264 citations · 987 across the 10 of their papers we have counts for
10 papers
Relaxation and darkening of excitonic complexes in electrostatically-doped monolayer semiconductors: Roles of exciton-electron and trion-electron interactions
Min Yang, Lei Ren, Cedric Robert +5
We present photoluminescence measurements in monolayer WSe, which point to the importance of the interaction between charged particles and excitonic complexes. The theoretical…
Plasmonic Nature of the Terahertz Conductivity Peak in Single-Wall Carbon Nanotubes
Q. Zhang, E. H. Haroz, Z. Jin +5
Plasmon resonance is expected to occur in metallic and doped semiconducting carbon nanotubes in the terahertz frequency range, but its convincing identification has so far been elu…
Review of Anisotropic Terahertz Material Response
T. Arikawa, Q. Zhang, L. Ren +2
Anisotropy is ubiquitous in solids and enhanced in low-dimensional materials. In response to an electromagnetic wave, anisotropic absorptive and refractive properties result in dic…
Collective Antenna Effects in the Terahertz and Infrared Response of Highly Aligned Carbon Nanotube Arrays
L. Ren, Q. Zhang, C. L. Pint +8
We study macroscopically-aligned single-wall carbon nanotube arrays with uniform lengths via polarization-dependent terahertz and infrared transmission spectroscopy. Polarization a…
Terahertz Dynamics of Quantum-Confined Electrons in Carbon Nanomaterials
L. Ren, Q. Zhang, S. Nanot +3
Low-dimensional carbon nanostructures, such as single-wall carbon nanotubes (SWCNTs) and graphene, offer new opportunities for terahertz science and technology. Being zero-gap syst…
Terahertz and Infrared Spectroscopy of Gated Large-Area Graphene
Lei Ren, Qi Zhang, Jun Yao +9
We have fabricated a centimeter-size single-layer graphene device, with a gate electrode, which can modulate the transmission of terahertz and infrared waves. Using time-domain ter…