2014 Total hydrogen content and its distribution among SiH, SiH2 and other H’ sites of sputtered a-Si : H films vary after posthydrogenation but the dangling bond concentrations remain constant. This can be explained by preferential H diffusion in the tissue zone where most of the hydrogen is located, while the residual dangling bonds are in the islands. The photoconductivity is controlled by s...

Cuprous oxide (Cu2O) is an attractive material for solar energy applications, but its photoconductivity is limited by minority carrier recombination caused by native defect trap states. We examine the creation of trap states by cation vacancies, using first principles calculations based on density functional theory (DFT) to analyze the electronic structure and calculate formation energies. With...

We present a nonperturbative quasiclassical theory of graphene photoconductivity. consider the influence low-frequency (microwave, terahertz, midinfrared) radiation on static conductivity uniform layer and calculate its photoconductivity as function frequency, polarization, strength external ac electric field, well material properties (electron density, scattering time) temperature. The is vali...

Ever since its mid nineteenth century inauguration, the logistic function and numerous applications have received a great deal of attention from engineers, natural social scientists. In particular, discrete relative, map, has proven to be principal indispensable tool scientists in their effort describe dynamics variety physical biological systems. Our purpose this paper is one such application,...