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Observation of ballistic avalanche phenomena in nanoscale vertical InSe/BP heterostructures
Anyuan Gao, Jiawei Lai, Yaojia Wang +13
Initiating impact ionization of avalanche breakdown essentially requires applying a high electric field in a long active region, hampering carrier-multiplication with high gain, lo…
A High-Performance Mid-infrared Optical Switch Enabled by Bulk Dirac Fermions in Cd3As2
Chunhui Zhu, Fengqiu Wang, Yafei Meng +11
Pulsed lasers operating in the 2-5 μm band are important for a wide range of applications in sensing, spectroscopy, imaging and communications. Despite recent advances with mid-inf…
Broadband Photovoltaic Detectors based on an Atomically Thin Heterostructure
Mingsheng Long, Erfu Liu, Peng Wang +19
Van der Waals junctions of two-dimensional materials with an atomically sharp interface open up unprecedented opportunities to design and study functional heterostructures. Semicon…
High responsivity phototransistors based on few-layer ReS2 for weak signal detection
Erfu Liu, Mingsheng Long, Junwen Zeng +18
Two-dimensional transition metal dichalcogenides are emerging with tremendous potential in many optoelectronic applications due to their strong light-matter interactions. To fully…
Realization of Room-Temperature Phonon-limited Carrier Transport in Monolayer MoS2 by Dielectric and Carrier Screening
Zhihao Yu, Zhun-Yong Ong, Yiming Pan +9
We show that by combining high-k dielectric substrate and high density of charge carriers, Coulomb impurity can be effectively screened, leading to an unprecedented room-temperatur…
High-Performance Monolayer WS2 Field-effect Transistors on High-k Dielectrics
Yang Cui, Run Xin, Zhihao Yu +13
The combination of high-quality Al2O3 dielectric and thiol chemistry passivation can effectively reduce the density of interface traps and Coulomb impurities of WS2, leading to a s…
Planar carbon nanotube-graphene hybrid films for high-performance broadband photodetectors
Yuanda Liu, Fengqiu Wang, Xiaomu Wang +8
Graphene has emerged as a promising material for photonic applications fuelled by its superior electronic and optical properties. However, the photoresponsivity is limited by the l…
Integrated Digital Inverters Based on Two-dimensional Anisotropic ReS2 Field-effect Transistors
Erfu Liu, Yajun Fu, Yaojia Wang +20
Semiconducting two-dimensional (2D) transition metal dichalcogenides (TMDs) are emerging as top candidates for post-silicon electronics. While most of 2D TMDs exhibit isotropic beh…
Artificial Synapse Network on Inorganic Proton Conductor for Neuromorphic Systems Applications
Li Qiang Zhu, Chang Jin Wan, Li Qiang Guo +2
The basic units in our brain are neurons and each neuron has more than 1000 synapse connections. Synapse is the basic structure for information transfer in an ever-changing manner,…