Wen Bao-Ying, Wang Jing-Yu, Shen Tai-Long, Zhu Zhen-Wei, Guan Peng-Cheng, Lin Jia-Sheng, Peng Wei, Cai Wei-Wei, Jin Huaizhou, Xu Qing-Chi, Yang Zhi-Lin, Tian Zhong-Qun, Li Jian-Feng
Department of Physics, State Key Laboratory of Physical Chemistry of Solid Surfaces, College of Chemistry and Chemical Engineering, Xiamen University, Xiamen, 361005, China.
Innovation Laboratory for Sciences and Technologies of Energy Materials of Fujian Province (IKKEM), Xiamen, 361005, China.
Light Sci Appl. 2022 Jul 26;11(1):235. doi: 10.1038/s41377-022-00918-1.
The light-matter interaction between plasmonic nanocavity and exciton at the sub-diffraction limit is a central research field in nanophotonics. Here, we demonstrated the vertical distribution of the light-matter interactions at ~1 nm spatial resolution by coupling A excitons of MoS and gap-mode plasmonic nanocavities. Moreover, we observed the significant photoluminescence (PL) enhancement factor reaching up to 2800 times, which is attributed to the Purcell effect and large local density of states in gap-mode plasmonic nanocavities. Meanwhile, the theoretical calculations are well reproduced and support the experimental results.
等离子体纳米腔与亚衍射极限下的激子之间的光与物质相互作用是纳米光子学中的一个核心研究领域。在此，我们通过耦合二硫化钼的A激子与间隙模式等离子体纳米腔，展示了在约1纳米空间分辨率下光与物质相互作用的垂直分布。此外，我们观察到显著的光致发光（PL）增强因子高达2800倍，这归因于珀塞尔效应和间隙模式等离子体纳米腔中的大局部态密度。同时，理论计算结果与实验结果吻合良好并支持了实验结果。
