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Virtual Out-of-Plane Piezoelectric Response in MoS2 Layers Controlled by Ferroelectric Polarization

Title
Virtual Out-of-Plane Piezoelectric Response in MoS2 Layers Controlled by Ferroelectric Polarization
Authors
Jin, Hye-JinYoon, Woo YoungJo, William
Ewha Authors
조윌렴
SCOPUS Author ID
조윌렴scopus
Issue Date
2018
Journal Title
ACS APPLIED MATERIALS & INTERFACES
ISSN
1944-8244JCR Link
Citation
ACS APPLIED MATERIALS & INTERFACES vol. 10, no. 1, pp. 1334 - 1339
Keywords
MoS2MoS2-oxide heterostructureferroelectricspolarizationpiezoelectricity
Publisher
AMER CHEMICAL SOC
Indexed
SCI; SCIE; SCOPUS WOS scopus
Document Type
Article
Abstract
The MoS2 carrier distribution can be controlled with the use of a dielectric environment substrate. Ferroelectric thin films are used to investigate the electrical responses at the MoS2 layer. The MoS2/(111)-PbTiO3 vertical heterostructure is investigated, and the electrical responses, including piezoelectricity, are obtained using piezoresponse force microscopy. The piezoelectric response modifications obtained at the MoS2 layer on the ferroelectric thin films are a result of the depolarizing effect. In particular, the piezoelectricity enhancement is observed at the 19-layer MoS2 because of an induced dipole effect. By considering the polarization effects of ferroelectric thin films, the electrical responses at the MoS2 layers can be controlled, and the interfacial carrier distribution at the interface results in different electrical performances at the MoS2.
DOI
10.1021/acsami.7b14001
Appears in Collections:
자연과학대학 > 물리학전공 > Journal papers
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