A polarization-insensitive fishnet/spacer/mirror plasmonic absorber for hot electron photodetection application

Zhiqiang Yang; Kang Du; Wending Zhang; Soojin Chua; Ting Mei

doi:10.3788/COL202018.052402

A polarization-insensitive fishnet/spacer/mirror plasmonic absorber for hot electron photodetection application

Zhiqiang Yang
, Kang Du
, Wending Zhang
, Soojin Chua
, Ting Mei

物理科学与技术学院

Northwestern Polytechnical University Xian
National University of Singapore
Massachusetts Institute of Technology

科研成果: 期刊稿件 › 文章 › 同行评审

3 引用（Scopus）

摘要

A polarization-insensitive plasmonic absorber is designed consisting of Au fishnet structures on a TiO₂ spacer/Ag mirror. The fishnet structures excite localized surface plasmon and generate hot electrons from the absorbed photons, while the TiO₂ layer induces Fabry-Perot resonance, and the Ag mirror acts as a back reflector. Through optimizing the TiO₂ layer thickness, numerical simulation shows that 97% of the incident light is absorbed in the Au layer. The maximum responsivity and external quantum efficiency of the device can approach 5 mA/W and ∼1%, respectively, at the wavelength of 700 nm.

源语言	英语
期刊论文编号	052402
期刊	Chinese Optics Letters
卷	18
期	5
DOI	https://doi.org/10.3788/COL202018.052402
出版状态	已出版 - 10 5月 2020

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title = "A polarization-insensitive fishnet/spacer/mirror plasmonic absorber for hot electron photodetection application",

abstract = "A polarization-insensitive plasmonic absorber is designed consisting of Au fishnet structures on a TiO2 spacer/Ag mirror. The fishnet structures excite localized surface plasmon and generate hot electrons from the absorbed photons, while the TiO2 layer induces Fabry-Perot resonance, and the Ag mirror acts as a back reflector. Through optimizing the TiO2 layer thickness, numerical simulation shows that 97\% of the incident light is absorbed in the Au layer. The maximum responsivity and external quantum efficiency of the device can approach 5 mA/W and ∼1\%, respectively, at the wavelength of 700 nm.",

keywords = "Fabry-Perot resonance, Internal photoemission, Plasmonic absorber, Surface plasmon",

author = "Zhiqiang Yang and Kang Du and Wending Zhang and Soojin Chua and Ting Mei",

note = "Publisher Copyright: {\textcopyright} 2020 Chinese Optics Letters.",

year = "2020",

month = may,

day = "10",

doi = "10.3788/COL202018.052402",

language = "英语",

volume = "18",

journal = "Chinese Optics Letters",

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TY - JOUR

T1 - A polarization-insensitive fishnet/spacer/mirror plasmonic absorber for hot electron photodetection application

AU - Yang, Zhiqiang

AU - Du, Kang

AU - Zhang, Wending

AU - Chua, Soojin

AU - Mei, Ting

PY - 2020/5/10

Y1 - 2020/5/10

N2 - A polarization-insensitive plasmonic absorber is designed consisting of Au fishnet structures on a TiO2 spacer/Ag mirror. The fishnet structures excite localized surface plasmon and generate hot electrons from the absorbed photons, while the TiO2 layer induces Fabry-Perot resonance, and the Ag mirror acts as a back reflector. Through optimizing the TiO2 layer thickness, numerical simulation shows that 97% of the incident light is absorbed in the Au layer. The maximum responsivity and external quantum efficiency of the device can approach 5 mA/W and ∼1%, respectively, at the wavelength of 700 nm.

AB - A polarization-insensitive plasmonic absorber is designed consisting of Au fishnet structures on a TiO2 spacer/Ag mirror. The fishnet structures excite localized surface plasmon and generate hot electrons from the absorbed photons, while the TiO2 layer induces Fabry-Perot resonance, and the Ag mirror acts as a back reflector. Through optimizing the TiO2 layer thickness, numerical simulation shows that 97% of the incident light is absorbed in the Au layer. The maximum responsivity and external quantum efficiency of the device can approach 5 mA/W and ∼1%, respectively, at the wavelength of 700 nm.

KW - Fabry-Perot resonance

KW - Internal photoemission

KW - Plasmonic absorber

KW - Surface plasmon

UR - https://www.scopus.com/pages/publications/85087331064

U2 - 10.3788/COL202018.052402

DO - 10.3788/COL202018.052402

M3 - 文章

AN - SCOPUS:85087331064

SN - 1671-7694

VL - 18

JO - Chinese Optics Letters

JF - Chinese Optics Letters

IS - 5

M1 - 052402

ER -

A polarization-insensitive fishnet/spacer/mirror plasmonic absorber for hot electron photodetection application

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