335 199

Electrically Tunable and Negative Schottky Barriers in Multi-layered Graphene/MoS2 Heterostructured Transistors

Title
Electrically Tunable and Negative Schottky Barriers in Multi-layered Graphene/MoS2 Heterostructured Transistors
Author
김은규
Keywords
FIELD-EFFECT TRANSISTORS; SINGLE-LAYER MOS2; MOLYBDENUM-DISULFIDE; MONOLAYER MOS2; MEMORY DEVICES; WORK FUNCTION; ELECTRONICS; CONTACTS; SEMICONDUCTOR; TECHNOLOGY
Issue Date
2015-09
Publisher
NATURE PUBLISHING GROUP
Citation
SCIENTIFIC REPORTS, v. 5, Page. 13743-13749
Abstract
We fabricated multi-layered graphene/MoS2 heterostructured devices by positioning mechanically exfoliated bulk graphite and single-crystalline 2H-MoS2 onto Au metal pads on a SiO2/Si substrate via a contamination-free dry transfer technique. We also studied the electrical transport properties of Au/MoS2 junction devices for systematic comparison. A previous work has demonstrated the existence of a positive Schottky barrier height (SBH) in the metal/MoS2 system. However, analysis of the SBH indicates that the contacts of the multi-layered graphene/MoS2 have tunable negative barriers in the range of 300 to -46 meV as a function of gate voltage. It is hypothesized that this tunable SBH is responsible for the modulation of the work function of the thick graphene in these devices. Despite the large number of graphene layers, it is possible to form ohmic contacts, which will provide new opportunities for the engineering of highly efficient contacts in flexible electronics and photonics.
URI
https://www.nature.com/articles/srep13743http://hdl.handle.net/20.500.11754/27592
ISSN
2045-2322
DOI
10.1038/srep13743
Appears in Collections:
COLLEGE OF NATURAL SCIENCES[S](자연과학대학) > PHYSICS(물리학과) > Articles
Files in This Item:
Electrically Tunable and Negative Schottky Barriers in Multi-layered Graphene MoS2 Heterostructured Transistors.pdfDownload
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE