激子
异质结
光致发光
极化(电化学)
偶极子
光谱学
材料科学
凝聚态物理
谱线
激光器
物理
光电子学
光学
化学
物理化学
量子力学
天文
作者
Lijun Wu,Cuihuan Ge,Kai Braun,Mai He,Siman Liu,Qingjun Tong,Xiao Wang,Anlian Pan
出处
期刊:Chinese Physics B
[IOP Publishing]
日期:2021-08-01
卷期号:30 (8): 087802-087802
被引量:1
标识
DOI:10.1088/1674-1056/abf3b6
摘要
Due to the large exciton binding energy, two-dimensional (2D) transition metal dichalcogenides (TMDCs) provide an ideal platform for studying excitonic states and related photonics and optoelectronics. Polarization states lead to distinct light-matter interactions which are of great importance for device applications. In this work, we study polarized photoluminescence spectra from intralayer exciton and indirect exciton in WS 2 and WSe 2 atomic layers, and interlayer exciton in WS 2 /WSe 2 heterostructures by radially and azimuthally polarized cylindrical vector laser beams. We demonstrated the same in-plane and out-of-plane polarization behavior from the intralayer and indirect exciton. Moreover, with these two laser modes, we obtained interlayer exciton in WS 2 /WSe 2 heterostructures with stronger out-of-plane polarization, due to the formation of vertical electric dipole moment.
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