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Numerical and Compact Field Effect Transistor Models Validated for Terahertz Detection
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| 자료유형 | 학위논문 |
|---|---|
| 서명/저자사항 | Numerical and Compact Field Effect Transistor Models Validated for Terahertz Detection. |
| 개인저자 | Liu, Xueqing. |
| 단체저자명 | Rensselaer Polytechnic Institute. Electrical Engineering. |
| 발행사항 | [S.l.]: Rensselaer Polytechnic Institute., 2019. |
| 발행사항 | Ann Arbor: ProQuest Dissertations & Theses, 2019. |
| 형태사항 | 101 p. |
| 기본자료 저록 | Dissertations Abstracts International 81-02B. Dissertation Abstract International |
| ISBN | 9781085558266 |
| 학위논문주기 | Thesis (Ph.D.)--Rensselaer Polytechnic Institute, 2019. |
| 일반주기 |
Source: Dissertations Abstracts International, Volume: 81-02, Section: B.
Advisor: Shur, Michael S. |
| 이용제한사항 | This item must not be sold to any third party vendors. |
| 요약 | TeraFETs, plasmonic field effect transistors (FETs) operating in the terahertz (THz) frequency range, have found applications as sub millimeter-wave and THz components for THz detection, mixing, imaging, etc. Responsivity is a critical parameter for TeraFETs and deserves the investigation and improvement for the advancement of high performance TeraFET detectors. Compact and numerical device models have an essential role in enabling applications for semiconductor-based terahertz technologies. Thus, it is of extreme value to the scientific community to develop effective and efficient models to propel the research and applications for the TeraFETs.In this thesis, we have developed numerical models for TeraFET detectors in Synopsys Sentaurus TCAD. The model is valid over a wide dynamic input range (from around 5 mV to 6 V). By examining the physical mechanisms in such TCAD models, experimentally-observed saturation effect at high intensity levels (above 1 V) can be understood. The effect is associated with different mechanisms depending on the material system including leakage current, velocity saturation, and avalanche effect. We also developed a compact SPICE model for heterostructure FET (HFET) THz detectors valid over a wide dynamic range (from around 1 mV to 7 V). The model incorporates the saturation effect at high intensity levels (above 1 V) by including leakage components. Furthermore, resonant detection for submicron high mobility devices are observed by including Drude inductance. The developed SPICE-compatible models for TeraFET detectors include channel segmentation and Drude inductance, and are valid from 0.1 THz to 10 THz. The developed model also show the significance of electron inertia at high THz frequencies for long channel devices. All developed models show good agreement with the analytical theory and experimental data and could be effectively used for the simulation, design, and characterization of sub-millimeter wave and Terahertz wave devices and integrated circuits. |
| 일반주제명 | Electrical engineering. Applied physics. Nanotechnology. |
| 언어 | 영어 |
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