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Title: 2D Electrets of Ultrathin MoO2 with Apparent Piezoelectricity

Abstract

Abstract Since graphene, a variety of 2D materials have been fabricated in a quest for a tantalizing combination of properties and desired physiochemical behavior. 2D materials that are piezoelectric, i.e., that allow for a facile conversion of electrical energy into mechanical and vice versa, offer applications for sensors, actuators, energy harvesting, stretchable and flexible electronics, and energy storage, among others. Unfortunately, materials must satisfy stringent symmetry requirements to be classified as piezoelectric. Here, 2D ultrathin single‐crystal molybdenum oxide (MoO 2 ) flakes that exhibit unexpected piezoelectric‐like response are fabricated, as MoO 2 is centrosymmetric and should not exhibit intrinsic piezoelectricity. However, it is demonstrated that the apparent piezoelectricity in 2D MoO 2 emerges from an electret‐like behavior induced by the trapping and stabilization of charges around defects in the material. Arguably, the material represents the first 2D electret material and suggests a route to artificially engineer piezoelectricity in 2D crystals. Specifically, it is found that the maximum out‐of‐plane piezoresponse is 0.56 pm V −1 , which is as strong as that observed in conventional 2D piezoelectric materials. The charges are found to be highly stable at room temperature with a trapping energy barrier of ≈2 eV.

Authors:
 [1];  [2];  [2]; ORCiD logo [3];  [2];  [1]; ORCiD logo [3];  [2];  [2];  [1];  [1]
  1. Rice Univ., Houston, TX (United States)
  2. Univ. of Houston, TX (United States)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1649561
Alternate Identifier(s):
OSTI ID: 1617393
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Accepted Manuscript
Journal Name:
Advanced Materials
Additional Journal Information:
Journal Volume: 32; Journal Issue: 24; Journal ID: ISSN 0935-9648
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Apte, Amey, Mozaffari, Kosar, Samghabadi, Farnaz, Hachtel, Jordan, Chang, Long, Susarla, Sandhya, Idrobo Tapia, Juan, Litvinov, Dmitri, Sharma, Pradeep, Puthirath, Anand B., and Ajayan, Pulickel. 2D Electrets of Ultrathin MoO2 with Apparent Piezoelectricity. United States: N. p., 2020. Web. doi:10.1002/adma.202000006.
Apte, Amey, Mozaffari, Kosar, Samghabadi, Farnaz, Hachtel, Jordan, Chang, Long, Susarla, Sandhya, Idrobo Tapia, Juan, Litvinov, Dmitri, Sharma, Pradeep, Puthirath, Anand B., & Ajayan, Pulickel. 2D Electrets of Ultrathin MoO2 with Apparent Piezoelectricity. United States. https://doi.org/10.1002/adma.202000006
Apte, Amey, Mozaffari, Kosar, Samghabadi, Farnaz, Hachtel, Jordan, Chang, Long, Susarla, Sandhya, Idrobo Tapia, Juan, Litvinov, Dmitri, Sharma, Pradeep, Puthirath, Anand B., and Ajayan, Pulickel. Wed . "2D Electrets of Ultrathin MoO2 with Apparent Piezoelectricity". United States. https://doi.org/10.1002/adma.202000006. https://www.osti.gov/servlets/purl/1649561.
@article{osti_1649561,
title = {2D Electrets of Ultrathin MoO2 with Apparent Piezoelectricity},
author = {Apte, Amey and Mozaffari, Kosar and Samghabadi, Farnaz and Hachtel, Jordan and Chang, Long and Susarla, Sandhya and Idrobo Tapia, Juan and Litvinov, Dmitri and Sharma, Pradeep and Puthirath, Anand B. and Ajayan, Pulickel},
abstractNote = {Abstract Since graphene, a variety of 2D materials have been fabricated in a quest for a tantalizing combination of properties and desired physiochemical behavior. 2D materials that are piezoelectric, i.e., that allow for a facile conversion of electrical energy into mechanical and vice versa, offer applications for sensors, actuators, energy harvesting, stretchable and flexible electronics, and energy storage, among others. Unfortunately, materials must satisfy stringent symmetry requirements to be classified as piezoelectric. Here, 2D ultrathin single‐crystal molybdenum oxide (MoO 2 ) flakes that exhibit unexpected piezoelectric‐like response are fabricated, as MoO 2 is centrosymmetric and should not exhibit intrinsic piezoelectricity. However, it is demonstrated that the apparent piezoelectricity in 2D MoO 2 emerges from an electret‐like behavior induced by the trapping and stabilization of charges around defects in the material. Arguably, the material represents the first 2D electret material and suggests a route to artificially engineer piezoelectricity in 2D crystals. Specifically, it is found that the maximum out‐of‐plane piezoresponse is 0.56 pm V −1 , which is as strong as that observed in conventional 2D piezoelectric materials. The charges are found to be highly stable at room temperature with a trapping energy barrier of ≈2 eV.},
doi = {10.1002/adma.202000006},
journal = {Advanced Materials},
number = 24,
volume = 32,
place = {United States},
year = {Wed May 06 00:00:00 EDT 2020},
month = {Wed May 06 00:00:00 EDT 2020}
}

