نبذة مختصرة : 31 Paper submission number : 31 ; International audience ; This work investigates the initial electrical parameter drift in 150 nm gate-length GaN-on-SiC HEMTs subjected to DC high-temperature operating life stress for up to 96 hours at multiple baseplate temperatures. Junction temperature was estimated to assess the actual operating temperature of the device under stress conditions. A transient current IDS drift was observed, evolving differently with temperature. Electrical characterizations revealed threshold voltage shifts associated with trap dynamics. Drain-lag (DL) increased while gate-lag (GL) remained stable, indicating a dominant role of buffer traps over surface effects. Schottky diode analysis showed no significant gate degradation, suggesting that bulk-related trapping mechanisms are the main contributors to electrical shifts
No Comments.