Investigation into the Energy Band Diagram and Charge Distribution in AlGaN/GaN Double Heterostructures by Self-Consistent Poisson--Schrödinger Calculations
JI Xiao-Li, CHEN Fan, JIANG Ruo-Lian, ZHOU Jian-Jun, WEN Bo, HAN Ping, XIE Zi-Li, ZHANG Rong, ZHENG You-Dou
Department of Physics and Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials Science and Technology, Nanjin University, Nanjing 210093
Investigation into the Energy Band Diagram and Charge Distribution in AlGaN/GaN Double Heterostructures by Self-Consistent Poisson--Schrödinger Calculations
JI Xiao-Li;CHEN Fan;JIANG Ruo-Lian;ZHOU Jian-Jun;WEN Bo;HAN Ping;XIE Zi-Li;ZHANG Rong;ZHENG You-Dou
Department of Physics and Jiangsu Provincial Key Laboratory of Photonic and Electronic Materials Science and Technology, Nanjin University, Nanjing 210093
Abstract： The energy band diagram and charge distribution of the unintentional doped AlGaN/GaN/AlGaN/GaN double heterostructure were obtained by self-consistent Poisson--Schrödinger calculations. The severe band tilting and high two-dimensional electron gas (2DEG) density mainly attribute to the large internal polarization intensity, which is close to a linear function of Al composition. The influence of Al composition is investigated. The results show that band tilting enlarges and 2DEG gains with Al composition, and two-dimensional hole gas occurs when Al composition reaches a certain extent. The influence of Al composition and two-dimensional hole gas (2DHG) on devices is discussed.
JI Xiao-Li;CHEN Fan;JIANG Ruo-Lian;ZHOU Jian-Jun;WEN Bo;HAN Ping;XIE Zi-Li;ZHANG Rong;ZHENG You-Dou. Investigation into the Energy Band Diagram and Charge Distribution in AlGaN/GaN Double Heterostructures by Self-Consistent Poisson--Schrödinger Calculations[J]. 中国物理快报, 2005, 22(2): 454-456.
JI Xiao-Li, CHEN Fan, JIANG Ruo-Lian, ZHOU Jian-Jun, WEN Bo, HAN Ping, XIE Zi-Li, ZHANG Rong, ZHENG You-Dou. Investigation into the Energy Band Diagram and Charge Distribution in AlGaN/GaN Double Heterostructures by Self-Consistent Poisson--Schrödinger Calculations. Chin. Phys. Lett., 2005, 22(2): 454-456.
2005, Vol. 22 
