Observation of forbidden phonons, Fano resonance and dark excitons by resonance Raman scattering in few-layer WS2

• Main Authors: Tan, Qing-Hai, Sun, Yu-Jia, Liu, Xue-Lu, Zhao, Yanyuan, Xiong, Qihua, Tan, Ping-Heng, Zhang, Jun
• Other Authors: School of Physical and Mathematical Sciences
• Format: Article
• Language: English
• Published: 2020
• Subjects: Science::Physics; Resonant Raman Scattering; WS2
• Online Access: https://hdl.handle.net/10356/140432
• Institution: Nanyang Technological University

The optical properties of the two-dimensional (2D) crystals are dominated by tightly bound electron–hole pairs (excitons) and lattice vibration modes (phonons). The exciton-phonon interaction is fundamentally important to understand the optical properties of 2D materials and thus helps to develop em...