| CONDENSED MATTER: ELECTRONIC STRUCTURE, ELECTRICAL, MAGNETIC, AND OPTICAL PROPERTIES |
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Fabrication and Characterization of a Single Electron Transistor Based on a Silicon-on-Insulator |
| SU Li-Na1,2, LV Li2, LI Xin-Xing2, QIN Hua2, GU Xiao-Feng1** |
1Key Laboratory of Advanced Process Control for Light Industry (Ministry of Education), Department of Electronic Engineering, Jiangnan University, Wuxi 214122
2Key Laboratory of Nanodevices and Applications, Suzhou Institute of Nano-tech and Nano-bionics, Chinese Academy of Sciences, Suzhou 215123
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| Cite this article: |
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SU Li-Na, LV Li, LI Xin-Xing et al 2015 Chin. Phys. Lett. 32 047301 |
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Abstract A single electron transistor based on a silicon-on-insulator is successfully fabricated with electron-beam nanolithography, inductively coupled plasma etching, thermal oxidation and other techniques. The unique design of the pattern inversion is used, and the pattern is transferred to be negative in the electron-beam lithography step. The oxidation process is used to form the silicon oxide tunneling barriers, and to further reduce the effective size of the quantum dot. Combinations of these methods offer advantages of good size controllability and accuracy, high reproducibility, low cost, large-area contacts, allowing batch fabrication of single electron transistors and good integration with a radio-frequency tank circuit. The fabricated single electron transistor with a quantum dot about 50 nm in diameter is demonstrated to operate at temperatures up to 70 K. The charging energy of the Coulomb island is about 12.5 meV.
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Received: 25 November 2014
Published: 30 April 2015
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| PACS: |
73.63.-b
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(Electronic transport in nanoscale materials and structures)
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73.43.Jn
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(Tunneling)
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73.63.Kv
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(Quantum dots)
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