Detailed Information

Cited 0 time in webofscience Cited 0 time in scopus
Metadata Downloads

Air Annealing Process for Threshold Voltage Tuning of MoTe2 FETopen access

Authors
Kim, SoojinRoh, YeeunChoi, YoungukJun, Ah HyunSeo, HojunJu, Byeong-Kwon
Issue Date
4월-2022
Publisher
MDPI
Keywords
MoTe2; transition metal dichalcogenides; field-effect transistors; doping; threshold voltage; charge neutrality
Citation
APPLIED SCIENCES-BASEL, v.12, no.8
Indexed
SCIE
SCOPUS
Journal Title
APPLIED SCIENCES-BASEL
Volume
12
Number
8
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/140819
DOI
10.3390/app12083840
ISSN
2076-3417
Abstract
A stable doping technique for modifying the conduction behaviour of two-dimensional (2D) nanomaterial-based transistors is imperative for applications based on low-power complementary oxide thin-film transistors. Achieving an ambipolar feature with a controlled threshold voltage in both the p- and n-regimes is crucial for applying MoTe2-based devices as electronic devices because their native doping states are unipolar. In this study, a simple method to tune the threshold voltage of MoTe2 field-effect transistors (FETs) was investigated in order to realise an enhancement-mode MoTe2 thin-film transistor by implementing a facile method to modulate the carrier polarity based on the oxidative properties of MoTe2 FETs. Annealing in air induced a continuous p-doping effect in the devices without significant electrical degradation. Through a precise control of the duration and temperature of the post-annealing process, the tailoring technique induces hole doping, which results in a remarkable shift in transfer characteristics, thus leading to a charge neutrality point of the devices at zero gate bias. This study demonstrates the considerable potential of air heating as a reliable and economical post-processing method for precisely modifying the threshold voltage and further controlling the doping states of MoTe2-based FETs for use in logic inverters with 2D semiconductors.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Engineering > School of Electrical Engineering > 1. Journal Articles

qrcode

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

Altmetrics

Total Views & Downloads

BROWSE