Parasitic source resistance at different temperatures for AlGaN/AlN/GaN heterostructure field-effect transistors

Liu Yan¹, Lin Zhao-Jun^{1, †}, Lv Yuan-Jie², Cui Peng¹, Fu Chen¹, Han Ruilong¹, Huo Yu¹, Yang Ming¹

(color online) Schematic of polarization charges distribution. (a) Distribution of polarization charges with the Ohmic and Schottky contact metals. (b) Distribution of polarization charges without the contact metals. (c) Distribution of the additional polarization charge density. +: Positive polarization charges; —: Negative polarization charges; Ө: Two-dimensional electron gas electrons.