photoconductive detector

Details Denuded zone field effect photoconductive detector Denuded zone field effect photoconductive detector

1993-05-28

1995-11-14

Mintel, William

Active solid-state devices (e.g., transistors, solid-state diode

Heterojunction device

Light responsive structure

257188, 257191, 257442, H01L 2714, H01L 3100

Patent

active

054669537

ABSTRACT:
A compositionally graded HgCdTe radiation detector (10) is constructed to have a high purity "denuded zone" (Region 2) that is formed adjacent to a radiation absorbing region (Region 1). The compositional grading results in an internally generated electric field that is orthogonally disposed with respect to an externally generated electric field applied between contacts (16, 18). The internally generated electric field has the effect of injecting photogenerated minority charge carriers into the denuded zone, thereby reducing recombination with photogenerated majority charge carriers and increasing carrier lifetime. The detector further includes a wider bandgap surface passivation region (Region 3) that functions to trap, or "getter", impurities from the denuded zone and also to reduce surface recombination effects.

REFERENCES:
patent: 4357620 (1982-11-01), Wang et al.
patent: 4376659 (1983-03-01), Castro
patent: 4494133 (1985-01-01), Dean et al.
patent: 4885619 (1989-12-01), Kosai
patent: 4914495 (1990-04-01), Norton et al.
patent: 4956304 (1990-09-01), Cockrum et al.
patent: 4961098 (1990-10-01), Rosbeck et al.
patent: 5049952 (1991-09-01), Huang et al.
patent: 5051804 (1991-09-01), Morse et al.
patent: 5068524 (1991-11-01), Elliott et al.
patent: 5079610 (1992-01-01), Norton
patent: 5241196 (1993-08-01), Huang et al.

Affiliated with

Also associated with

Rating

Denuded zone field effect photoconductive detector does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Denuded zone field effect photoconductive detector, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Denuded zone field effect photoconductive detector will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1223076