Boron diffusion in amorphous silicon

  • V. C. Venezia
  • , R. Duffy
  • , L. Pelaz
  • , M. J.P. Hopstaken
  • , G. C.J. Maas
  • , T. Dao
  • , Y. Tamminga
  • , P. Graat

Research output: Contribution to journalArticlepeer-review

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 languageEnglish
Pages (from-to)245-248
Number of pages4
JournalMaterials Science and Engineering: B
Volume124-125
Issue numberSUPPL.
DOIs
Publication statusPublished - 5 Dec 2005
Externally publishedYes

Keywords

  • Amorphous
  • Boron
  • Silicon

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