Hong Shen

TL;DR: A few-layer MoS2 photodetector driven by poly(vinylidene fluoride-trifluoroethylene) ferroelectrics is achieved, tuned by the ultrahigh electrostatic field from the ferroelectric polarization.

TL;DR: MoTe2 has an appropriate bandgap for both visible and infrared light photodetection and the appreciable performance and detection over a broad spectral range make it a promising material for high-performancePhotodetectors.

TL;DR: High performance photodetectors based on two-dimensional transition-metal dichalcogenides have been achieved with a broad photoresponse spectrum and quick response and with the intrinsic huge electric field derived from the polarization of ferroelectric polymer gating, a low dark current can be achieved without additional gate bias.

TL;DR: A pronounced enhancement of the third-order nonlinear optical susceptibility χ((3)) in Au arrays was observed, and the figure of merit of the periodic nanoparticle arrays is one order of magnitude larger than that of the ultra-thin film.

TL;DR: In this paper, the optical properties of colloidal Au and poly(vinylpyrrolidone) (PVP) composite films were investigated using the Z-scan technique with 25 ps pulses at 532 nm near the surface plasmon resonance frequency of Au nanoparticles.