Photoconductivity Enhancement in Atomically Thin Molybdenum Disulfide through Local Doping from Confined Water

Jort D. Verbakel; Annelies Dekker; Harold J.W. Zandvliet; Pantelis Bampoulis

doi:10.1021/acs.jpcc.3c03442

Photoconductivity Enhancement in Atomically Thin Molybdenum Disulfide through Local Doping from Confined Water

Jort D. Verbakel, Annelies Dekker, Harold J.W. Zandvliet, Pantelis Bampoulis^*

^*Corresponding author for this work

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

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Abstract

Two-dimensional transition metal dichalcogenide (TMDC) materials have shown great potential for usage in opto-electronic devices, especially down to the regime of a few layers to a single layer. However, at these limits, the material properties can be strongly influenced by the interfaces. By using photoconductive atomic force microscopy, we show a local enhancement of photoconductivity at the nanoscale in bilayer molybdenum disulfide on mica, where water is confined between the TMDC and the substrate. We have found that the structural phase of the water influences the doping level and thus the tunneling barrier at the nanojunction. This leads to an increase in photocurrent and enhanced photopower generation.

Original language	English
Pages (from-to)	17171-17178
Number of pages	8
Journal	Journal of Physical Chemistry C
Volume	127
Issue number	34
DOIs	https://doi.org/10.1021/acs.jpcc.3c03442
Publication status	Published - 26 Jul 2023

Keywords

UT-Hybrid-D

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title = "Photoconductivity Enhancement in Atomically Thin Molybdenum Disulfide through Local Doping from Confined Water",

abstract = "Two-dimensional transition metal dichalcogenide (TMDC) materials have shown great potential for usage in opto-electronic devices, especially down to the regime of a few layers to a single layer. However, at these limits, the material properties can be strongly influenced by the interfaces. By using photoconductive atomic force microscopy, we show a local enhancement of photoconductivity at the nanoscale in bilayer molybdenum disulfide on mica, where water is confined between the TMDC and the substrate. We have found that the structural phase of the water influences the doping level and thus the tunneling barrier at the nanojunction. This leads to an increase in photocurrent and enhanced photopower generation.",

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author = "Verbakel, {Jort D.} and Annelies Dekker and Zandvliet, {Harold J.W.} and Pantelis Bampoulis",

note = "Funding Information: The authors thank S. Nair and F. Mugele of the Physics of Complex Fluids group at the University of Twente for instruction and machine time of the confocal Raman microscope. P.B. and H.J.W.Z. thank the Netherlands Organization for Scientific Research (NWO) for their financial support through a Veni grant and NWO Grant 16PR3237. Publisher Copyright: {\textcopyright} 2023 The Authors. Published by American Chemical Society.",

year = "2023",

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doi = "10.1021/acs.jpcc.3c03442",

language = "English",

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AU - Verbakel, Jort D.

AU - Dekker, Annelies

AU - Zandvliet, Harold J.W.

AU - Bampoulis, Pantelis

N1 - Funding Information: The authors thank S. Nair and F. Mugele of the Physics of Complex Fluids group at the University of Twente for instruction and machine time of the confocal Raman microscope. P.B. and H.J.W.Z. thank the Netherlands Organization for Scientific Research (NWO) for their financial support through a Veni grant and NWO Grant 16PR3237. Publisher Copyright: © 2023 The Authors. Published by American Chemical Society.

PY - 2023/7/26

Y1 - 2023/7/26

N2 - Two-dimensional transition metal dichalcogenide (TMDC) materials have shown great potential for usage in opto-electronic devices, especially down to the regime of a few layers to a single layer. However, at these limits, the material properties can be strongly influenced by the interfaces. By using photoconductive atomic force microscopy, we show a local enhancement of photoconductivity at the nanoscale in bilayer molybdenum disulfide on mica, where water is confined between the TMDC and the substrate. We have found that the structural phase of the water influences the doping level and thus the tunneling barrier at the nanojunction. This leads to an increase in photocurrent and enhanced photopower generation.

AB - Two-dimensional transition metal dichalcogenide (TMDC) materials have shown great potential for usage in opto-electronic devices, especially down to the regime of a few layers to a single layer. However, at these limits, the material properties can be strongly influenced by the interfaces. By using photoconductive atomic force microscopy, we show a local enhancement of photoconductivity at the nanoscale in bilayer molybdenum disulfide on mica, where water is confined between the TMDC and the substrate. We have found that the structural phase of the water influences the doping level and thus the tunneling barrier at the nanojunction. This leads to an increase in photocurrent and enhanced photopower generation.

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SN - 1932-7447

VL - 127

SP - 17171

EP - 17178

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 34

ER -

Photoconductivity Enhancement in Atomically Thin Molybdenum Disulfide through Local Doping from Confined Water

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