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Works referenced in this record:

Engineered Piezoelectricity in Graphene
journal, January 2012


Differentiating Ferroelectric and Nonferroelectric Electromechanical Effects with Scanning Probe Microscopy
journal, May 2015


Out-of-Plane Electromechanical Response of Monolayer Molybdenum Disulfide Measured by Piezoresponse Force Microscopy
journal, August 2017


Computational investigation of the lubrication behaviors of dioxides and disulfides of molybdenum and tungsten in vacuum
journal, March 2017


DC-biased ferroelectrets with large piezoelectric d33-coefficients
journal, April 2008

  • Hillenbrand, J.; Sessler, G. M.
  • Journal of Applied Physics, Vol. 103, Issue 7
  • DOI: 10.1063/1.2901169

Giant piezoelectricity of monolayer group IV monochalcogenides: SnSe, SnS, GeSe, and GeS
journal, October 2015

  • Fei, Ruixiang; Li, Wenbin; Li, Ju
  • Applied Physics Letters, Vol. 107, Issue 17
  • DOI: 10.1063/1.4934750

Voltage induced local hysteretic phase switching in silicon
journal, April 2014

  • Sekhon, Jagmeet S.; Aggarwal, Leena; Sheet, Goutam
  • Applied Physics Letters, Vol. 104, Issue 16
  • DOI: 10.1063/1.4873386

Ab Initio Prediction of Piezoelectricity in Two-Dimensional Materials
journal, September 2015

  • Blonsky, Michael N.; Zhuang, Houlong L.; Singh, Arunima K.
  • ACS Nano, Vol. 9, Issue 10
  • DOI: 10.1021/acsnano.5b03394

Piezoelectric monolayers as nonlinear energy harvesters
journal, April 2014


Coaxing graphene to be piezoelectric
journal, January 2012

  • Chandratre, Swapnil; Sharma, Pradeep
  • Applied Physics Letters, Vol. 100, Issue 2
  • DOI: 10.1063/1.3676084

Quadratic electromechanical strain in silicon investigated by scanning probe microscopy
journal, April 2018

  • Yu, Junxi; Esfahani, Ehsan Nasr; Zhu, Qingfeng
  • Journal of Applied Physics, Vol. 123, Issue 15
  • DOI: 10.1063/1.5023407

Piezo/triboelectric nanogenerators based on 2-dimensional layered structure materials
journal, March 2019


Atomically thin hexagonal boron nitride probed by ultrahigh-resolution transmission electron microscopy
journal, October 2009


Quaternary 2D Transition Metal Dichalcogenides (TMDs) with Tunable Bandgap
journal, July 2017

