Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad
The transport properties of electronic devices fabricated using two-dimensional materials are severely affected by the Schottky barrier at the contact of an electrode. The Schottky barrier height exhibits a strong correlation with the work function of the electrode. We observed rectifying current–vo...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2019-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.5108541 |
| _version_ | 1818026612859338752 |
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| author | Yoshihiro Shimazu Tatsuya Iwabuchi Kensuke Arai |
| author_facet | Yoshihiro Shimazu Tatsuya Iwabuchi Kensuke Arai |
| author_sort | Yoshihiro Shimazu |
| collection | DOAJ |
| description | The transport properties of electronic devices fabricated using two-dimensional materials are severely affected by the Schottky barrier at the contact of an electrode. The Schottky barrier height exhibits a strong correlation with the work function of the electrode. We observed rectifying current–voltage characteristics for a back-gated field effect transistor with a channel of molybdenum disulfide and Al electrodes, where one of the electrodes is attached to a Au pad. This result is explained in terms of the increase in the effective work function of the Al electrode attached to the Au pad. The dependence of a photocurrent on the bias voltage exhibited an opposite tendency to the current–voltage characteristics; this is also attributed to the work function modulation of the electrode, thus resulting in the variation in the Schottky barrier height. |
| first_indexed | 2024-12-10T04:34:47Z |
| format | Article |
| id | doaj.art-07a5f138e1cf4a1f824401e4c3f54b95 |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-10T04:34:47Z |
| publishDate | 2019-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-07a5f138e1cf4a1f824401e4c3f54b952022-12-22T02:02:02ZengAIP Publishing LLCAIP Advances2158-32262019-08-0198085118085118-510.1063/1.5108541078908ADVWork function modulation of electrodes contacted to molybdenum disulfide using an attached metal padYoshihiro Shimazu0Tatsuya Iwabuchi1Kensuke Arai2Department of Physics, Yokohama National University, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Yokohama 240-8501, JapanDepartment of Physics, Yokohama National University, Yokohama 240-8501, JapanThe transport properties of electronic devices fabricated using two-dimensional materials are severely affected by the Schottky barrier at the contact of an electrode. The Schottky barrier height exhibits a strong correlation with the work function of the electrode. We observed rectifying current–voltage characteristics for a back-gated field effect transistor with a channel of molybdenum disulfide and Al electrodes, where one of the electrodes is attached to a Au pad. This result is explained in terms of the increase in the effective work function of the Al electrode attached to the Au pad. The dependence of a photocurrent on the bias voltage exhibited an opposite tendency to the current–voltage characteristics; this is also attributed to the work function modulation of the electrode, thus resulting in the variation in the Schottky barrier height.http://dx.doi.org/10.1063/1.5108541 |
| spellingShingle | Yoshihiro Shimazu Tatsuya Iwabuchi Kensuke Arai Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad AIP Advances |
| title | Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| title_full | Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| title_fullStr | Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| title_full_unstemmed | Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| title_short | Work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| title_sort | work function modulation of electrodes contacted to molybdenum disulfide using an attached metal pad |
| url | http://dx.doi.org/10.1063/1.5108541 |
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