Author:
Oishi Toshiyuki,Takada Shiori,Kudara Ken,Yamaguchi Yutaro,Shinjo Shintaro,Yamanaka Koji
Abstract
Abstract
The drain bias dependence of Y
22 and Y
21 signals has been investigated by two-port network measurement in the on-state condition of AlGaN/GaN high electron mobility transistors. Y
22 has signals for Fe-related traps in GaN layers and the self-heating effect. The Y
21 signal is unique among signals with the same drain bias dependence as Y
22 signals. This unique signal is considered to originate from AlGaN traps, using device simulation with a GaN trap, AlGaN trap and the self-heating effect. The peak frequency of GaN and AlGaN traps increases with increasing drain voltage, while the peak frequency of self-heating does not depend on the drain voltage.
Funder
Japan Society for the Promotion of Science
Subject
General Physics and Astronomy,General Engineering