  • Susarla, Sandhya; Kutana, Alex; Hachtel, Jordan A.
  • Advanced Materials, Vol. 29, Issue 35
  • DOI: 10.1002/adma.201702457

A streaming multi-GPU implementation of image simulation algorithms for scanning transmission electron microscopy
journal, October 2017

  • Pryor, Alan; Ophus, Colin; Miao, Jianwei
  • Advanced Structural and Chemical Imaging, Vol. 3, Issue 1
  • DOI: 10.1186/s40679-017-0048-z

Large In-Plane and Vertical Piezoelectricity in Janus Transition Metal Dichalchogenides
journal, July 2017


Defect engineering of two-dimensional transition metal dichalcogenides
journal, April 2016


Second harmonic microscopy of monolayer MoS 2
journal, April 2013


Intrinsic Two-Dimensional Ferroelectricity with Dipole Locking
journal, May 2018


Switching spectroscopy piezoresponse force microscopy of ferroelectric materials
journal, February 2006

  • Jesse, Stephen; Baddorf, Arthur P.; Kalinin, Sergei V.
  • Applied Physics Letters, Vol. 88, Issue 6
  • DOI: 10.1063/1.2172216

Anomalous piezoelectricity in two-dimensional graphene nitride nanosheets
journal, June 2014

  • Zelisko, Matthew; Hanlumyuang, Yuranan; Yang, Shubin
  • Nature Communications, Vol. 5, Issue 1
  • DOI: 10.1038/ncomms5284

Piezoelectric Effects in Surface-Engineered Two-Dimensional Group III Nitrides
journal, December 2018

  • Guo, Yaguang; Zhu, Huaiqiu; Wang, Qian
  • ACS Applied Materials & Interfaces, Vol. 11, Issue 1
  • DOI: 10.1021/acsami.8b17341

Grains and grain boundaries in highly crystalline monolayer molybdenum disulphide
journal, May 2013

  • van der Zande, Arend M.; Huang, Pinshane Y.; Chenet, Daniel A.
  • Nature Materials, Vol. 12, Issue 6, p. 554-561
  • DOI: 10.1038/nmat3633

Re Doping in 2D Transition Metal Dichalcogenides as a New Route to Tailor Structural Phases and Induced Magnetism
journal, October 2017

  • Kochat, Vidya; Apte, Amey; Hachtel, Jordan A.
  • Advanced Materials, Vol. 29, Issue 43
  • DOI: 10.1002/adma.201703754

Piezoelectric properties of graphene oxide: A first-principles computational study
journal, July 2014

  • Chang, Zhenyue; Yan, Wenyi; Shang, Jin
  • Applied Physics Letters, Vol. 105, Issue 2
  • DOI: 10.1063/1.4890385

Intrinsic Piezoelectricity in Two-Dimensional Materials
journal, September 2012

  • Duerloo, Karel-Alexander N.; Ong, Mitchell T.; Reed, Evan J.
  • The Journal of Physical Chemistry Letters, Vol. 3, Issue 19
  • DOI: 10.1021/jz3012436

Using electrets to design concurrent magnetoelectricity and piezoelectricity in soft materials
journal, November 2014

  • Alameh, Zeinab; Deng, Qian; Liu, Liping
  • Journal of Materials Research, Vol. 30, Issue 1
  • DOI: 10.1557/jmr.2014.331

Piezoelectricity of single-atomic-layer MoS2 for energy conversion and piezotronics
journal, October 2014


ELATE: an open-source online application for analysis and visualization of elastic tensors
journal, May 2016

  • Gaillac, Romain; Pullumbi, Pluton; Coudert, François-Xavier
  • Journal of Physics: Condensed Matter, Vol. 28, Issue 27
  • DOI: 10.1088/0953-8984/28/27/275201

Recent Advances in Two-Dimensional Materials beyond Graphene
journal, October 2015


