Overview
- Nominated as an outstanding PhD thesis by the University of Rochester
- Enhances understanding of quantum tunneling dark currents in detector arrays
- Describes significant advances in the development of detectors for low-background astronomy
Part of the book series: Springer Theses (Springer Theses)
Access this book
Tax calculation will be finalised at checkout
Other ways to access
Table of contents (7 chapters)
Keywords
About this book
This thesis describes advances in the understanding of HgCdTe detectors. While long wave (15 μm) infrared detectors HgCdTe detectors have been developed for military use under high background irradiance, these arrays had not previously been developed for astronomical use where the background irradiance is a billion times smaller. The main pitfall in developing such arrays for astronomy is the pixel dark current which plagues long wave HgCdTe. The author details work on the success of shorter wavelength development at Teledyne Imaging Sensors, carefully modeling the dark current–reverse bias voltage curves of their 10 μm devices at a temperature of 30K, as well as the dark current–temperature curves at several reverse biases, including 250 mV. By projecting first to 13 and then 15 μm HgCdTe growth, values of fundamental properties of the material that would minimize tunneling dark currents were determined through careful modeling of the dark current-reverse bias voltage curves, as well as the dark current-temperature curves. This analysis was borne out in the 13 μm parts produced by Teledyne, and then further honed to produce the necessary parameters for the 15 μm growth. The resulting 13 μm arrays are being considered by a number of ground-based astronomy research groups.
Authors and Affiliations
About the author
Bibliographic Information
Book Title: Development of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy
Authors: Mario Cabrera
Series Title: Springer Theses
DOI: https://doi.org/10.1007/978-3-030-54241-2
Publisher: Springer Cham
eBook Packages: Physics and Astronomy, Physics and Astronomy (R0)
Copyright Information: Springer Nature Switzerland AG 2020
Hardcover ISBN: 978-3-030-54240-5Published: 18 September 2020
Softcover ISBN: 978-3-030-54243-6Published: 19 September 2021
eBook ISBN: 978-3-030-54241-2Published: 17 September 2020
Series ISSN: 2190-5053
Series E-ISSN: 2190-5061
Edition Number: 1
Number of Pages: XVII, 121
Number of Illustrations: 27 b/w illustrations, 44 illustrations in colour
Topics: Astronomy, Observations and Techniques, Measurement Science and Instrumentation, Materials Science, general, Semiconductors