Impact of gate insulator on the dc and dynamic performance of AlGaN/GaN MIS-HEMTs
The impact of SiN gate insulator on the performance of AlGaN/GaN MIS-HEMTs is studied. Lower gate leakage and trapping effects are measured in PEALD SiN devices. Measurable threshold voltage shift is measured when positive gate bias is applied. Threshold voltage dynamic shift is well correlated with gate leakage current. Trapping effects studied are mainly due to electrons injected in the gate insulator.
gate insulator gan mis-hemts trapping effects