期刊
IEEE ELECTRON DEVICE LETTERS
卷 41, 期 1, 页码 111-114出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LED.2019.2953693
关键词
Diamond; MOSFET; vertical-type device
资金
- JSPS [JP26220903]
- Creation of Life Innovation Materials for Interdisciplinary and International Researcher Development
We present a miniaturized vertical-type two-dimensional hole gas (2DHG) diamond metal-oxide-semiconductor field-effect transistor (MOSFET) by adopting a gate-source overlapping structure. We developed a 2-mu m-wide trench and disposed a part of the gate electrode to overlap the Al2O3 insulator film on the source electrode to eliminate the space between source and gate electrode. We obtained the maximum drain current density of I-D = 12800 A/cm(2) at V-DS = -50 V and the specific on-resistance of R-ON = 3.2 mcm(2) at V-DS = -10 V and confirmed their improvement by the miniaturization of devices and reduction of source to gate resistance. In addition, the drain current on/off ratio was 7 orders magnitude even at 200 degrees C with the formation of a highly concentrated, thick nitrogen-doped layer as the current blocking layer.
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