Monolithically integrated CdTe/InSb visible/midwave-infrared two-color photodetectors

Zhao Yu He; Calli M. Campbell; Maxwell B. Lassise; Zhi Yuan Lin; Jacob J. Becker; Yong Hang Zhang

doi:10.1016/j.infrared.2018.11.031

Monolithically integrated CdTe/InSb visible/midwave-infrared two-color photodetectors

Zhao Yu He, Calli M. Campbell, Maxwell B. Lassise, Zhi Yuan Lin, Jacob J. Becker, Yong Hang Zhang

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

This paper reports on the demonstration of two-terminal, two-color (visible/midwave-infrared, MWIR) photodetectors (2CPDs) consisting of monolithically-integrated CdTe nBn and InSb PN sub-detectors connected by an n-CdTe/p-InSb heterovalent tunnel junction grown on lattice-matched InSb substrates. The 2CPD can be switched between MWIR (1.5–5.5 μm with a peak responsivity of 0.75 A/W at 77 K) and visible (350–780 nm with a peak responsivity of 0.3 A/W) detection bands by applying different optical and electrical biases. Band rejection ratios of 18 dB and 52 dB, and spectral cross-talks of 40 dB and 31 dB are achieved for the visible and the MWIR bands, respectively. This 2CPD can be potentially used for visible/MWIR two-color focal plane arrays with optimal fill-factors and zero spatial offset between the visible and MWIR imaging channels.

Original language	English (US)
Pages (from-to)	58-62
Number of pages	5
Journal	Infrared Physics and Technology
Volume	97
DOIs	https://doi.org/10.1016/j.infrared.2018.11.031
State	Published - Mar 2019

Keywords

CdTe
InSb
MWIR
Multi-color
Photodetector
Visible

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics

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10.1016/j.infrared.2018.11.031

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@article{8d539dee26c64a86a60414a7b761ee3e,

title = "Monolithically integrated CdTe/InSb visible/midwave-infrared two-color photodetectors",

abstract = "This paper reports on the demonstration of two-terminal, two-color (visible/midwave-infrared, MWIR) photodetectors (2CPDs) consisting of monolithically-integrated CdTe nBn and InSb PN sub-detectors connected by an n-CdTe/p-InSb heterovalent tunnel junction grown on lattice-matched InSb substrates. The 2CPD can be switched between MWIR (1.5–5.5 μm with a peak responsivity of 0.75 A/W at 77 K) and visible (350–780 nm with a peak responsivity of 0.3 A/W) detection bands by applying different optical and electrical biases. Band rejection ratios of 18 dB and 52 dB, and spectral cross-talks of 40 dB and 31 dB are achieved for the visible and the MWIR bands, respectively. This 2CPD can be potentially used for visible/MWIR two-color focal plane arrays with optimal fill-factors and zero spatial offset between the visible and MWIR imaging channels.",

keywords = "CdTe, InSb, MWIR, Multi-color, Photodetector, Visible",

author = "He, {Zhao Yu} and Campbell, {Calli M.} and Lassise, {Maxwell B.} and Lin, {Zhi Yuan} and Becker, {Jacob J.} and Zhang, {Yong Hang}",

note = "Funding Information: This work was supported by ARO MURI grant W911NF-10-1-0524 and AFOSR Grants FA9550-10-1-0129 and FA9550-15-1-0196 . The authors gratefully acknowledge Dr. Mathieu Boccard and Dr. Zachary Holman for depositing the α-Si:H and ITO layers, and thankfully acknowledge the use of facilities within the ASU NanoFab supported in part by NSF program NNCI-ECCS-1542160. Funding Information: This work was supported by ARO MURI grant W911NF-10-1-0524 and AFOSR Grants FA9550-10-1-0129 and FA9550-15-1-0196. The authors gratefully acknowledge Dr. Mathieu Boccard and Dr. Zachary Holman for depositing the α-Si:H and ITO layers, and thankfully acknowledge the use of facilities within the ASU NanoFab supported in part by NSF program NNCI-ECCS-1542160. Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2019",

month = mar,

doi = "10.1016/j.infrared.2018.11.031",

language = "English (US)",

volume = "97",

pages = "58--62",

journal = "Infrared Physics and Technology",

issn = "1350-4495",

publisher = "Elsevier",

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TY - JOUR

T1 - Monolithically integrated CdTe/InSb visible/midwave-infrared two-color photodetectors

AU - He, Zhao Yu

AU - Campbell, Calli M.

AU - Lassise, Maxwell B.

AU - Lin, Zhi Yuan

AU - Becker, Jacob J.

AU - Zhang, Yong Hang

N1 - Funding Information: This work was supported by ARO MURI grant W911NF-10-1-0524 and AFOSR Grants FA9550-10-1-0129 and FA9550-15-1-0196 . The authors gratefully acknowledge Dr. Mathieu Boccard and Dr. Zachary Holman for depositing the α-Si:H and ITO layers, and thankfully acknowledge the use of facilities within the ASU NanoFab supported in part by NSF program NNCI-ECCS-1542160. Funding Information: This work was supported by ARO MURI grant W911NF-10-1-0524 and AFOSR Grants FA9550-10-1-0129 and FA9550-15-1-0196. The authors gratefully acknowledge Dr. Mathieu Boccard and Dr. Zachary Holman for depositing the α-Si:H and ITO layers, and thankfully acknowledge the use of facilities within the ASU NanoFab supported in part by NSF program NNCI-ECCS-1542160. Publisher Copyright: © 2018 Elsevier B.V.

PY - 2019/3

Y1 - 2019/3

N2 - This paper reports on the demonstration of two-terminal, two-color (visible/midwave-infrared, MWIR) photodetectors (2CPDs) consisting of monolithically-integrated CdTe nBn and InSb PN sub-detectors connected by an n-CdTe/p-InSb heterovalent tunnel junction grown on lattice-matched InSb substrates. The 2CPD can be switched between MWIR (1.5–5.5 μm with a peak responsivity of 0.75 A/W at 77 K) and visible (350–780 nm with a peak responsivity of 0.3 A/W) detection bands by applying different optical and electrical biases. Band rejection ratios of 18 dB and 52 dB, and spectral cross-talks of 40 dB and 31 dB are achieved for the visible and the MWIR bands, respectively. This 2CPD can be potentially used for visible/MWIR two-color focal plane arrays with optimal fill-factors and zero spatial offset between the visible and MWIR imaging channels.

AB - This paper reports on the demonstration of two-terminal, two-color (visible/midwave-infrared, MWIR) photodetectors (2CPDs) consisting of monolithically-integrated CdTe nBn and InSb PN sub-detectors connected by an n-CdTe/p-InSb heterovalent tunnel junction grown on lattice-matched InSb substrates. The 2CPD can be switched between MWIR (1.5–5.5 μm with a peak responsivity of 0.75 A/W at 77 K) and visible (350–780 nm with a peak responsivity of 0.3 A/W) detection bands by applying different optical and electrical biases. Band rejection ratios of 18 dB and 52 dB, and spectral cross-talks of 40 dB and 31 dB are achieved for the visible and the MWIR bands, respectively. This 2CPD can be potentially used for visible/MWIR two-color focal plane arrays with optimal fill-factors and zero spatial offset between the visible and MWIR imaging channels.

KW - CdTe

KW - InSb

KW - MWIR

KW - Multi-color

KW - Photodetector

KW - Visible

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U2 - 10.1016/j.infrared.2018.11.031

DO - 10.1016/j.infrared.2018.11.031

M3 - Article

AN - SCOPUS:85058660334

SN - 1350-4495

VL - 97

SP - 58

EP - 62

JO - Infrared Physics and Technology

JF - Infrared Physics and Technology

ER -

Monolithically integrated CdTe/InSb visible/midwave-infrared two-color photodetectors

Abstract

Keywords

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