A5072721186- 2D Materials and Applications
- Molecular Junctions and Nanostructures
- Terahertz technology and applications
- Semiconductor materials and interfaces
- Advanced Thermoelectric Materials and Devices
- Near-Field Optical Microscopy
- Plasmonic and Surface Plasmon Research
University of California System
2025
Lawrence Berkeley National Laboratory
2025
The University of Texas at Austin
2020
Significance Defects in two-dimensional (2D) transition-metal dichalcogenides play a crucial role controlling the spatiotemporal dynamics of photogenerated charge carriers, which remain poorly understood to date. In this paper, defect-mediated carrier diffusion and recombination WS 2 monolayers are quantitatively investigated by laser-illuminated microwave impedance microscopy. Surprisingly, photoresponse is general stronger more disordered regions samples. Such counterintuitive observations...
Two-dimensional semiconductors and their moiré superlattices have emerged as important platforms for investigating correlated electrons. However, many key properties of these systems, such the frequency-dependent conductivity, remain experimentally inaccessible because mesoscopic sample size. Here we report a technique to directly measure complex conductivity electrostatically gated two-dimensional in terahertz frequency range. Applying this WSe2 monolayer encapsulated hBN, observe clear...
Two-dimensional semiconductors and their moir\'e superlattices have emerged as important platforms for investigating correlated electrons. However, many key properties of these systems, such the frequency-dependent conductivity, remain experimentally inaccessible because mesoscopic sample size. Here we report a technique to directly measure complex conductivity electrostatically gated two-dimensional in terahertz frequency range. Applying this WSe2 monolayer encapsulated hBN, observe clear...