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Cited 3 time in webofscience Cited 3 time in scopus
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Enhanced thermoelectric performance of defect engineered monolayer graphene

Authors
Kim, WoochangLee, WonseokLee, Seung-MoKim, DuckjongPark, Jinsung
Issue Date
Apr-2022
Publisher
Institute of Physics Publishing
Keywords
graphene; defect engineering; thermoelectric figure of merit; thermoelectric property measurement
Citation
Nanotechnology, v.33, no.17
Indexed
SCIE
SCOPUS
Journal Title
Nanotechnology
Volume
33
Number
17
URI
https://scholarworks.gnu.ac.kr/handle/sw.gnu/1374
DOI
10.1088/1361-6528/ac4aa6
ISSN
0957-4484
1361-6528
Abstract
We propose a method of improving the thermoelectric properties of graphene using defect engineering through plasma irradiation and atomic layer deposition (ALD). We intentionally created atomic blemishes in graphene by oxygen plasma treatment and subsequently healed the atomistically defective places using Pt-ALD. After healing, the thermal conductivity of the initially defective graphene increased slightly, while the electrical conductivity and the square of the Seebeck coefficient increased pronouncedly. The thermoelectric figure of merit of the Pt-ALD treated graphene was measured to be over 4.8 times higher than the values reported in the literature. We expect that our study could provide a useful guideline for the development of graphene-based thermoelectric devices.
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