Sidegating-Induced Negative Differential Resistance in MBE-Grown InAs/AlSb HFETs.
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- Bolognesi Colombo R.
- School of Engineering Science Physics Department, Compound Semiconductor Device Laboratory, Simon Fraser University, Burnaby, British Columbia, Canada, V5A 1S6
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- Dvorak Martin W.
- School of Engineering Science
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- Chow David H.
- Hughes Research Laboratories, 3011 Malibu Canyon Road, Malibu, CA 90265, USA
書誌事項
- タイトル別名
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- Sidegating-Induced Negative Differentia
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We report sidegating measurements on mesa-isolated InAs/AlSb-based heterojunction field effect transistors (HFETs) grown on GaAs semi-insulating substrates with thick strain-relaxed AlSb buffer layers. We find that the AlGaSb/AlSb buffer layers provide adequate inter-device isolation for low sidegate voltages |V SG|<5 V. For sidegate electrode voltages of ± 20 V, the substrate leakage current remains lower than 100 nA for a sidegate separation of only 4 µ m from the active channel. For large positive sidegate voltages, a marked sidegating-induced negative differential resistance (SINDR) appears in the drain characteristics. The peculiar frequency and temperature dependencies of the SINDR effect indicate that the negative differential resistance is caused by a transient occupation of deep level centers by holes injected into the buffer layers from the sidegate electrode. In contrast, large negative sidegate voltages have a negligible impact on the HFET drain characteristics. The present results illustrate the importance of buffer layers in InAs/AlSb HFETs and call for a deep level transient spectroscopy characterization of deep centers in InAs/AlSb HFET buffer layers.
収録刊行物
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- Japanese Journal of Applied Physics
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Japanese Journal of Applied Physics 36 (3B), 1789-1794, 1997
The Japan Society of Applied Physics
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詳細情報 詳細情報について
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- CRID
- 1390001206247735424
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- NII論文ID
- 110003946887
- 130004523470
- 210000040863
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- NII書誌ID
- AA10457675
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- ISSN
- 13474065
- 00214922
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- NDL書誌ID
- 4196712
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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