Modulating the intralayer and interlayer valley excitons in WS2 through interaction with AlGaN

• Published in: Science China materials Vol. 66; no. 1; pp. 202 - 210
• Main Authors: Zeng, Xinlong, Kang, Wenyu, Zhou, Xiaowen, Li, Linglong, Xia, Yuanzheng, Liu, Haiyang, Yang, Chengbiao, Wu, Yaping, Wu, Zhiming, Li, Xu, Kang, Junyong
• Format: Journal Article
• Language: English
• Published: Beijing Science China Press 01.01.2023; Springer Nature B.V
• Subjects: Bilayers; Chemistry and Materials Science; Chemistry/Food Science; Coupling; Decay rate; Doping; Electron phonon interactions; Electron-hole interaction; Excitons; Interlayers; Materials Science; Monolayers; Polarization; Red shift; Scattering; Two dimensional materials; Valleys; interlayer exciton; valley polarization; WS; intralayer exciton; AlGaN

The fine-tuning of exciton transition and valley polarization process in two-dimensional materials have drawn tremendous research interest due to their rich valley-contrasting physics. Here, we demonstrate highly tunable exciton and valley characteristics in monolayer and bilayer WS 2 through coupli...