731 citations · 1.8k across the 11 of their papers we have counts for
11 papers
Asymmetrical contact scaling and measurements in MoS2 FETs
Zhihui Cheng, Jonathan Backman, Huairuo Zhang +8
Two-dimensional (2D) materials have great potential for use in future electronics due to their atomically thin nature which withstands short channel effects and thus enables better…
Immunity to Scaling in MoS2 Transistors Using Edge Contacts
Zhihui Cheng, Katherine Price, Shreya Singh +5
Atomically thin two-dimensional (2D) materials are promising candidates for sub-10 nm transistor channels due to their ultrathin body thickness, which results in strong electrostat…
Room-Temperature Electron-Hole Liquid in Monolayer MoS2
Yiling Yu, Alexander Bataller, Robert Younts +6
Excitons in semiconductors are usually non interacting and behave like an ideal gas, but may condense to a strongly correlated liquid like state, i.e. electron hole liquid (EHL), a…
Giant Gating Tunability of Optical Refractive Index in Transition Metal Dichalcogenide Monolayers
Yiling Yu, Yifei Yu, Lujun Huang +3
We report that the refractive index of transition metal dichacolgenide (TMDC) monolayers, such as MoS2, WS2, and WSe2, can be substantially tuned by > 60% in the imaginary part and…
Enhancing Multifunctionalities of Transition Metal Dichalcogenide Monolayers via Intercalation of Molecules and Ions
Yifei Yu, Lujun Huang, Guoqing Li +6
Transition metal dichalcogenide (TMDC) monolayers present a remarkable multifunctional material with potential to enable the development of a wide range of novel devices. However,…
In-Situ Monitoring of Thermal Annealing Induced Evolution in Film Morphology and Film-Substrate Bonding in a Monolayer MoS2 Film
Liqin Su, Yifei Yu, Linyou Cao +1
We perform in-situ two-cycle thermal cycling and annealing studies for a transferred CVD-grown monolayer MoS2 on a SiO2/Si substrate, using spatially resolved micro-Raman and PL sp…
Fundamental Limits of Exciton-Exciton Annihilation for Light Emission in Transition Metal Dichalcogenide Monolayers
Yiling Yu, Yifei Yu, Chao Xu +3
We quantitatively illustrate the fundamental limit that exciton-exciton annihilation (EEA) may impose to the light emission of monolayer transition metal dichalcogenide (TMDC) mate…
Exciton-dominated Dielectric Function of Atomically Thin MoS2 Films
Yiling Yu, Yifei Yu, Yongqing Cai +8
We systematically measure the dielectric function of atomically thin MoS2 films with different layer numbers and demonstrate that excitonic effects play a dominant role in the diel…
Temperature Dependent Valley Relaxation Dynamics in Single Layer WS2 Measured Using Ultrafast Spectroscopy
Cong Mai, Yuriy G. Semenov, Andrew Barrette +5
We measured the lifetime of optically created valley polarization in single layer WS2 using transient absorption spectroscopy. The electron valley relaxation is very short (< 1ps).…
Efficient Interlayer Relaxation and Transition of Excitons in Epitaxial and Non-epitaxial MoS2/WS2 Heterostructures
Yifei Yu, Shi Hu, Liqin Su +8
Semiconductor heterostructures provide a powerful platform for the engineering of excitons. Here we report the excitonic properties of two-dimensional (2D) heterostructures that co…
Layer-dependent Electrocatalysis of MoS2 for Hydrogen Evolution
Yifei Yu, Shengyang Huang, Yanpeng Li +3
The quantitative correlation of the catalytic activity with microscopic structure of heterogeneous catalysts is a major challenge for the field of catalysis science. It requests sy…