中国物理B ›› 2025, Vol. 34 ›› Issue (6): 67302-067302.doi: 10.1088/1674-1056/adc6f4
Tingting Wei(韦婷婷)1, Jinling Yu(俞金玲)1,†, Zhu Diao4, Zhaonan Li(李兆男)5, Shuying Cheng(程树英)1, Yunfeng Lai(赖云锋)1, Yonghai Chen(陈涌海)2,3, and Chao Zhao(赵超)2,3
Tingting Wei(韦婷婷)1, Jinling Yu(俞金玲)1,†, Zhu Diao4, Zhaonan Li(李兆男)5, Shuying Cheng(程树英)1, Yunfeng Lai(赖云锋)1, Yonghai Chen(陈涌海)2,3, and Chao Zhao(赵超)2,3
摘要: The in-plane optical anisotropy (IPOA) of $c$-plane InGaN/GaN quantum disks (Qdisks) in nanowires grown on MoS$_2$/Mo and Ti/Mo substrates is investigated using reflectance difference spectroscopy (RDS) at room temperature. A large IPOA related to defect or impurity states is observed. The IPOA of samples grown on MoS$_2$/Mo is approximately one order of magnitude larger than that of samples grown on Ti/Mo substrates. Numerical calculations based on the envelope function approximation have been performed to analyze the origin of the IPOA. It is found that the IPOA primarily results from the segregation of indium atoms in the InGaN/GaN Qdisks. This work highlights the significant influence of substrate materials on the IPOA of semiconductor heterostructures.
中图分类号: (Quantum wells)