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AlGaN/GaN high‐electron‐mobility transistors (HEMTs) have been extensively applied for high power applications at high frequencies. To further improve the device performance, field plates and passivation layers are commonly integrated with the device technology. This paper is to investigate the effects of surface passivation thickness on the electrical performance of AlGaN/GaN HEMTs with slant field...
We have investigated the effects of surface passivation thickness on the electrical performance of Al-GaN/GaN HEMTs with slant field plates. It is found that the existence of the silicon nitride passivation layer helps to improve the DC characteristics of the devices in terms of the lower drain current collapse, higher maximum DC transconductance, and higher maximum drain current. RF wise, the devices...
In this work, AlGaN/GaN HEMTs on silicon with slant field plate have been successfully fabricated using deep-UV lithography. By using an angle exposure technique, submicron T-shaped gates with slant sidewalls were achieved. The 0.6 × 100μm2 slant-field-plated AlGaN/GaN HEMT on silicon substrate exhibited a peak value of transconductance of 214 mS/mm and a breakdown voltage of 122 V. Through high-frequency...
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