Degradation of AlGaN/GaN HEMT devices: Role of reverse-bias and hot electron stress
We provide give an overview on the most common degradation processes of GaN-based HEMTs. We describe the time-dependence of gate degradation mechanism during off-state tests. The influence of the reverse voltage as degradation accelerating factor is also provided. We present a combined electrical, thermal and EL analysis of hot electrons degradation. We define a methodology for the evaluation hot electrons effects.
degradation hemt gallium nitride reliability charge trapping