Abstract

Transition-metal dichalcogenides (TMDCs), as emerging optoelectronic materials, necessitate the establishment of an experimentally viable system to study their interaction with light. In this study, we propose and analyze a WS₂/PMMA/Ag planar Fabry–Perot (F–P) cavity, enabling the direct experimental measurement of WS₂ absorbance. By optimizing the structure, the absorbance of A exciton of WS₂ up to 0.546 can be experimentally achieved, which matches well with the theoretical calculations. Through temperature and thermal expansion strain induced by temperature, the absorbance of the A exciton can be tuned in situ. Furthermore, temperature-dependent photocurrent measurements confirmed the consistent absorbance of the A exciton under varying temperatures. This WS₂/PMMA/Ag planar structure provides a straightforward and practical platform for investigating light interaction in TMDCs, laying a solid foundation for future developments of TMDC-based optoelectronic devices.

© 2024 Optica Publishing Group

Strong light–matter interactions of exciton in bulk WS₂ and a toroidal dipole resonance

Shaojun You, Ying Zhang, Menghui Fan, Shengyun Luo, and Chaobiao Zhou
Opt. Lett. 48(6) 1530-1533 (2023)

Realization of strong coupling between 2D excitons and cavity photons at room temperature

Xinchao Zhao, Yanhong Yan, Zhuangzhuang Cui, Feng Liu, Shaowei Wang, Liaoxin Sun, Yuwei Chen, and Wei Lu
Opt. Lett. 45(24) 6571-6574 (2020)

Hybrid coupling enhances photoluminescence of monolayer MoS₂ on plasmonic nanostructures

Wen-Bo Shi, Lei Zhang, Di Wang, Rui-Li Zhang, Yingying Zhu, Li-Heng Zhang, Ruwen Peng, Wenzhong Bao, Ren-Hao Fan, and Mu Wang
Opt. Lett. 43(17) 4128-4131 (2018)

High-temperature strain sensor based on sapphire fiber Bragg grating

Jun He, Zhuoda Li, Xizhen Xu, Qingming Tan, Xiaoyu Weng, Liwei Liu, Junle Qu, Changrui Liao, and Yiping Wang
Opt. Lett. 49(3) 446-449 (2024)

Sensitivity-enhanced strain sensor based on a shape-modulated multimode fiber

Zhiyuan Zhao, Xinruo Li, Shihao Yan, Ke Tian, Xin Wang, Haiyan Zhao, Elfed Lewis, Gerald Farrell, and Pengfei Wang
Opt. Lett. 49(5) 1329-1332 (2024)