| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1547430 | Physica E: Low-dimensional Systems and Nanostructures | 2009 | 4 Pages |
Abstract
Two-photon-excited luminescence after femtosecond near-infrared (NIR) excitation was observed in chemically oxidized silicon nanocrystals (Si-nc) produced by laser-assisted pyrolysis of silane. The luminescence time decay and emission spectrum resulted in good agreement with those after blue excitation. The underlying two-photon absorption coefficient was also measured by the open-aperture z-scan technique, obtaining a value of 12.5Â cm/GW, which is intermediate between the values reported in the literature for bulk silicon and for very small Si-nc.
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Authors
M. Falconieri, R. D'Amato, F. Fabbri, M. Carpanese, E. Borsella,