Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction

MXene, a new advanced two-dimensional material, has attracted great attention in energy storage, transparent electrodes, and electromagnetic shielding due to its high conductivity, high specific surface area, and hydrophilic surface. Given the solution-processability and tunable work function, MXene...

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Autores principales:	Yang Changming, Qin Shiyu, Zuo Yan, Shi Yang, Bie Tong, Shao Ming, Yu Yu
Formato:	article
Lenguaje:	EN
Publicado:	De Gruyter 2021
Materias:	2d materials mxene ti3c2tx/p-si waveguide schottky photodetectors Physics QC1-999
Acceso en línea:	https://doaj.org/article/4a79393d8f5443b0805ebf769020a014
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id	oai:doaj.org-article:4a79393d8f5443b0805ebf769020a014
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spelling	oai:doaj.org-article:4a79393d8f5443b0805ebf769020a0142021-12-05T14:10:56ZWaveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction2192-861410.1515/nanoph-2021-0415https://doaj.org/article/4a79393d8f5443b0805ebf769020a0142021-10-01T00:00:00Zhttps://doi.org/10.1515/nanoph-2021-0415https://doaj.org/toc/2192-8614MXene, a new advanced two-dimensional material, has attracted great attention in energy storage, transparent electrodes, and electromagnetic shielding due to its high conductivity, high specific surface area, and hydrophilic surface. Given the solution-processability and tunable work function, MXene also holds great potential for wide-range photodetection and integrated optics. Here, we demonstrate a waveguide integrated Schottky photodetector based on Ti3C2Tx/Si van der Waals heterojunction. Specifically, the barrier of the Schottky photodetector can be adjusted by using simple surface treatment. The work function of the Ti3C2Tx is reduced from 4.66 to 4.43 eV after vacuum annealing, and the barrier height of Ti3C2Tx/p-Si Schottky junction is correspondingly increased from 0.64 to 0.72 eV, leading to 215 nm working wavelength blue-shift. The photodetector exhibits working wavelength tunability in short-wavelength infrared regions due to the engineered Schottky barrier. To our best knowledge, this is the first demonstration of utilizing MXene in waveguide-integrated photodetection, showing the potential applications for various scenarios thanks to the flexible working wavelength range induced by the tunable barrier.Yang ChangmingQin ShiyuZuo YanShi YangBie TongShao MingYu YuDe Gruyterarticle2d materialsmxeneti3c2tx/p-siwaveguide schottky photodetectorsPhysicsQC1-999ENNanophotonics, Vol 10, Iss 16, Pp 4133-4139 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	2d materials mxene ti3c2tx/p-si waveguide schottky photodetectors Physics QC1-999
spellingShingle	2d materials mxene ti3c2tx/p-si waveguide schottky photodetectors Physics QC1-999 Yang Changming Qin Shiyu Zuo Yan Shi Yang Bie Tong Shao Ming Yu Yu Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
description	MXene, a new advanced two-dimensional material, has attracted great attention in energy storage, transparent electrodes, and electromagnetic shielding due to its high conductivity, high specific surface area, and hydrophilic surface. Given the solution-processability and tunable work function, MXene also holds great potential for wide-range photodetection and integrated optics. Here, we demonstrate a waveguide integrated Schottky photodetector based on Ti3C2Tx/Si van der Waals heterojunction. Specifically, the barrier of the Schottky photodetector can be adjusted by using simple surface treatment. The work function of the Ti3C2Tx is reduced from 4.66 to 4.43 eV after vacuum annealing, and the barrier height of Ti3C2Tx/p-Si Schottky junction is correspondingly increased from 0.64 to 0.72 eV, leading to 215 nm working wavelength blue-shift. The photodetector exhibits working wavelength tunability in short-wavelength infrared regions due to the engineered Schottky barrier. To our best knowledge, this is the first demonstration of utilizing MXene in waveguide-integrated photodetection, showing the potential applications for various scenarios thanks to the flexible working wavelength range induced by the tunable barrier.
format	article
author	Yang Changming Qin Shiyu Zuo Yan Shi Yang Bie Tong Shao Ming Yu Yu
author_facet	Yang Changming Qin Shiyu Zuo Yan Shi Yang Bie Tong Shao Ming Yu Yu
author_sort	Yang Changming
title	Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
title_short	Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
title_full	Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
title_fullStr	Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
title_full_unstemmed	Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction
title_sort	waveguide schottky photodetector with tunable barrier based on ti3c2tx/p-si van der waals heterojunction
publisher	De Gruyter
publishDate	2021
url	https://doaj.org/article/4a79393d8f5443b0805ebf769020a014
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Waveguide Schottky photodetector with tunable barrier based on Ti3C2Tx/p-Si van der Waals heterojunction

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