Analysis of PTCDA/ITO Surface and Interface Using X-ray Photoelectron Spectroscopy and Atomic Force Microscopy

Tang Ning; Shen Bo; Wang Maojun; Yang Zhijian; Xu Ke; Zhang Guoyi; Gui Yongsheng; Zhu Bo; Guo Shaoling; Chu Junhao

Abstract: Magnetotransport properties of two-dimensional electron gases (2DEG) in Al_xGa_1-xN/GaN heterostructures with different Al compositions are investigated by magnetotransport measurements at low temperatures and in high magnetic fields.It is found that heterostructures with a lower Al composition in the barrier have lower 2DEG concentration and higher 2DEG mobility.

Key words: Al_xGa_1-xN/GaN heterostructure, two-dimensional electron gas, transport property

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