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Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics
High-performance piezoelectricity in monolayer semiconducting transition metal dichalcogenides is highly desirable for the development of nanosensors, piezotronics and photo-piezotransistors. Here we report the experimental study of the theoretically predicted piezoelectric effect in triangle monola...
Autores principales: | , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Pub. Group
2015
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491182/ https://www.ncbi.nlm.nih.gov/pubmed/26109177 http://dx.doi.org/10.1038/ncomms8430 |
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author | Qi, Junjie Lan, Yann-Wen Stieg, Adam Z. Chen, Jyun-Hong Zhong, Yuan-Liang Li, Lain-Jong Chen, Chii-Dong Zhang, Yue Wang, Kang L. |
author_facet | Qi, Junjie Lan, Yann-Wen Stieg, Adam Z. Chen, Jyun-Hong Zhong, Yuan-Liang Li, Lain-Jong Chen, Chii-Dong Zhang, Yue Wang, Kang L. |
author_sort | Qi, Junjie |
collection | PubMed |
description | High-performance piezoelectricity in monolayer semiconducting transition metal dichalcogenides is highly desirable for the development of nanosensors, piezotronics and photo-piezotransistors. Here we report the experimental study of the theoretically predicted piezoelectric effect in triangle monolayer MoS(2) devices under isotropic mechanical deformation. The experimental observation indicates that the conductivity of MoS(2) devices can be actively modulated by the piezoelectric charge polarization-induced built-in electric field under strain variation. These polarization charges alter the Schottky barrier height on both contacts, resulting in a barrier height increase with increasing compressive strain and decrease with increasing tensile strain. The underlying mechanism of strain-induced in-plane charge polarization is proposed and discussed using energy band diagrams. In addition, a new type of MoS(2) strain/force sensor built using a monolayer MoS(2) triangle is also demonstrated. Our results provide evidence for strain-gating monolayer MoS(2) piezotronics, a promising avenue for achieving augmented functionalities in next-generation electronic and mechanical–electronic nanodevices. |
format | Online Article Text |
id | pubmed-4491182 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2015 |
publisher | Nature Pub. Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-44911822015-07-08 Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics Qi, Junjie Lan, Yann-Wen Stieg, Adam Z. Chen, Jyun-Hong Zhong, Yuan-Liang Li, Lain-Jong Chen, Chii-Dong Zhang, Yue Wang, Kang L. Nat Commun Article High-performance piezoelectricity in monolayer semiconducting transition metal dichalcogenides is highly desirable for the development of nanosensors, piezotronics and photo-piezotransistors. Here we report the experimental study of the theoretically predicted piezoelectric effect in triangle monolayer MoS(2) devices under isotropic mechanical deformation. The experimental observation indicates that the conductivity of MoS(2) devices can be actively modulated by the piezoelectric charge polarization-induced built-in electric field under strain variation. These polarization charges alter the Schottky barrier height on both contacts, resulting in a barrier height increase with increasing compressive strain and decrease with increasing tensile strain. The underlying mechanism of strain-induced in-plane charge polarization is proposed and discussed using energy band diagrams. In addition, a new type of MoS(2) strain/force sensor built using a monolayer MoS(2) triangle is also demonstrated. Our results provide evidence for strain-gating monolayer MoS(2) piezotronics, a promising avenue for achieving augmented functionalities in next-generation electronic and mechanical–electronic nanodevices. Nature Pub. Group 2015-06-25 /pmc/articles/PMC4491182/ /pubmed/26109177 http://dx.doi.org/10.1038/ncomms8430 Text en Copyright © 2015, Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Qi, Junjie Lan, Yann-Wen Stieg, Adam Z. Chen, Jyun-Hong Zhong, Yuan-Liang Li, Lain-Jong Chen, Chii-Dong Zhang, Yue Wang, Kang L. Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title | Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title_full | Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title_fullStr | Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title_full_unstemmed | Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title_short | Piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
title_sort | piezoelectric effect in chemical vapour deposition-grown atomic-monolayer triangular molybdenum disulfide piezotronics |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4491182/ https://www.ncbi.nlm.nih.gov/pubmed/26109177 http://dx.doi.org/10.1038/ncomms8430 |
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