This title appears in the Scientific Report :
2013
Please use the identifier:
http://dx.doi.org/10.7567/JJAP.52.08JN02 in citations.
Enhancement-Mode LaLuO3–AlGaN/GaN Metal–Insulator–Semiconductor High-Electron-Mobility Transistors Using Fluorine Plasma Ion Implantation
Enhancement-Mode LaLuO3–AlGaN/GaN Metal–Insulator–Semiconductor High-Electron-Mobility Transistors Using Fluorine Plasma Ion Implantation
In this work, enhancement-mode (E-mode) AlGaN/GaN metal–insulator–semiconductor high-electron-mobility transistors (MIS-HEMTs) with high-κ LaLuO3 (LLO) gate dielectric were fabricated by deploying the CF4 plasma treatment technique in a gate-dielectric-first planar process. CF4 plasma treatment can...
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Personal Name(s): | Yang, Shu (Corresponding author) |
---|---|
Huang, Sen / Schnee, Michael / Zhao, Qing-Tai / Schubert, Jürgen / Chen, Kevin J. | |
Contributing Institute: |
Elektronische Eigenschaften; PGI-6 Jülich-Aachen Research Alliance - Fundamentals of Future Information Technology; JARA-FIT Halbleiter-Nanoelektronik; PGI-9 |
Published in: | Japanese journal of applied physics, 52 (2013) S. 08JN02 - |
Imprint: |
Tokyo
Inst. of Pure and Applied Physics
2013
|
DOI: |
10.7567/JJAP.52.08JN02 |
Document Type: |
Journal Article |
Research Program: |
Frontiers of charge based Electronics |
Publikationsportal JuSER |
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245 | |a Enhancement-Mode LaLuO3–AlGaN/GaN Metal–Insulator–Semiconductor High-Electron-Mobility Transistors Using Fluorine Plasma Ion Implantation | ||
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520 | |a In this work, enhancement-mode (E-mode) AlGaN/GaN metal–insulator–semiconductor high-electron-mobility transistors (MIS-HEMTs) with high-κ LaLuO3 (LLO) gate dielectric were fabricated by deploying the CF4 plasma treatment technique in a gate-dielectric-first planar process. CF4 plasma treatment can shift the threshold voltage from -2.3 V [for depletion-mode (D-mode) LLO MIS-HEMTs] to 0.6 V (for E-mode LLO MIS-HEMTs). Transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) results suggest that fluorine ions could penetrate through the polycrystalline/amorphous LLO film and be implanted into the (Al)GaN barrier layer. The primary threshold voltage (VTH) shift mechanism of the E-mode LLO MIS-HEMTs is the negatively-charged fluorine ions in (Al)GaN, while fluorine atoms form chemical bonds with La/Lu atoms in the fluorinated LLO film. The E-mode LLO MIS-HEMTs exhibit a drive drain current density of 352 mA/mm at VGS = 2.5 V and a peak transconductance (Gm) of ∼193 mS/mm. Significant suppression of current collapse and low dynamic ON-resistance are obtained in the E-mode LLO MIS-HEMTs under high-drain-bias switching conditions. | ||
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