PC detector passivation for high performance

Robert J. Martineau; Zhiqing Shi; Kelley Hu; Sridhar Manthripragada; F. A. Peters; Andre S. Burgess; John Godfrey; Danny J. Krebs

doi:10.1117/12.279000

23 October 1997 PC detector passivation for high performance

Robert J. Martineau, Zhiqing Shi, Kelley Hu, Sridhar Manthripragada, F. A. Peters, Andre S. Burgess, John Godfrey, Danny J. Krebs

Author Affiliations +

Proceedings Volume 3122, Infrared Spaceborne Remote Sensing V; (1997) https://doi.org/10.1117/12.279000
Event: Optical Science, Engineering and Instrumentation '97, 1997, San Diego, CA, United States

Abstract

Probably the most important factor in producing HgCdTe detectors of high performance is surface passivation. A good passivant for PC HgCdTe detectors accumulates the surface thereby reflecting minority carriers from surface imperfections and increasing minority carrier lifetime. A variety of passivants are known and used to various degrees, including sulfides, fluorides, oxides, and others. One of the problems with known passivants is that they tend to accumulate the surface too strongly, thus producing non-optimal results. We have developed a new passivation process which passivates the surface without strong accumulation. This results in detector resistance that is about 50%higher than that achieved with traditional KOH passivation, responsivities that are from 100 to 200% higher, and detectivities that are from 50to 100% higher for long wavelength devices. Materials and processing details used to achieve these results, as well as experimental data will be presented. Keyword: passivation, infrared, HgCdTe, detector

Citation Download Citation

Robert J. Martineau, Zhiqing Shi, Kelley Hu, Sridhar Manthripragada, F. A. Peters, Andre S. Burgess, John Godfrey, and Danny J. Krebs "PC detector passivation for high performance", Proc. SPIE 3122, Infrared Spaceborne Remote Sensing V, (23 October 1997); https://doi.org/10.1117/12.279000

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