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Variable range photodetector and method thereof

Patent image
ARL

A method of making and a photodetector comprising a substrate; a p-type or n-type layer; first and second region each having polarizations, a first interface therebetween, the magnitudes and directions of the first and second polarizations being such that a scalar projection of second polarization on the growth direction relative to the scalar projection of the first polarization projected onto the growth direction is sufficient to create a first interface charge; and a third region suitable for forming one of an n-metal or p-metal contact thereon having a third polarization, a second interface between the second and third regions, the third polarization having a scalar projection on the growth direction that, relative to scalar projection of the second polarization onto the growth direction, is sufficient to create a second interface charge; the first and second interface charges creating an electrostatic potential barrier to carriers defining a predetermined wavelength range.

Inventors: 
Shen, Paul; Rodak, Lee Ellen; Gallinat, Chad Stephen; Sampath, Anand Venktesh; Wraback, Michael
Patent Number: 
Technical domain: 
Materials and Coatings
FIle Date: 
2014-05-23
Grant Date: 
2016-06-28
Grant time: 
767 days
Grant time percentile rank: 
14
Claim count percentile rank: 
5
Citations percentile rank: 
1
'Cited by' percentile rank: 
1
Assignee: 
US ARMY