Abstract
We have investigated B diffusion in pre-amorphized silicon. In our experiments, the crystalline surface layer of silicon-on-insulator (SOI) substrates was completely amorphized by Ge ion implantation. Using SOI substrates in this fashion suppressed solid-phase-epitaxy regrowth, making it possible to investigate B diffusion in pre-amorphous silicon over a wider range of temperatures (500-650 °C) and times (5-1000 s) than has previously been reported. Diffusivities were determined with the aid of computational processes modeling. The results from this work demonstrate the B diffusion in a-Si is concentration dependent, exhibits a transient enhanced diffusion, and possesses an Arhennius behavior with activation energy of ∼2.1 eV.
| Original language | English |
|---|---|
| Pages (from-to) | 245-248 |
| Number of pages | 4 |
| Journal | Materials Science and Engineering: B |
| Volume | 124-125 |
| Issue number | SUPPL. |
| DOIs | |
| Publication status | Published - 5 Dec 2005 |
| Externally published | Yes |
Keywords
- Amorphous
- Boron
- Silicon