Electromagnetically carrier depleted IR photodetector

Zoran G. Djuric; Jozef Piotrowski

doi:10.1117/12.48766

1 December 1991 Electromagnetically carrier depleted IR photodetector

Zoran G. Djuric, Jozef Piotrowski

Proceedings Volume 1540, Infrared Technology XVII; (1991) https://doi.org/10.1117/12.48766
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

A method is presented for the thermal noise reduction in a near room-temperature intrinsic IR photodetector. The method is based on suppression of the Auger generation-recombination processes using the Electro-Magnetic Carrier Depletion (EMCD) of a narrow gap semiconductor. The device is a lightly doped narrow gap semiconductor flake with a high backside surface recombination velocity, supplied with electrical contact and placed in a magnetic field. Due to action of the Lorentz force, most of the device depletes in charge carriers, resulting in suppression of the Auger generation and recombination processes. As a result, the I-V characteristic becomes nonlinear, exhibiting regions of high positive and negative resistance. The thermal noise can be dramatically reduced, leading to a substantial improvement of performance. The ultimate detectivity may be determined either by the background radiation or by the Shockley-Read generation, in dependence on the ratio of the background photon flux to the recombination center concentration. The near-BLIP performance is predicted for 10.6 micrometers (Hg,Cd)Te devices, prepared from high quality materials and operated at 225 - 250 K.

Citation Download Citation

Zoran G. Djuric and Jozef Piotrowski "Electromagnetically carrier depleted IR photodetector", Proc. SPIE 1540, Infrared Technology XVII, (1 December 1991); https://doi.org/10.1117/12.48766

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available