The magnetic properties of bimagnetic core/shell nanoparticles consisting of an antiferromagnetic MnO core and a ferrimagnetic passivation shell have been investigated. It is found that the phase of the passivation shell (gamma-Mn(2)O(3) or Mn(3)O(4)) depends on the size of the nanoparticles. Structural and magnetic characterizations concur that while the smallest nanoparticles have a predomina...

A technique using the sudden change in the geometrical shape of metal line is considered for effective accumulation of atoms, and therefore fabrication of micro/nano materials utilizing electromigration. The experimental sample of Al metal line is formed on a TiN layer and covered with a SiO2 passivation layer. Thereafter, the sample is placed on a ceramic heater under atmospheric conditions, a...

Ultrathin black phosphorus is a two-dimensional semiconductor with a sizeable band gap. Its excellent electronic properties make it attractive for applications in transistor, logic and optoelectronic devices. However, it is also the first widely investigated two-dimensional material to undergo degradation upon exposure to ambient air. Therefore a passivation method is required to study the intr...

In higher-order process calculi the values exchanged in communications may contain processes. There are only two capabilities for received processes: execution and forwarding. Here we propose a limited form of forwarding: output actions can only communicate the parallel composition of statically known closed processes and processes received through previously executed input actions. We study th...

Based on first principles calculations, we investigate two probable types of deactivation mechanisms that hinder current efforts ofdoping ZnO p-type. (i) Passivation by Hydrogen. H prefers to bind with NO at the anti-bonding site and form NO–H complexes with abinding energy of about 1 eV. (ii) Passivation by the formation of substitutional diatomic molecules (SDM). Carbon impurities and...

We report a correlative analysis between corona oxide characterization of semiconductor (COCOS) and Kelvin probe force microscopy (KPFM) in study embedded silicon surfaces the field chemical field-effect passivation. The COCOS approach gives access to defect density, total charge contained passivation stack, potential barrier. Based on parameters, we could by KPFM analyze influence stack upon s...

We used depth-resolved cathodoluminescence spectroscopy (DRCLS), photoluminescence (PL) spectroscopy and temperature-dependent Hall-effect (TDHE) measurements to describe the strong dependence of H passivation and doping in H-implanted ZnO on thermal treatment. Increasing H implantation dose increases passivation of Zn and oxygen vacancy-related defects, while reducing deep level emissions. Ove...

Vertical structured Gallium nitride (GaN) p-n junction diodes with improved breakdown properties have been demonstrated using high-k dielectric passivation underneath the field plate. Simulation results at a reverse voltage of 1 kV showed that the maximum electric field near the mesa-etched p-n junction edges covered with film of dielectric constant k = 10 was reduced to 2.0 MV/cm from 3.0 MV/c...

We have investigated the characteristics of a silicon oxynitride/silver/silicon oxynitride [SiON/Ag/SiON] multilayer passivation grown using a specially designed roll-to-roll [R2R] sputtering system on a flexible polyethersulfone substrate. Optical, structural, and surface properties of the R2R grown SiON/Ag/SiON multilayer were investigated as a function of the SiON thickness at a constant Ag ...

A series of cobalt-containing redox couples, based on [Co(1,10-phenanthroline)(3)](ClO(4))(2) and its derivatives, were prepared for use as regenerators/shuttles in dye-sensitized solar cells featuring modified TiO(2) photoelectrodes. Surface modification and trap-state passivation of the TiO(2) nanoparticle film electrodes were accomplished via atomic layer deposition of an ultrathin alumina c...