Affiliation:
1. CAS Key Laboratory of Nanosystem and Hierarchical Fabrication CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 P. R. China
2. University of Chinese Academy of Sciences Beijing 100049 P. R. China
3. CAS Key Laboratory of Standardization and Measurement for Nanotechnology CAS Center for Excellence in Nanoscience National Center for Nanoscience and Technology Beijing 100190 P. R. China
Abstract
AbstractHeterostructured transition metal dichalcogenides (TMDs) have received much attention due to their tunable optical and electronic properties. Here, a strategy for facile fabrication of porous anodic alumina (PAA) membrane‐supported monolayer molybdenum disulfide (MoS2) is described. PAA is either empty or filled with gold nanoparticles (AuNPs). Such nanopore/nanosphere‐supported MoS2 (i.e., PAA‐MoS2 and PAA‐Au‐MoS2) exhibits greatly enhanced optical performances compared with those of silicon wafer‐supported MoS2 (i.e., Si/SiO2‐MoS2). Notably, 11‐fold Raman enhancement, 13‐fold photoluminescence enhancement, and 419‐fold second‐harmonic generation enhancement are achieved in PAA‐Au‐MoS2. Moreover, the optical enhancement mechanism of this unique structure is proposed. This work provides a platform for the construction of curved/heterostructured TMDs and exploration of their strong light‐matter interactions.
Funder
National Natural Science Foundation of China
Subject
Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials