A black phosphorus photodetector is utilized to investigate the light-scattering patterns of a silicon waveguide through wavelength- and polarization-dependent scanning photocurrent measurements. The photocurrent signals exhibit similar patterns to the light-intensity distribution of the waveguide calculated by finite-difference time-domain simulations, suggesting that photoexcited electron-hol...

Abstract Based on first-principles calculation, the adsorption of sulfur-based gas molecules (H 2 S, SO , 3 ) various metal-decorated phosphorenes is researched systematically. Eleven metals (Li, Na, K, Rb, Cs, Ca, Sr, Ba, Ni, La, Tl) which can avoid formation clusters phosphorene are considered. Noticeably, all metal decorations enhance strength to except for H S Tl-decorated phosphorene. Mean...

The success of graphene for nanopore DNA sequencing has shown that it is possible to explore other potential single-atom and few-atom thick layers elemental 2D materials beyond (e.g., phosphorene silicene). Using density functional theory, we studied the interaction bases with nanopores created in finite-size nanoribbons from graphene, phosphorene, silicene. We observe binding energies using si...

D eji Akinwande, professor of electrical and computer engineering at the University of Texas, Austin, develops electronic devices that rely on atom-thin sheets known as two-dimensional (2-D) materials. While the carbon material graphene has received the lion’s share of attention in this field, analogous materials such as silicene, phosphorene, and molybdenum disulfide are increasingly being tap...