Plasmon-enhanced HgTe colloidal quantum dot infrared photodetectors

Yanyan Qiu; Naiquan Yan; Haifeng Yao; Menglu Chen

doi:10.1016/j.infrared.2023.104980

Plasmon-enhanced HgTe colloidal quantum dot infrared photodetectors

Yanyan Qiu, Naiquan Yan, Haifeng Yao, Menglu Chen^*

^*Corresponding author for this work

School of Optics and Photonics

Beijing Institute of Technology

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

3 Citations (Scopus)

Abstract

Surface plasmon resonances based on metal nanoparticles (MNPs) can intensively enhance the electric field strength and capture light in the near-field region, thus greatly improving the performance of photodetectors. Here, we investigate plasmon-enhanced HgTe colloidal quantum dot (CQD) short-wave infrared (SWIR) photodetectors with Ag NPs embedded. Thanks to Ag NPs’ ability to trap the incident light, the light-to-dark current ratio of our enhanced CQD photodetectors with 10 nm Ag NPs is significantly increased by a factor of 5.7. Accordingly, the specific detectivity and responsivity are also enhanced, achieving about 8.92 × 10¹⁰ Jones and above 2 AW⁻¹ under 2 V bias, respectively.

Original language	English
Article number	104980
Journal	Infrared Physics and Technology
Volume	135
DOIs	https://doi.org/10.1016/j.infrared.2023.104980
Publication status	Published - Dec 2023

Keywords

Colloidal quantum dot
HgTe
Plasmon-enhanced
Short-wave infrared

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10.1016/j.infrared.2023.104980

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title = "Plasmon-enhanced HgTe colloidal quantum dot infrared photodetectors",

abstract = "Surface plasmon resonances based on metal nanoparticles (MNPs) can intensively enhance the electric field strength and capture light in the near-field region, thus greatly improving the performance of photodetectors. Here, we investigate plasmon-enhanced HgTe colloidal quantum dot (CQD) short-wave infrared (SWIR) photodetectors with Ag NPs embedded. Thanks to Ag NPs{\textquoteright} ability to trap the incident light, the light-to-dark current ratio of our enhanced CQD photodetectors with 10 nm Ag NPs is significantly increased by a factor of 5.7. Accordingly, the specific detectivity and responsivity are also enhanced, achieving about 8.92 × 1010 Jones and above 2 AW−1 under 2 V bias, respectively.",

keywords = "Colloidal quantum dot, HgTe, Plasmon-enhanced, Short-wave infrared",

author = "Yanyan Qiu and Naiquan Yan and Haifeng Yao and Menglu Chen",

note = "Publisher Copyright: {\textcopyright} 2023 Elsevier B.V.",

year = "2023",

month = dec,

doi = "10.1016/j.infrared.2023.104980",

language = "English",

volume = "135",

journal = "Infrared Physics and Technology",

issn = "1350-4495",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Plasmon-enhanced HgTe colloidal quantum dot infrared photodetectors

AU - Qiu, Yanyan

AU - Yan, Naiquan

AU - Yao, Haifeng

AU - Chen, Menglu

PY - 2023/12

Y1 - 2023/12

N2 - Surface plasmon resonances based on metal nanoparticles (MNPs) can intensively enhance the electric field strength and capture light in the near-field region, thus greatly improving the performance of photodetectors. Here, we investigate plasmon-enhanced HgTe colloidal quantum dot (CQD) short-wave infrared (SWIR) photodetectors with Ag NPs embedded. Thanks to Ag NPs’ ability to trap the incident light, the light-to-dark current ratio of our enhanced CQD photodetectors with 10 nm Ag NPs is significantly increased by a factor of 5.7. Accordingly, the specific detectivity and responsivity are also enhanced, achieving about 8.92 × 1010 Jones and above 2 AW−1 under 2 V bias, respectively.

AB - Surface plasmon resonances based on metal nanoparticles (MNPs) can intensively enhance the electric field strength and capture light in the near-field region, thus greatly improving the performance of photodetectors. Here, we investigate plasmon-enhanced HgTe colloidal quantum dot (CQD) short-wave infrared (SWIR) photodetectors with Ag NPs embedded. Thanks to Ag NPs’ ability to trap the incident light, the light-to-dark current ratio of our enhanced CQD photodetectors with 10 nm Ag NPs is significantly increased by a factor of 5.7. Accordingly, the specific detectivity and responsivity are also enhanced, achieving about 8.92 × 1010 Jones and above 2 AW−1 under 2 V bias, respectively.

KW - Colloidal quantum dot

KW - HgTe

KW - Plasmon-enhanced

KW - Short-wave infrared

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U2 - 10.1016/j.infrared.2023.104980

DO - 10.1016/j.infrared.2023.104980

M3 - Article

AN - SCOPUS:85176352096

SN - 1350-4495

VL - 135

JO - Infrared Physics and Technology

JF - Infrared Physics and Technology

M1 - 104980

ER -

Plasmon-enhanced HgTe colloidal quantum dot infrared photodetectors

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Keywords

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