The Interface Energy and Interface Stress of Amorphous Silicon.

Atomistic Features of the Amorphous-Crystal Interface in Silicon

We simulate the amorphous-crystal interface in silicon using a combination of interatomic potential molecular-dynamics and tight-binding conjugate-gradient relaxation. The samples we create have high quality crystalline and amorphous portions. We develop some localized measures of order to characterize the interface, including a missing neighbor vector and the bond angle deviation. We nd that t...

The Amorphous-Crystal Interface in Silicon: a Tight-Binding Simulation

Electronic properties of amorphous siliconand its interface with crystalline silicon

B Bader Theory for charge analysis 77 Bibliography 89 Introduction The wide eeort of the past decade to understand physical properties of the semiconductor heterojunctions has provided many fundamental and applica-tive results 1, 2]. The experience acquired on simple systems like isovalent common anion heterojunctions, e.g. GaAs/AlAs, has been successfully extended to heterovalent systems and a...

Improved amorphous/crystalline silicon interface passivation by hydrogen plasma treatment

plasma treatment A. Descoeudres, L. Barraud, Stefaan De Wolf, B. Strahm, D. Lachenal, C. Guérin, Z. C. Holman, F. Zicarelli, B. Demaurex, J. Seif, J. Holovsky, and C. Ballif Photovoltaics and Thin Film Electronics Laboratory, Institute of Microengineering (IMT), Ecole Polytechnique Fédérale de Lausanne (EPFL), Rue A.-L. Breguet 2, 2000 Neuchâtel, Switzerland Roth & Rau Switzerland SA, Rue de la...

Cement-Implant Interface Fracture Failure by Crack Initiation Due to Interface Cavity Stress Concentration

Nowadays total joint replacements are widely used in the world, so in average 800,000 joint surgeries are done yearly only in Europe and North America. However implant loosening is and remains as the major issue of all implant failures and therefore causes revision surgery procedures. Studies and experiments have identified poor fixation of implants most likely is the main cause of long term im...