Plasmonically enhanced photoluminescence of monolayer MoS <sub>2</sub> via nanosphere lithography‐templated gold metasurfaces
Zhenming Wang, Jianxun Liu, Xiaoguo Fang, Jiawei Wang, Zhen Yin, Huilin He, Shouzhen Jiang, Meng Zhao, Zongyou Yin, Dan Luo, Perry Ping Shum, Yan Jun Liu
Abstract
Abstract We demonstrate a simple, cost‐effective method to enhance the photoluminescence intensity of monolayer MoS 2 . A hexagonal symmetric Au metasurface, made by polystyrene nanosphere lithography and metal coating, is developed to enhance the photoluminescence intensity of monolayer MoS 2 . By using nanospheres of different sizes, the localized surface plasmon resonances of the Au metasurfaces can be effectively tuned. By transferring monolayer MoS 2 onto the Au metasurface, the photoluminescence signal of the monolayer MoS 2 can be significantly enhanced up to 12‐fold over a square‐centimeter area. The simple, large‐area, cost‐effective fabrication technique could pave a new way for plasmon‐enhanced light‐mater interactions of atomically thin two‐dimensional materials.