Empirical trends of minority carrier recombination lifetime vs proton radiation for rad-hard IR detector materials

Geoffrey D. Jenkins; Christian P. Morath; Vincent M. Cowan

doi:10.1117/12.2188695

1 September 2015 Empirical trends of minority carrier recombination lifetime vs proton radiation for rad-hard IR detector materials

Geoffrey D. Jenkins, Christian P. Morath, Vincent M. Cowan

Author Affiliations +

Proceedings Volume 9616, Nanophotonics and Macrophotonics for Space Environments IX; 96160G (2015) https://doi.org/10.1117/12.2188695
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

The continuous effort to improve space-based infrared (IR) detectors has led to a search for greater fundamental understanding of radiation damage phenomena effects on key material properties. The material parameter of interest in this paper is the minority carrier recombination lifetime (MCRL), which is directly related to detector performance and can be empirically determined. As radiation damage is incurred upon a detector structure, the MCRL can be significantly affected, and tracking this in a step-wise, in-situ fashion at a radiation source can reveal rates of defect introduction. This has been accomplished by the development of a portable MCRL measurement system employing time resolved photoluminescence (TRPL) while maintaining operational temperatures. Using this methodology is more insightful than the so-called ‘bag tests’ (i.e. characterization before and after a single 100krad dosage) due to complex parameter changes witnessed with annealing as temperatures change. In addition to the system description, MCRL data on IR detectors from its inaugural deployments at a proton radiation source are analyzed and reveal a linear relationship between inverse MCRL and proton fluence.

Citation Download Citation

Geoffrey D. Jenkins, Christian P. Morath, and Vincent M. Cowan "Empirical trends of minority carrier recombination lifetime vs proton radiation for rad-hard IR detector materials", Proc. SPIE 9616, Nanophotonics and Macrophotonics for Space Environments IX, 96160G (1 September 2015); https://doi.org/10.1117/12.2188695

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