Journal article

Negative electro-conductance in Suspended 2D WS2 nanoscale devices.

Abstract:: We study the in-situ electro-conductance in nanoscale electronic devices composed of suspended monolayer 2D WS2 with metal electrodes inside an aberration-corrected transmission electron microscope. Monitoring the conductance changes when the device is exposed to the electron beam with 80keV energy reveals a decrease in conductivity with increasing beam current density. The response time of the electro-conductance when exposed to the electron beam is substantially faster than the recovery time when the beam is turned off. We proposed a charge trap model that accounts for excitation of electrons into the conduction band and localized trap states from energy supplied by inelastic scattering of incident 80keV electrons. These results show how monolayer transition metal dichalcogenide 2D semiconductors can be used as transparent direct electron detectors in ultrathin nanoscale devices.

Publication status:: Published

Peer review status:: Peer reviewed

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APA Style

Fan, Y., Robertson, A., Zhang, X., Tweedie, M., Zhou, Y., Rummeli, M., Zheng, H., & Warner, J. (2016). Negative electro-conductance in Suspended 2D WS2 nanoscale devices. ACS Applied Materials and Interfaces, 8(48), 32963–32970.

MLA Style

Fan, Y., et al. “Negative Electro-Conductance in Suspended 2D WS2 Nanoscale Devices.” ACS Applied Materials and Interfaces, vol. 8, no. 48, American Chemical Society, 2016, pp. 32963–70.

Chicago Style

Fan, Y, A Robertson, X Zhang, M Tweedie, Y Zhou, M Rummeli, H Zheng, and J Warner. 2016. “Negative Electro-Conductance in Suspended 2D WS2 Nanoscale Devices.” ACS Applied Materials and Interfaces 8 (48): 32963–70.
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Files:: Warner et al, Negative electro-conductance in Suspended 2D WS2...

(Preview, Accepted manuscript, pdf, 1.7MB, Terms of use)

Publisher copy:: 10.1021/acsami.6b11480

Authors

+ Fan, Y More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

+ Robertson, A More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

+ Zhang, X More by this author

Role:: Author

+ Tweedie, M More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

+ Zhou, Y More by this author

Institution:: University of Oxford
Division:: MPLS
Department:: Materials
Role:: Author

More authors...

+ University of Oxford More from this funder

Funding agency for:: Fan, Y
Grant:: Clarendon Scholarship

+ Royal Society More from this funder

Funding agency for:: Warner, J

Publisher:: American Chemical Society
Journal:: ACS Applied Materials and Interfaces More from this journal
Volume:: 8
Issue:: 48
Pages:: 32963-32970
Publication date:: 2016-11-01
Acceptance date:: 2016-11-16
DOI:: 10.1021/acsami.6b11480
EISSN:: 1944-8252
ISSN:: 1944-8244

Language:: English
Keywords:: electro-conductance

2D

in situ

TEM

WS2
Pubs id:: pubs:665021
UUID:: uuid:15b36f87-56c6-4781-a8a0-a9a4592facd7
Local pid:: pubs:665021
Source identifiers:: 665021
Deposit date:: 2017-01-23

Terms of use

Copyright holder:: American Chemical Society
Copyright date:: 2016
Notes:: Copyright © 2016 American Chemical Society

Licence:: CC Attribution-NonCommercial-NoDerivatives (CC BY-NC-ND)

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