Interfacial water intercalation-induced metal-insulator transition in NbS                         2                         /BN heterostructure

Rui Xu; Xinsheng Wang; Zhiyue Zheng; Shili Ye; Kunqi Xu; Le Lei; Sabir Hussain; Fei Pang; Xinmeng Liu; Yan Jun Li; Yasuhiro Sugawara; Wei Ji; Liming Xie; Zhihai Cheng

doi:10.1088/1361-6528/ab0452

Interfacial water intercalation-induced metal-insulator transition in NbS ₂ /BN heterostructure

Rui Xu
, Xinsheng Wang
, Zhiyue Zheng
, Shili Ye
, Kunqi Xu
, Le Lei
, Sabir Hussain
, Fei Pang
, Xinmeng Liu
, Yan Jun Li
, Yasuhiro Sugawara
, Wei Ji
, Liming Xie
, Zhihai Cheng

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

Abstract

Interfacial engineering, such as molecule intercalation, can modify properties and optimize performance of van der Waals heterostructures and their devices. Here, we investigated the pristine and water molecule intercalated heterointerface of niobium disulphide (NbS ₂ ) on hexagonal boron nitride (h-BN) (NbS ₂ /BN) using advanced atomic force microscopy (AFM), and observed the metal-insulator transition (MIT) of first layer (1L-) of NbS ₂ induced by water molecule intercalation. In pristine sample, interfacial charge transfers were confirmed by the direct detection of trapped static charges at the post-exposed h-BN surface, produced by mechanically peeling off the 1L-NbS ₂ from the substrate. The interfacial charge transfers facilitate the intercalation of water molecules at the heterointerface. The intercalated water layers make a MIT of 1L-NbS ₂ , while the pristine metallic state of the following NbS ₂ layers remains preserved. This work is of great significance to help understand the interfacial properties of 2D metal/insulator heterostructures and can pave the way for further preparation of an ultrathin transistor.

Original language	English
Article number	205702
Journal	Nanotechnology
Volume	30
Issue number	20
DOIs	https://doi.org/10.1088/1361-6528/ab0452
Publication status	Published - 11 Mar 2019
Externally published	Yes

Keywords

2D material
electrostatic force microscopy
interfacial intercalation
metal-insulator transition
van der Waals heterointerface

Access to Document

10.1088/1361-6528/ab0452

Cite this

Xu, R., Wang, X., Zheng, Z., Ye, S., Xu, K., Lei, L., Hussain, S., Pang, F., Liu, X., Li, Y. J., Sugawara, Y., Ji, W., Xie, L., & Cheng, Z. (2019). Interfacial water intercalation-induced metal-insulator transition in NbS ₂ /BN heterostructure Nanotechnology, 30(20), Article 205702. https://doi.org/10.1088/1361-6528/ab0452

@article{5a7a9f8bea6f4bc0af5c93dc34e6a99d,

title = " Interfacial water intercalation-induced metal-insulator transition in NbS 2 /BN heterostructure ",

abstract = " Interfacial engineering, such as molecule intercalation, can modify properties and optimize performance of van der Waals heterostructures and their devices. Here, we investigated the pristine and water molecule intercalated heterointerface of niobium disulphide (NbS 2 ) on hexagonal boron nitride (h-BN) (NbS 2 /BN) using advanced atomic force microscopy (AFM), and observed the metal-insulator transition (MIT) of first layer (1L-) of NbS 2 induced by water molecule intercalation. In pristine sample, interfacial charge transfers were confirmed by the direct detection of trapped static charges at the post-exposed h-BN surface, produced by mechanically peeling off the 1L-NbS 2 from the substrate. The interfacial charge transfers facilitate the intercalation of water molecules at the heterointerface. The intercalated water layers make a MIT of 1L-NbS 2 , while the pristine metallic state of the following NbS 2 layers remains preserved. This work is of great significance to help understand the interfacial properties of 2D metal/insulator heterostructures and can pave the way for further preparation of an ultrathin transistor.",

keywords = "2D material, electrostatic force microscopy, interfacial intercalation, metal-insulator transition, van der Waals heterointerface",

