Ultrathin silicon-on-insulator, composed of a crystalline sheet of silicon bounded by native oxide and a buried oxide layer, is extremely resistive because of charge trapping at the interfaces between the sheet of silicon and the oxide. After chemical modification of the top surface with hydrofluoric acid (HF), the sheet resistance drops to values below what is expected based on bulk doping alo...

Well defined sequences of non-uniform and uniform degradation steps are applied on several high quality bifacial p-i-n solar cells with different thicknesses of the intrinsic layer. This procedure allows one to separate interface and bulk effects in the degradation of a-Si:H solar cells, or more precisely to separate the influence of the modification of the internal electric field profile (due ...

A multibody interatomic potential is developed for bulk SiC using a modification of the Wolf et al. summation technique [D. Wolf, P. Keblinski, S. R. Phillpot, and J. Eggebrecht, J. Chem. Phys. 110, 8254 (1999)] for the electrostatic interaction. The technique is modified to account for the short-range nonpoint charge effect. The nonelectrostatic interaction is modeled by a simple Morse-stretch...

In this work, the development and characterization of a new ceramic material modified with polyaniline powder obtained by high-power ultrasound sol-gel route is presented. A preliminary screening conducting polymer electroactivity was performed means cyclic voltammetry in free analyte solution. Remarkable figures merit for 4-chloro-3-methylphenol (PCMC) determination, selected as model organic ...

Different modification routes using fly ash-based calcium silicate (FACS) with starch/sodium stearate were explored to mitigate the negative effect of filler on paper strength and allow for improved filler content. The morphology of the modified fillers and the properties of the filled paper were investigated. The modification route was found to be critical to the amount of starch/sodium steara...

0079-6425/$ see front matter 2012 Elsevier Lt http://dx.doi.org/10.1016/j.pmatsci.2012.07.002 ⇑ Corresponding author. Tel.: +86 28 85400453; E-mail addresses: [email protected], zhao Significant progress has been achieved in the last years on the modification of polyethersulfone (PES) membranes. Many articles and reviews have been written on the development in the area of PES membrane modif...