Presented as part of a commemorative issue for Wolfgang Kiefer on the occasion of his 65th birthday.
Raman scattering of acoustical modes of silicon nanoparticles embedded in silica matrix†
Version of Record online: 12 JAN 2006
Copyright © 2006 John Wiley & Sons, Ltd.
Journal of Raman Spectroscopy
Special Issue: Commemorative Issue: for Wolfgang Kiefer on the Occasion of his 65th Birthday
Volume 37, Issue 1-3, pages 161–165, January - March 2006
How to Cite
Ivanda, M., Hohl, A., Montagna, M., Mariotto, G., Ferrari, M., Crnjak Orel, Z., Turković, A. and Furić, K. (2006), Raman scattering of acoustical modes of silicon nanoparticles embedded in silica matrix. J. Raman Spectrosc., 37: 161–165. doi: 10.1002/jrs.1445
- Issue online: 12 JAN 2006
- Version of Record online: 12 JAN 2006
- Manuscript Accepted: 6 JUL 2005
- Manuscript Received: 29 APR 2005
- silicon nanoparticles;
- spherical vibrational modes;
- size distribution;
- coupling coefficient
The Raman scattering from acoustical phonons of silicon quantum dots in glass matrix was investigated. Two peaks that correspond to symmetric and quadrupolar spheroidal vibrations were found. A model calculation for in- and off-resonance scattering conditions was used, which considered the homogeneous broadening due to interaction with matrix and the inhomogeneous broadening due to particle size distribution. A strong dependence of the light-to-vibration coupling coefficient on the particles size was needed for fitting the Raman data. This result suggests that resonance with electronic transitions of the silicon nanoparticles is important for excitation at 514.5 nm. The size distribution obtained from the Raman data is in agreement with the results of high-resolution transmission electron microscopy. Copyright © 2006 John Wiley & Sons, Ltd.