New insights into the ultimate performance of HgCdTe photodiodes

• Published in: Sensors and actuators. A. Physical. Vol. 339; p. 113511
• Main Authors: Kopytko, M., Rogalski, A.
• Format: Journal Article
• Language: English
• Published: Lausanne Elsevier B.V 01-06-2022; Elsevier BV
• Subjects: Background-limited performance; Chemical plants; Estimating techniques; Fully-depleted photodiodes; HgCdTe; Infrared detectors; Law 19; Mechanical properties; Mercury cadmium tellurides; Performance evaluation; Photodiodes; Tensile strength; Infrared detectors; HgCdTe; Fully-depleted photodiodes; Law 19; Background-limited performance
• ISSN: 0924-4247; 1873-3069
• DOI: 10.1016/j.sna.2022.113511

Proposal of a new metric, so-called “Law 19”, for estimation of the HgCdTe performance of photodiodes forces the verification of the ultimate properties of HgCdTe photodiodes, in particular in the long wavelength infrared (LWIR) spectral range. The present work addresses this challenge. Assuming a new benchmark, the HgCdTe photodiodes performance predictions are compared with “Rule 07” metric and confronted with the experimental data available in the literature. The main comparative efforts concern such photodiode parameters as dark currents and the R0A products.
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•The new “Law 19” benchmark forces a new look at the ultimate performance of HgCdTe photodiodes.•The predicted performance limits of “Law 19” indicates further possible development of HgCdTe photodiodes.•HgCdTe photodiode technology have made it possible to achieve sufficiently long carrier lifetimes.•The performance of HgCdTe photodiodes is determined by the influence of background radiation.