Advances in multiple-quantum-well IR detectors

Walter L. Bloss; Michael J. O'Loughlin; Mary Rosenbluth

doi:10.1117/12.49314

1 November 1991 Advances in multiple-quantum-well IR detectors

Walter L. Bloss, Michael J. O'Loughlin, Mary Rosenbluth

Proceedings Volume 1541, Infrared Sensors: Detectors, Electronics, and Signal Processing; (1991) https://doi.org/10.1117/12.49314
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The performance of GaAs/AlGaAs multiple quantum well long-wavelength infrared detectors is evaluated for potential applications in focal plane arrays. A number of GaAs/AlGaAs quantum well infrared detectors with absorption between 7 to 12 micrometers have been fabricated and characterized. In these samples, the quantum well width and barrier height were held approximately constant, while the AlGaAs barrier thickness was varied from 300 to 500 angstrom. These detectors were characterized by FTIR absorption, dark current, responsivity, spectral noise density, and thermal activation energy measurements at temperatures ranging from 6 to 80 K. A maximum detectivity of 4 X 1013 cm(root)Hz/W at 6 K is obtained at (lambda) equals 8.4 micrometers for the 500 angstrom barrier sample.

Citation Download Citation

Walter L. Bloss, Michael J. O'Loughlin, and Mary Rosenbluth "Advances in multiple-quantum-well IR detectors", Proc. SPIE 1541, Infrared Sensors: Detectors, Electronics, and Signal Processing, (1 November 1991); https://doi.org/10.1117/12.49314

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