Jinglin Tang, Yaolong Li, Sheng Ye, Pengzuo Jiang, Zhaohang Xue, Xiaofang Li, Xiaying Lyu, Qinyun Liu, Saisai Chu, Hong Yang, Chengyin Wu, Xiaoyong Hu, Yunan Gao, Shufeng Wang, Quan Sun, Guowei Lu, Qihuang Gong
Plasmon-induced hot-electron transfer at the metallic nanoparticle/semiconductor interface is the basis of plasmon-enhanced photocatalysis and energy harvesting. However, limited by the nanoscale size of hot spots and femtosecond time scale of hot-electron transfer, direct observation is still challenging. Herein, by using spatiotemporal-resolved photoemission electron microscopy with a two-color pump-probe beamline, we directly observed such a process with a concise system, the Au nanoparticle/monolayer transition-metal dichalcogenide (TMD) interface...
February 20, 2024: Nano Letters