Towards control of Dielectric Properties in Single-Layer WS2via Defect Density Engineering

Hasret Aǧircan; Domenica Convertino; Antonio Rossi; Leonardo Martini; Simona Pace; Neeraj Mishra; Kathrin Kuster; Ulrich Starke; Güldem Kartal Şireli; Stiven Forti; Camilla Coletti

doi:10.1109/NMDC57951.2023.10344144

Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering

Hasret Aǧircan^*, Domenica Convertino, Antonio Rossi, Leonardo Martini, Simona Pace, Neeraj Mishra, Kathrin Kuster, Ulrich Starke, Güldem Kartal Şireli, Stiven Forti, Camilla Coletti

^*Corresponding author for this work

Department of Metallurgical and Materials Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

Tungsten disulfide (WS₂) possesses attractive optical and electronic properties, which make it a promising candidate for a wide range of applications. However, upon growth it exhibits an intrinsic variety of defects, affecting its electronic and optical characteristics. This study focuses on the control of dielectric properties of WS₂ via defect density engineering. In particular, we investigate atomically thin WS₂, grown via liquid phase chemical vapour deposition (LiP-CVD). By tuning the growth parameters, we can obtain WS₂ in different shapes and defect distribution, that are characterized by using optical spectroscopy, photoelectron spectroscopy, and Kelvin probe force microscopy. Our findings reveal the chemical nature of defects in WS₂ and their significant impact on the crystal's optical properties. By gaining a deeper understanding of the microscopic nature of defects in WS₂, this research provides a crucial contribution towards the development of a defect-controlled technology to tailor the dielectric environment in 2D crystals.

Original language	English
Title of host publication	2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023
Publisher	Institute of Electrical and Electronics Engineers Inc.
Pages	35-36
Number of pages	2
ISBN (Electronic)	9798350335460
DOIs	https://doi.org/10.1109/NMDC57951.2023.10344144
Publication status	Published - 2023
Event	18th IEEE Nanotechnology Materials and Devices Conference, NMDC 2023 - Paestum, Italy Duration: 22 Oct 2023 → 25 Oct 2023

Publication series

Name	2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023

Conference

Conference	18th IEEE Nanotechnology Materials and Devices Conference, NMDC 2023
Country/Territory	Italy
City	Paestum
Period	22/10/23 → 25/10/23

Bibliographical note

Publisher Copyright:
© 2023 IEEE.

Access to Document

10.1109/NMDC57951.2023.10344144

Cite this

Aǧircan, H., Convertino, D., Rossi, A., Martini, L., Pace, S., Mishra, N., Kuster, K., Starke, U., Şireli, G. K., Forti, S., & Coletti, C. (2023). Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering. In 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023 (pp. 35-36). (2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/NMDC57951.2023.10344144

Aǧircan, Hasret ; Convertino, Domenica ; Rossi, Antonio et al. / Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering. 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023. Institute of Electrical and Electronics Engineers Inc., 2023. pp. 35-36 (2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023).

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title = "Towards control of Dielectric Properties in Single-Layer WS2via Defect Density Engineering",

abstract = "Tungsten disulfide (WS2) possesses attractive optical and electronic properties, which make it a promising candidate for a wide range of applications. However, upon growth it exhibits an intrinsic variety of defects, affecting its electronic and optical characteristics. This study focuses on the control of dielectric properties of WS2 via defect density engineering. In particular, we investigate atomically thin WS2, grown via liquid phase chemical vapour deposition (LiP-CVD). By tuning the growth parameters, we can obtain WS2 in different shapes and defect distribution, that are characterized by using optical spectroscopy, photoelectron spectroscopy, and Kelvin probe force microscopy. Our findings reveal the chemical nature of defects in WS2 and their significant impact on the crystal's optical properties. By gaining a deeper understanding of the microscopic nature of defects in WS2, this research provides a crucial contribution towards the development of a defect-controlled technology to tailor the dielectric environment in 2D crystals.",

author = "Hasret Aǧircan and Domenica Convertino and Antonio Rossi and Leonardo Martini and Simona Pace and Neeraj Mishra and Kathrin Kuster and Ulrich Starke and {\c S}ireli, {G{\"u}ldem Kartal} and Stiven Forti and Camilla Coletti",

