Experimental evaluation of interface states during time-dependent dielectric breakdown of GaN-based MIS-HEMTs with LPCVD-SiNx gate dielectric |
(a) Double sweep C–V curves at test point t = 0 s, 10 s, 5500 s. Panel (b) is the increment of traps density estimated by frequency conductance method and the voltage hysteresis of double C–V curves, separately. |