Detailed Information

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

EGaIn Microelectrode for Electrical Characterization of ITO-Based van der Waals Interface and Airborne Molecular Contamination of ITO Surface

Authors
Kong, Gyu DonKim, MisoYoon, Hyo Jae
Issue Date
2015
Publisher
ELECTROCHEMICAL SOC INC
Citation
JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.162, no.9, pp.H703 - H712
Indexed
SCIE
SCOPUS
Journal Title
JOURNAL OF THE ELECTROCHEMICAL SOCIETY
Volume
162
Number
9
Start Page
H703
End Page
H712
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/96273
DOI
10.1149/2.0871509jes
ISSN
0013-4651
Abstract
This paper describes the electrical characterization of the van der Waals interfaces formed between indium-tin oxide (ITO) and a liquid metal-based microelectrode. We examined the influence of the adventitious contamination of the ITO surface by airborne molecular contaminants on the electrical transport across an ITO-based van der Waals interface. We constructed large-area junctions of the form ITO//Ga2O3/EGaIn, where EGaIn is a liquid eutectic gallium-indium alloy covered with a self-passivating thin oxide film (Ga2O3 of similar to 0.7 nm), and "//" denotes the van der Waals interface formed between the ITO and EGaln electrodes. Comparisons of the current density data for junctions formed with ITO surfaces prepared via five different surface cleaning methods utilizing UV light, ozone and/or organic solvent (ethanol) indicated that the electrical conductance of the ITO//Ga2O3 van der Waals interface was significantly enhanced (by three orders of magnitude) by UV/ozone surface cleaning, based on comparisons of the median value of the log-current density, and the dispersion of the data was significantly narrowed. The results reported in this work show that the electrical characterization of surfaces using the EGaIn-based microelectrode is an attractive method for investigating the electrical behavior of a conducting surface and the molecular adsorption phenomena on it. (C) 2015 The Electrochemical Society. All rights reserved.
Files in This Item
There are no files associated with this item.
Appears in
Collections
College of Science > Department of Chemistry > 1. Journal Articles

qrcode

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

Related Researcher

Researcher YOON, Hyo Jae photo

YOON, Hyo Jae
이과대학 (화학과)
Read more

Altmetrics

Total Views & Downloads

BROWSE