731 citations · 2.1k across the 19 of their papers we have counts for
19 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…
Gate-tunable cross-plane heat dissipation in single-layer transition metal dichalcogenides
Zhun-Yong Ong, Gang Zhang, Linyou Cao +1
Efficient heat dissipation to the substrate is crucial for optimal device performance in nanoelectronics. We develop a theory of electronic thermal boundary conductance (TBC) media…
Exciton Mott Transition in Two-Dimensional Semiconductors
Yiling Yu, Guoqing Li, Linyou Cao
Exciton many-body interaction bear great implication for application in advanced photonic devices and quantum science and technology such as quantum computing, but the fundamental…
Low-loss composite photonic platform based on 2D semiconductor monolayers
Ipshita Datta, Sang Hoon Chae, Gaurang R. Bhatt +9
Two dimensional materials such as graphene and transition metal dichalcogenides (TMDs) are promising for optical modulation, detection, and light emission since their material prop…
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).…
Ultrathin Semiconductor Perfect Light Absorbers with High Spectral, Polarization, and Angle Selectivity for Arbitrary Wavelengths
Lujun Huang, Yiling Yu, Linyou Cao
Enabling perfect light absorption in ultrathin materials promises the development of exotic photonic devices. Here we demonstrate new strategies that can provide capabilities to ra…
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…
Semiconductor solar superabsorber
Yiling Yu, Lujun Huang, Linyou Cao
Understanding the maximal enhancement of solar absorption in semiconductor materials by light trapping promises the development of affordable solar cells. However, the conventional…
Non-equilibrium Thermal Super-radiation of Real Materials
Yiling Yu, Linyou Cao
We elucidate the theoretically maximal thermal radiation power from real materials at a given temperature. Our results demonstrate that the thermal radiation from real materials ma…
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…
Leaky Mode Engineering: A General Design Principle for Dielectric Optical Antenna Solar Absorbers
Yiling Yu, Linyou Cao
We present a general principle for the rational design of dielectric optical antennas with optimal solar absorption enhancement: leaky mode engineering. This builds upon our previo…
Solar Superabsorption of Semiconductor Materials
Yiling Yu, Lujun Huang, Linyou Cao
We theoretically demonstrate the fundamental limit in volume for given materials (e.g. Si, a-Si, CdTe) to fully absorb the solar radiation above bandgap, which we refer as solar su…