Meier, Cedrik; Lüttjohann, Stephan; Kravets, Vasyl G.; Nienhaus, Hermann; Lorke, Axel; Wiggers, Hartmut:
Raman properties of silicon nanoparticles
In: Physica E: Low-dimensional Systems and Nanostructures, Vol. 32 (2006), No. 1/2, pp. 155 - 158
2006article/chapter in journal
Mechanical EngineeringPhysics (incl. Astronomy)Faculty of Physics » Experimental Physics
Title:
Raman properties of silicon nanoparticles
Author:
Meier, CedrikUDE
LSF ID
2675
ORCID
0000-0002-3787-3572ORCID iD
Other
connected with university
;
Lüttjohann, Stephan;Kravets, Vasyl G.;Nienhaus, HermannUDE
LSF ID
1103
Other
connected with university
;
Lorke, AxelUDE
GND
1042619697
LSF ID
2509
ORCID
0000-0002-0405-7720ORCID iD
Other
connected with university
;
Wiggers, HartmutUDE
GND
172637171
LSF ID
1643
ORCID
0000-0001-8487-9937ORCID iD
Other
connected with university
Year of publication:
2006

Abstract:

The Raman spectra of silicon nanoparticles in the size range between d=3.5d=3.5–View the MathML source60nm have been studied experimentally. Scattering processes up to second order are being observed. The experimental results are analyzed in the framework of the phonon confinement model. While this model describes qualitatively the observations for first-order scattering processes, it is not applicable for scattering processes of higher order. From the analysis of second-order scattering, we determine a redshift of the TO phonon at the X and L points.