Quality Heterostructures from Two-Dimensional Crystals Unstable in Air by Their Assembly in Inert Atmosphere

被引：382

作者：

Cao, Y. ^{[1
,2
]}

Mishchenko, A. ^{[1
]}

Yu, G. L. ^{[1
]}

Khestanova, E. ^{[1
,2
]}

Rooney, A. P. ^{[3
]}

Prestat, E. ^{[3
]}

Kretinin, A. V. ^{[1
,2
]}

Blake, P. ^{[4
]}

Shalom, M. B. ^{[1
,2
]}

Woods, C. ^{[1
]}

Chapman, J. ^{[1
]}

Balakrishnan, G. ^{[5
]}

Grigorieva, I. V. ^{[1
]}

Novoselov, K. S. ^{[1
]}

Piot, B. A. ^{[6
]}

Potemski, M. ^{[6
]}

Watanabe, K. ^{[7
]}

Taniguchi, T. ^{[7
]}

Haigh, S. J. ^{[3
]}

Geim, A. K. ^{[1
,2
]}

Gorbachev, R. V. ^{[1
,2
]}

机构：

[1] Univ Manchester, Sch Phys & Astron, Manchester M13 9PL, Lancs, England

[2] Univ Manchester, Manchester Ctr Mesosci & Nanotechnol, Manchester M13 9PL, Lancs, England

[3] Univ Manchester, Sch Mat, Manchester M13 9PL, Lancs, England

[4] Graphene Ind Ltd, Manchester M13 9HQ, Lancs, England

[5] Univ Warwick, Dept Phys, Coventry CV4 7AL, W Midlands, England

[6] CNRS UJF UPS INSA, Lab Natl Champs Magnet Intenses, F-38042 Grenoble, France

[7] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050044, Japan

来源：

NANO LETTERS | 2015年 / 15卷 / 08期

基金：

英国工程与自然科学研究理事会;

关键词：

Phosphorene; niobium diselenide; transition metal dichalcogenides; superconductivity; field effect; electronic transport; BLACK PHOSPHORUS; SUPERCONDUCTIVITY; TRANSPORT;

D O I：

10.1021/acs.nanolett.5b00648

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Many layered materials can be cleaved down to individual atomic planes, similar to graphene, but only a small minority of them are stable under ambient conditions. The rest react and decompose in air, which has severely hindered their investigation and potential applications. Here we introduce a remedial approach based on cleavage, transfer, alignment, and encapsulation of air-sensitive crystals, all inside a controlled inert atmosphere. To illustrate the technology, we choose two archetypal two-dimensional crystals that are of intense scientific interest but are unstable in air: black phosphorus and niobium diselenide. Our field-effect devices made from their monolayers are conductive and fully stable under ambient conditions, which is in contrast to the counterparts processed in air. NbSe2 remains superconducting down to the monolayer thickness. Starting with a trilayer, phosphorene devices reach sufficiently high mobilities to exhibit Landau quantization. The approach offers a venue to significantly expand the range of experimentally accessible two-dimensional crystals and their heterostructures.

引用

页码：4914 / 4921

页数：8

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