Abstract
The isolation of silicon nanocrystals embedded in SiO 2 and isolated nanocrystals' excitonic emission energy were investigated during controlled oxidation. The nanocrystals with diameters of ∼2.9-3.4 nm exhibited photoluminescence (PL) blueshift upon oxidatively induced size reduction. The oxidation of smaller Si nanocrystals resulted in a PL blueshift, but a redshift in the PL was observed after growth of ∼0.3 monolayers of native oxide. The results show that decrease in excitonic emission energy during oxidation is consistent with formation of an oxygen-related excitonic recombination state.
| Original language | English |
|---|---|
| Pages (from-to) | 5389-5391 |
| Number of pages | 3 |
| Journal | Applied Physics Letters |
| Volume | 84 |
| Issue number | 26 |
| DOIs | |
| Publication status | Published - Jun 28 2004 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)
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Biteen, J. S., Lewis, N. S., Atwater, H. A., & Polman, A. (2004). Size-dependent oxygen-related electronic states in silicon nanocrystals. Applied Physics Letters, 84(26), 5389-5391. https://doi.org/10.1063/1.1765200