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Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole
The resolution of InGaAs FPA detectors is degraded by the electrical crosstalk, which is especially severe in high–density FPAs. We propose a guard-hole structure to suppress the electrical crosstalk in a planar-type 640 × 512 15 μm InGaAs short wavelength infrared FPA detector. For comparison, the...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611042/ https://www.ncbi.nlm.nih.gov/pubmed/36296150 http://dx.doi.org/10.3390/mi13101797 |
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author | Zhang, Jiaxin Wang, Wei Ye, Haifeng Huang, Runyu Hou, Zepeng Liu, Chen Zhao, Weilin Li, Yunxue Ma, Xu Shi, Yanli |
author_facet | Zhang, Jiaxin Wang, Wei Ye, Haifeng Huang, Runyu Hou, Zepeng Liu, Chen Zhao, Weilin Li, Yunxue Ma, Xu Shi, Yanli |
author_sort | Zhang, Jiaxin |
collection | PubMed |
description | The resolution of InGaAs FPA detectors is degraded by the electrical crosstalk, which is especially severe in high–density FPAs. We propose a guard-hole structure to suppress the electrical crosstalk in a planar-type 640 × 512 15 μm InGaAs short wavelength infrared FPA detector. For comparison, the frequently used guard ring is also prepared according to the same processing. The calculation results show that the electrical crosstalk with a guard hole is suppressed from 13.4% to 4.5%, reducing by 66%, while the electrical crosstalk with a guard ring is suppressed to 0.4%. Furthermore, we discuss the effects of the guard ring and the guard hole on the dark current, quantum efficiency, and detectivity. Experimental results show the detector with a guard-hole structure has higher performance compared with the detector with a guard-ring structure, the dark current density is reduced by 60%, the QE is increased by 64.5%, and the detectivity is increased by 1.36 times, respectively. The guard-hole structure provides a novel suppression method for the electrical crosstalk of high-density InGaAs detectors. |
format | Online Article Text |
id | pubmed-9611042 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-96110422022-10-28 Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole Zhang, Jiaxin Wang, Wei Ye, Haifeng Huang, Runyu Hou, Zepeng Liu, Chen Zhao, Weilin Li, Yunxue Ma, Xu Shi, Yanli Micromachines (Basel) Article The resolution of InGaAs FPA detectors is degraded by the electrical crosstalk, which is especially severe in high–density FPAs. We propose a guard-hole structure to suppress the electrical crosstalk in a planar-type 640 × 512 15 μm InGaAs short wavelength infrared FPA detector. For comparison, the frequently used guard ring is also prepared according to the same processing. The calculation results show that the electrical crosstalk with a guard hole is suppressed from 13.4% to 4.5%, reducing by 66%, while the electrical crosstalk with a guard ring is suppressed to 0.4%. Furthermore, we discuss the effects of the guard ring and the guard hole on the dark current, quantum efficiency, and detectivity. Experimental results show the detector with a guard-hole structure has higher performance compared with the detector with a guard-ring structure, the dark current density is reduced by 60%, the QE is increased by 64.5%, and the detectivity is increased by 1.36 times, respectively. The guard-hole structure provides a novel suppression method for the electrical crosstalk of high-density InGaAs detectors. MDPI 2022-10-21 /pmc/articles/PMC9611042/ /pubmed/36296150 http://dx.doi.org/10.3390/mi13101797 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Zhang, Jiaxin Wang, Wei Ye, Haifeng Huang, Runyu Hou, Zepeng Liu, Chen Zhao, Weilin Li, Yunxue Ma, Xu Shi, Yanli Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title | Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title_full | Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title_fullStr | Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title_full_unstemmed | Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title_short | Suppression of the Electrical Crosstalk of Planar-Type High-Density InGaAs Detectors with a Guard Hole |
title_sort | suppression of the electrical crosstalk of planar-type high-density ingaas detectors with a guard hole |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9611042/ https://www.ncbi.nlm.nih.gov/pubmed/36296150 http://dx.doi.org/10.3390/mi13101797 |
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