author = "Rui Xu and Xinsheng Wang and Zhiyue Zheng and Shili Ye and Kunqi Xu and Le Lei and Sabir Hussain and Fei Pang and Xinmeng Liu and Li, \{Yan Jun\} and Yasuhiro Sugawara and Wei Ji and Liming Xie and Zhihai Cheng",

note = "Publisher Copyright: {\textcopyright} 2019 IOP Publishing Ltd.",

year = "2019",

month = mar,

day = "11",

doi = "10.1088/1361-6528/ab0452",

language = "English",

volume = "30",

journal = "Nanotechnology",

issn = "0957-4484",

publisher = "IOP Publishing Ltd.",

number = "20",

}

Xu, R, Wang, X, Zheng, Z, Ye, S, Xu, K, Lei, L, Hussain, S, Pang, F, Liu, X, Li, YJ, Sugawara, Y, Ji, W, Xie, L & Cheng, Z 2019, ' Interfacial water intercalation-induced metal-insulator transition in NbS ₂ /BN heterostructure ', Nanotechnology, vol. 30, no. 20, 205702. https://doi.org/10.1088/1361-6528/ab0452

TY - JOUR

T1 - Interfacial water intercalation-induced metal-insulator transition in NbS 2 /BN heterostructure

AU - Xu, Rui

AU - Wang, Xinsheng

AU - Zheng, Zhiyue

AU - Ye, Shili

AU - Xu, Kunqi

AU - Lei, Le

AU - Hussain, Sabir

AU - Pang, Fei

AU - Liu, Xinmeng

AU - Li, Yan Jun

AU - Sugawara, Yasuhiro

AU - Ji, Wei

AU - Xie, Liming

AU - Cheng, Zhihai

PY - 2019/3/11

Y1 - 2019/3/11

N2 - Interfacial engineering, such as molecule intercalation, can modify properties and optimize performance of van der Waals heterostructures and their devices. Here, we investigated the pristine and water molecule intercalated heterointerface of niobium disulphide (NbS 2 ) on hexagonal boron nitride (h-BN) (NbS 2 /BN) using advanced atomic force microscopy (AFM), and observed the metal-insulator transition (MIT) of first layer (1L-) of NbS 2 induced by water molecule intercalation. In pristine sample, interfacial charge transfers were confirmed by the direct detection of trapped static charges at the post-exposed h-BN surface, produced by mechanically peeling off the 1L-NbS 2 from the substrate. The interfacial charge transfers facilitate the intercalation of water molecules at the heterointerface. The intercalated water layers make a MIT of 1L-NbS 2 , while the pristine metallic state of the following NbS 2 layers remains preserved. This work is of great significance to help understand the interfacial properties of 2D metal/insulator heterostructures and can pave the way for further preparation of an ultrathin transistor.

AB - Interfacial engineering, such as molecule intercalation, can modify properties and optimize performance of van der Waals heterostructures and their devices. Here, we investigated the pristine and water molecule intercalated heterointerface of niobium disulphide (NbS 2 ) on hexagonal boron nitride (h-BN) (NbS 2 /BN) using advanced atomic force microscopy (AFM), and observed the metal-insulator transition (MIT) of first layer (1L-) of NbS 2 induced by water molecule intercalation. In pristine sample, interfacial charge transfers were confirmed by the direct detection of trapped static charges at the post-exposed h-BN surface, produced by mechanically peeling off the 1L-NbS 2 from the substrate. The interfacial charge transfers facilitate the intercalation of water molecules at the heterointerface. The intercalated water layers make a MIT of 1L-NbS 2 , while the pristine metallic state of the following NbS 2 layers remains preserved. This work is of great significance to help understand the interfacial properties of 2D metal/insulator heterostructures and can pave the way for further preparation of an ultrathin transistor.

KW - 2D material

KW - electrostatic force microscopy

KW - interfacial intercalation

KW - metal-insulator transition

KW - van der Waals heterointerface

UR - https://www.scopus.com/pages/publications/85062836270

U2 - 10.1088/1361-6528/ab0452

DO - 10.1088/1361-6528/ab0452

M3 - Article

C2 - 30716728

AN - SCOPUS:85062836270

SN - 0957-4484

VL - 30

JO - Nanotechnology

JF - Nanotechnology

IS - 20

M1 - 205702

ER -

Interfacial water intercalation-induced metal-insulator transition in NbS ₂ /BN heterostructure

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this