Status of the development of 2k2 IR FPAs for astronomy and space in Europe

Badano, G.; Cervera, C.; Gravrand, O.; Fièque, B.; Lamoure, Adrien; Boulade, O.; Mouzali, Salima

doi:10.1117/12.2323496

Cited by 2 publications

(1 citation statement)

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“…23 There have been several studies in the past few years on both theoretical and experimental aspects of SWIR infrared photodetectors based on the HgCdTe alloy employing p-onn device structure. 3,10,[24][25][26][27][28][29][30][31] However, since these detectors were designed to be used as individual small-area pixels in an imaging array, they were not designed for ultra-high QE application. In this paper, we present the design rules which allow SWIR photodetectors operating in the eSWIR spectral range to achieve their maximum quantum efficiency.…”

Section: Introductionmentioning

confidence: 99%

Design Principles for High QE HgCdTe Infrared Photodetectors for eSWIR Applications

Akhavan

Umana‐Membreno

et al. 2022

J. Electron. Mater.

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In this paper, we study the limiting mechanisms and design criteria of HgCdTe photodetectors for extended shortwave infrared applications with ultra-high quantum efficiency (QE) in both n-on-p and p-on-n technologies. Numerical and analytical models are employed in order to study the possibility of achieving ultra-high QE eSWIR detectors for the operational wavelengths of approximately 2.0 μm, and our study shows that by proper design of absorber layer and doping density, such a detector can be engineered. Furthermore, we demonstrate that the Shockley–Read–Hall (SRH) lifetime, absorber layer doping density and absorber layer thickness all have an impact on the quantum efficiency whether the detector is used as a small-area pixel element in a focal plane array or as a discrete large-area detector for sensing applications.

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Section: Introductionmentioning

confidence: 99%

Design Principles for High QE HgCdTe Infrared Photodetectors for eSWIR Applications

Akhavan

Umana‐Membreno

et al. 2022

J. Electron. Mater.

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Opaque pixel mask with a broadband absorbing metasurface: application to infrared detectors

Perchec

Badano

2022

Appl. Opt.

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We present an imager architecture comprising dark and active pixels allowing the simultaneous measurement of photonic and dark current, which is of particular interest for low-photon-flux astronomical applications. The principle of operation relies on both the total opacity of a thin metallic screen of sufficient area and the anti-reflective properties of well-designed resonant metal–dielectric gratings made on the same screen. The concept is exemplified in the context of cooled HgCdTe hybrid detectors, at short- and long-wave infrared ranges.

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Status of the development of 2k2 IR FPAs for astronomy and space in Europe

Cited by 2 publications

References 1 publication

Design Principles for High QE HgCdTe Infrared Photodetectors for eSWIR Applications

Design Principles for High QE HgCdTe Infrared Photodetectors for eSWIR Applications

Opaque pixel mask with a broadband absorbing metasurface: application to infrared detectors

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