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doi = "10.1109/NMDC57951.2023.10344144",

language = "English",

series = "2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023",

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Aǧircan, H, Convertino, D, Rossi, A, Martini, L, Pace, S, Mishra, N, Kuster, K, Starke, U, Şireli, GK, Forti, S & Coletti, C 2023, Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering. in 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023. 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023, Institute of Electrical and Electronics Engineers Inc., pp. 35-36, 18th IEEE Nanotechnology Materials and Devices Conference, NMDC 2023, Paestum, Italy, 22/10/23. https://doi.org/10.1109/NMDC57951.2023.10344144

Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering. / Aǧircan, Hasret; Convertino, Domenica; Rossi, Antonio et al.
2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023. Institute of Electrical and Electronics Engineers Inc., 2023. p. 35-36 (2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Aǧircan, Hasret

AU - Convertino, Domenica

AU - Rossi, Antonio

AU - Martini, Leonardo

AU - Pace, Simona

AU - Mishra, Neeraj

AU - Kuster, Kathrin

AU - Starke, Ulrich

AU - Şireli, Güldem Kartal

AU - Forti, Stiven

AU - Coletti, Camilla

PY - 2023

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N2 - Tungsten disulfide (WS2) possesses attractive optical and electronic properties, which make it a promising candidate for a wide range of applications. However, upon growth it exhibits an intrinsic variety of defects, affecting its electronic and optical characteristics. This study focuses on the control of dielectric properties of WS2 via defect density engineering. In particular, we investigate atomically thin WS2, grown via liquid phase chemical vapour deposition (LiP-CVD). By tuning the growth parameters, we can obtain WS2 in different shapes and defect distribution, that are characterized by using optical spectroscopy, photoelectron spectroscopy, and Kelvin probe force microscopy. Our findings reveal the chemical nature of defects in WS2 and their significant impact on the crystal's optical properties. By gaining a deeper understanding of the microscopic nature of defects in WS2, this research provides a crucial contribution towards the development of a defect-controlled technology to tailor the dielectric environment in 2D crystals.

AB - Tungsten disulfide (WS2) possesses attractive optical and electronic properties, which make it a promising candidate for a wide range of applications. However, upon growth it exhibits an intrinsic variety of defects, affecting its electronic and optical characteristics. This study focuses on the control of dielectric properties of WS2 via defect density engineering. In particular, we investigate atomically thin WS2, grown via liquid phase chemical vapour deposition (LiP-CVD). By tuning the growth parameters, we can obtain WS2 in different shapes and defect distribution, that are characterized by using optical spectroscopy, photoelectron spectroscopy, and Kelvin probe force microscopy. Our findings reveal the chemical nature of defects in WS2 and their significant impact on the crystal's optical properties. By gaining a deeper understanding of the microscopic nature of defects in WS2, this research provides a crucial contribution towards the development of a defect-controlled technology to tailor the dielectric environment in 2D crystals.

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T3 - 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023

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BT - 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023

PB - Institute of Electrical and Electronics Engineers Inc.

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Y2 - 22 October 2023 through 25 October 2023

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Aǧircan H, Convertino D, Rossi A, Martini L, Pace S, Mishra N et al. Towards control of Dielectric Properties in Single-Layer WS₂via Defect Density Engineering. In 2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023. Institute of Electrical and Electronics Engineers Inc. 2023. p. 35-36. (2023 IEEE Nanotechnology Materials and Devices Conference, NMDC 2023). doi: 10.1109/NMDC57951.2023.10344144