Springer Theses

Development of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy

Authors: Cabrera, Mario S.

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  •  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
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  • ISBN 978-3-030-54241-2
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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.

About the authors

Mario Cabrera received his PhD from the University of Rochester in 2020.

Table of contents (7 chapters)

Table of contents (7 chapters)

Buy this book

eBook $119.00
price for USA in USD
  • ISBN 978-3-030-54241-2
  • Digitally watermarked, DRM-free
  • Included format: PDF, EPUB
  • Immediate eBook download after purchase and usable on all devices
  • Bulk discounts available
Hardcover $159.99
price for USA in USD
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Bibliographic Information

Bibliographic Information
Book Title
Development of 15 Micron Cutoff Wavelength HgCdTe Detector Arrays for Astronomy
Authors
Series Title
Springer Theses
Copyright
2020
Publisher
Springer International Publishing
Copyright Holder
Springer Nature Switzerland AG
eBook ISBN
978-3-030-54241-2
DOI
10.1007/978-3-030-54241-2
Hardcover ISBN
978-3-030-54240-5
Series ISSN
2190-5053
Edition Number
1
Number of Pages
XVII, 121
Number of Illustrations
27 b/w illustrations, 44 illustrations in colour
Topics