| Autor: |
Jena, Devika, Das, Sanghamitra, Dash, Taraprasanna |
| Předmět: |
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| Zdroj: |
IETE Journal of Research; Jun2024, Vol. 70 Issue 6, p5849-5857, 9p |
| Abstrakt: |
GaN-based vertical superjunction high electron mobility transistors (HEMT) are recent avenues for power transistors. In this work, an enhancement mode vertical superjunction GaN-HEMT with gradient doping (GDP-SJ HEMT) is proposed and analyzed. In the GDP-SJ HEMT, the n-pillar doping concentration increases in a gradient manner from top to bottom. Whereas the concentration of the p-pillar is uniform and equivalent to the doping of the middle of the n-pillar. By optimizing the device design and doping profile, the specific-on resistance (Ron,sp) of the device has been reduced from 5.0 mΩ-cm2 to 3.79 mΩ-cm2. To the best of our knowledge, the frequency performance of vertical SJ HEMT has not been documented in the literature. As a result, we also performed a frequency study. The cut-off frequency (fT) of the proposed device is 78 MHz and the maximum frequency (fMAX) is 71 MHz. The device optimization increases the fT by 89% i.e. 148 MHz and fMAX by 67% i.e. 119 MHz. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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