Impact of Channel Hot Electrons on Current Collapse in AlGaN/GaN HEMTs

This letter studies the current collapse phenomenon during switching in p-GaN gate AlGaN/GaN high-electron-mobility transistors. It is found that channel hot electrons play a major role in increasing the current collapse and that adding a field plate significantly reduces the effect. By stressing the device with OFF-state pulses of 100 μs× 10 μs with a VGS rise/fall time of 10 ns at Vdc 400 V, com...