Optical properties of silicon nanowires from cathodoluminescence imaging and time-resolved photoluminescence spectroscopy
- 30 May 2007
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 75 (20) , 205343
- https://doi.org/10.1103/physrevb.75.205343
Abstract
Time-resolved photoluminescence spectroscopy and cathodoluminescence spectroscopy and imaging have been used to investigate the optical properties of oxygen- and hydrogen-terminated silicon nanowires. We have found that the red- and the blue-emission bands from these nanowires are characterized by homogeneous broadening and are due to interface states in the silicon core and oxygen-based defects at the oxide cladding layer, respectively. Our results exclude the possibility that quantum confinement effects are responsible for these emission bands.Keywords
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