48 citations · 95 across the 5 of their papers we have counts for
6 papers
Network structure and dynamics of hydrogenated amorphous silicon
D. A. Drabold, T. A. Abtew, F. Inam +1
In this paper we discuss the application of current it ab initio computer simulation techniques to hydrogenated amorphous silicon (a-Si:H). We begin by discussing thermal fluctuati…
Ab initio estimate of temperature dependence of electrical conductivity in a model amorphous material: hydrogenated amorphous silicon
T. A. Abtew, M. Zhang, D. A. Drabold
We present an ab initio calculation of the DC conductivity of amorphous silicon and hydrogenated amorphous silicon. The Kubo-Greenwood formula is used to obtain the DC conductivity…
Thermally stimulated H emission and diffusion in hydrogenated amorphous silicon
T. A. Abtew, F. Inam, D. A. Drabold
We report first principles ab initio density functional calculations of hydrogen dynam- ics in hydrogenated amorphous silicon. Thermal motion of the host Si atoms drives H diffusio…
First principles molecular dynamics study of amorphous Si\sub{1-x}Ge\sub{x}:H alloys
T. A. Abtew, D. A. Drabold
We study the structural, dynamical and electronic properties of amorphous Si\sub{1-x}Ge\sub{x}:H alloys using first principles local basis molecular dynamics simulation. The networ…
Hydrogen dynamics and light-induced structural changes in hydrogenated amorphous silicon
T. A. Abtew, D. A. Drabold
We use accurate first principles methods to study the network dynamics of hydrogenated amorphous silicon, including the motion of hydrogen. In addition to studies of atomic dynamic…
Atomistic simulation of light-induced changes in hydrogenated amorphous silicon
T. A. Abtew, D. A. Drabold
We employ ab initio molecular dynamics to simulate the response of hydrogenated amorphous silicon to light exposure (Staebler-Wronski effect). We obtain improved microscopic unders…