Abstract
In this paper, the electrical performances for of vertical GaN junctionless metal–oxide–semiconductor-field-effect-transistors based on GaN substrate were investigated to improve the device characteristics. To improve the breakdown voltage (BV), the optimization process is performed using two-dimensional simulation technology computer-aided design. Because BV is strongly affected by the undoped GaN drift layer, gate length, and fin width, and it should be designed in views of them. The optimized device has 30.63 kA/cm2 of the on-state drain current density 30.63 kA/cm2 and 2,009 V of BV. As a result, the device characteristics for high-power and high-voltage applications can be further improved through the optimization and characterization used in this paper.
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Acknowledgements
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. NRF-2020R1A2C1005087). This study was supported by the BK21 FOUR project funded by the Ministry of Education, Korea (4199990113966). This research was supported by Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2021R1A6A3A13039927). This research was supported by National R&D Program through the National Research Foundation of Korea (NRF) funded by Ministry of Science and ICT (2021M3F3A2A03017764). This investigation was financially supported by Semiconductor Industry Collaborative Project between Kyungpook National University and Samsung Electronics Co. Ltd. The EDA tool was supported by the IC Design Education Center (IDEC), Korea.
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An, H.D., Lee, S.H., Park, J. et al. Analysis and Optimization for Characteristics of Vertical GaN Junctionless MOSFETs Depending on Specifications of GaN Substrates. J. Electr. Eng. Technol. 17, 3487–3498 (2022). https://doi.org/10.1007/s42835-022-01122-2
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DOI: https://doi.org/10.1007/s42835-022-01122-2