Abstract
Using Harris-functional molecular dynamics, we generate a 242-atom model of hydrogenated amorphous silicon. Our model has a hydrogen concentration of 11%, which is in the range of device-quality films. To produce our model, we first form a liquid at ∼1800 K and then quench to produce an amorphous structure at ∼300 K. We find our model produces radial distribution functions, which compare favorably with previous experimental and theoretical results. We investigate the limitations of molecular-dynamics-based methods for producing amorphous structures. In addition, we examine the hydrogen structures present, which include isolated SiH bonds and clusters of 2-7 Si-H bonds. The role of hydrogen and the relevance of these clusters is discussed.
Original language | English (US) |
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Pages (from-to) | 16265-16271 |
Number of pages | 7 |
Journal | Physical Review B - Condensed Matter and Materials Physics |
Volume | 53 |
Issue number | 24 |
DOIs | |
State | Published - 1996 |
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics