期刊
RSC ADVANCES
卷 9, 期 17, 页码 9678-9683出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/c9ra01163c
关键词
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资金
- New & Renewable Energy Core Technology Program of Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Ministry of Trade, Industry Energy, Korea [20172010104830]
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science and ICT [NRF-2017M1A2A2087351]
The narrow voltage swing of a nanoelectronic device limits its implementations in electronic circuits. Nanolayer -Ga2O3 has a superior breakdown field of approximately 8 MV cm(-1), making it an ideal candidate for a next-generation power device nanomaterial. In this study, a field modulating plate was introduced into a -Ga2O3 nano-field-effect transistor (nanoFET) to engineer the distribution of electric fields, wherein the off-state three-terminal breakdown voltage was reported to be 314 V. -Ga2O3 flakes were separated from a single-crystal bulk substrate using a mechanical exfoliation method. The layout of the field modulating plate was optimized through a device simulation to effectively distribute the peak electric fields. The field-plated -Ga2O3 nanoFETs exhibited n-type behaviors with a high output current saturation, exhibiting excellent switching characteristics with a threshold voltage of -3.8 V, a subthreshold swing of 101.3 mV dec(-1), and an on/off ratio greater than 10(7). The -Ga2O3 nanoFETs with a high breakdown voltage of over 300 V could pave a way for downsizing power electronic devices, enabling the economization of power systems.
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