Ferroelectrets: Soft Electroactive Foams for Transducers
journal, February 2004

  • Bauer, Siegfried; Gerhard-Multhaupt, Reimund; Sessler, Gerhard M.
  • Physics Today, Vol. 57, Issue 2
  • DOI: 10.1063/1.1688068

Piezoelectricity in Two-Dimensional Materials
journal, February 2015


Two-dimensional atomic crystals
journal, July 2005

  • Novoselov, K. S.; Jiang, D.; Schedin, F.
  • Proceedings of the National Academy of Sciences, Vol. 102, Issue 30, p. 10451-10453
  • DOI: 10.1073/pnas.0502848102

Giant Piezoelectric Effects in Monolayer Group-V Binary Compounds with Honeycomb Phases: A First-Principles Prediction
journal, November 2017

  • Yin, Huabing; Gao, Jingwei; Zheng, Guang-Ping
  • The Journal of Physical Chemistry C, Vol. 121, Issue 45
  • DOI: 10.1021/acs.jpcc.7b08822

Recent Advances in Electromechanical Imaging on the Nanometer Scale: Polarization Dynamics in Ferroelectrics, Biopolymers, and Liquid Imaging
journal, September 2007

  • Kalinin, Sergei V.; Jesse, Stephen; Rodriguez, Brian J.
  • Japanese Journal of Applied Physics, Vol. 46, Issue 9A
  • DOI: 10.1143/JJAP.46.5674

A fast image simulation algorithm for scanning transmission electron microscopy
journal, May 2017


Tunable Out-of-Plane Piezoelectricity in Thin-Layered MoTe 2 by Surface Corrugation-Mediated Flexoelectricity
journal, July 2018

  • Kang, Seunghun; Jeon, Sera; Kim, Sera
  • ACS Applied Materials & Interfaces, Vol. 10, Issue 32
  • DOI: 10.1021/acsami.8b06325

Flexoelectricity in soft materials and biological membranes
journal, January 2014

  • Deng, Qian; Liu, Liping; Sharma, Pradeep
  • Journal of the Mechanics and Physics of Solids, Vol. 62
  • DOI: 10.1016/j.jmps.2013.09.021

Flexible large area ferroelectret sensors for location sensitive touchpads
journal, March 2008

  • Buchberger, Gerda; Schwödiauer, Reinhard; Bauer, Siegfried
  • Applied Physics Letters, Vol. 92, Issue 12
  • DOI: 10.1063/1.2903711

Multidirection Piezoelectricity in Mono- and Multilayered Hexagonal α-In 2 Se 3
journal, April 2018


The rise of graphene
journal, March 2007

  • Geim, A. K.; Novoselov, K. S.
  • Nature Materials, Vol. 6, Issue 3, p. 183-191
  • DOI: 10.1038/nmat1849

Atomic Defects in Two Dimensional Materials
journal, May 2015

  • Rasool, Haider I.; Ophus, Colin; Zettl, Alex
  • Advanced Materials, Vol. 27, Issue 38
  • DOI: 10.1002/adma.201500231

Raman spectroscopy of molybdenum oxides
journal, February 2002

  • Dieterle, M.; Mestl, G.
  • Physical Chemistry Chemical Physics, Vol. 4, Issue 5
  • DOI: 10.1039/b107046k

Designing soft pyroelectric and electrocaloric materials using electrets
journal, January 2019

  • Darbaniyan, Faezeh; Dayal, Kaushik; Liu, Liping
  • Soft Matter, Vol. 15, Issue 2
  • DOI: 10.1039/C8SM02003E

Black phosphorus field-effect transistors
journal, March 2014


Single-layer MoS2 transistors
journal, January 2011

  • Radisavljevic, B.; Radenovic, A.; Brivio, J.
  • Nature Nanotechnology, Vol. 6, Issue 3, p. 147-150
  • DOI: 10.1038/nnano.2010.279

Electrets in soft materials: Nonlinearity, size effects, and giant electromechanical coupling
journal, July 2014