论文部分内容阅读
We report on the temperature-dependent dc performance of AlGaN/GaN polarization doped Geld effect transistors(PolFETs).The rough decrements of drain current and transconductance with the operation temperature are observed.Compared with the conventional HFETs,the drain current drop of the PolFET is smaller.The transconductance drop of PolFETs at different gate biases shows different temperature dependences.From the aspect of the unique carrier behaviors of graded AlGaN/GaN heterostructure,we propose a quasi-multi-channel model to investigate the physics behind the temperature-dependent performance of AIGaN/GaN PoIFETs.
We report on the temperature-dependent dc performance of AlGaN / GaN polarization doped Geld effect transistors (PolFETs). The rough decrements of drain current and transconductance with the operation temperature are observed. Compared with the conventional HFETs, the drain current drop of the PolFETs is smaller.The transconductance drop of PolFETs at different gate biases shows different temperature dependences. From the aspect of the unique carrier behaviors of graded AlGaN / GaN heterostructure, we propose a quasi-multi-channel model to investigate the physics behind the temperature-dependent performance of AIGaN / GaN PoIFETs.