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Piezotronics and piezo-phototronics in two-dimensional materials

Published online by Cambridge University Press:  10 December 2018

Yudong Liu ,
Erlin Tresna Nurlianti Wahyudin ,
Jr-Hau He  and
Junyi Zhai
Yudong Liu
Affiliation:
Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, China; [email protected]
Erlin Tresna Nurlianti Wahyudin
Affiliation:
Department of Materials Science and Engineering, King Abdullah University of Science and Technology, Saudi Arabia; [email protected]
Jr-Hau He
Affiliation:
Department of Electrical Engineering, King Abdullah University of Science and Technology, Saudi Arabia; [email protected]
Junyi Zhai
Affiliation:
Micro-/Nanopiezoelectric Materials and Devices Group, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, China; [email protected]
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Abstract

This article discusses recent studies of piezotronics and piezo-phototronics of two-dimensional (2D) materials. Two-dimensional semiconductor materials have demonstrated excellent electronic and optoelectronic properties, and these ultrathin materials are candidates for next-generation devices. Among 2D semiconductors, transition-metal dichalcogenides in particular have large in-place piezoelectricity due to the noncentrosymmetry along the armchair direction. A strong coupling of piezoelectric and semiconducting properties has been reported for Schottky contacts and p–n junctions, even in single-layer materials. Since the carrier concentration of ultrathin 2D materials can be easily modulated by external piezocharges, layered composites of ferroelectric/2D materials also show promising piezotronic and piezo-phototronic properties.

Keywords

piezoelectricphotoconductivityoptoelectroniclayeredsemiconducting
Type
Piezotronics and Piezo-Phototronics
Information
MRS Bulletin , Volume 43 , Issue 12: Piezotronics and Piezo-Phototronics , December 2018 , pp. 959 - 964
Copyright
Copyright © Materials Research Society 2018 

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