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Effects of Surface Modifications to Single and Multilayer Graphene Temperature Coefficient of Resistance

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Title
Effects of Surface Modifications to Single and Multilayer Graphene Temperature Coefficient of Resistance
Author(s)
Jorge Torres; Yulin Liu; Seth So; Hojoon Yi; Sangho Park; Jung-Kun Lee; Seong Chu Lim; Minhee Yun
Publication Date
2020-10
Journal
ACS APPLIED MATERIALS & INTERFACES, v.12, no.43, pp.48890 - 48898
Publisher
AMER CHEMICAL SOC
Abstract
© 2020 American Chemical Society. Interfacial effects on single-layer graphene (SLG) or multilayer graphene (MLG) properties greatly affect device performance. Thus, the effect of the interface on the temperature coefficient of resistance (TCR) on SLG and MLG due to surface-deposited core-shell metallic nanoparticles (MNPs) and various substrates was experimentally investigated. Observed substrates included glass, SiO2, and Si3N4. We show that these modifications can be used to strongly influence SLG interface effects, thus increasing the TCR up to a 0.456% per K resistance change when in contact with the SiO2 substrate at the bottom surface and MNPs on the top surface. However, these surface interactions are muted in MLG due to the screening effect of nonsuperficial layers, only achieving a -0.0998% per K resistance change in contact with the bottom Si3N4 substrate and the top MNPs. We also demonstrate contrary thermal sensitivity responses between SLG and MLG after the addition of MNP to the surface
URI
https://pr.ibs.re.kr/handle/8788114/8455
DOI
10.1021/acsami.0c09621
ISSN
1944-8244
Appears in Collections:
Center for Integrated Nanostructure Physics(나노구조물리 연구단) > 1. Journal Papers (저널논문)
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