Spectroscopic ellipsometry studies of nanocrystalline silicon in thin-film silicon dioxide

Gerald E. Jellison, Stephen P. Withrow, Supriya Jaiswal, Christopher M. Rouleau, John T. Simpson, Clark W. White, C. Owen Griffiths

Research output: Contribution to journalConference articlepeer-review

Abstract

Nanocrystalline silicon (n-Si) is formed in a silicon dioxide thin-film matrix by ion implantation followed by thermal annealing in forming gas at 1100°C for 1 hour. The ion implantation is performed using multiple implants with different implantation energies and doses to create a quasi-flat concentration of silicon atoms throughout the silicon dioxide film. These samples are then analyzed using spectroscopic ellipsometry to characterize their linear optical properties. Implantations with small doses (5 × 1020 Si atoms/cm3) increase the refractive index by a small amount (Δn∼0.006 at 600nm), while implantations with moderate dose (5 × 1021 Si atoms/cm3) have a larger increase in refractive index and exhibit optical absorption above ∼1.9 eV (650 nm).

Original languageEnglish
Pages (from-to)259-264
Number of pages6
JournalMaterials Research Society Symposium - Proceedings
Volume737
StatePublished - 2003
EventQuantum Confined Semiconductor Nanostructures - Boston MA, United States
Duration: Dec 2 2002Dec 5 2002

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