We report on the direct observation of confined acoustic phonons in the photoluminescence spectra of single CdSe-CdS-ZnS nanocrystals, whose ligands were exchanged to poly(ethylene oxide) (PEO) before they were embedded in a PEO matrix. Modeling a nanocrystal as an elastic sphere, the confined acoustic modes can be assigned to purely radial vibrations: the breathing mode and its two first radial harmonics. In addition to acoustic modes, we also observe longitudinal optical modes of the core material and, remarkably, also of both shell materials.
TY - JOUR
AU - Chilla, Gerwin
AU - Kipp, Tobias
AU - Menke, Torben
AU - Heitmann, Detlef
AU - Nikolić, Marija
AU - Froemsdorf, Andreas
AU - Kornowski, Andreas
AU - Foerster, Stephan
AU - Weller, Horst
PY - 2008
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1253
AB - We report on the direct observation of confined acoustic phonons in the photoluminescence spectra of single CdSe-CdS-ZnS nanocrystals, whose ligands were exchanged to poly(ethylene oxide) (PEO) before they were embedded in a PEO matrix. Modeling a nanocrystal as an elastic sphere, the confined acoustic modes can be assigned to purely radial vibrations: the breathing mode and its two first radial harmonics. In addition to acoustic modes, we also observe longitudinal optical modes of the core material and, remarkably, also of both shell materials.
PB - Amer Physical Soc, College Pk
T2 - Physical Review Letters
T1 - Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal
IS - 5
VL - 100
DO - 10.1103/PhysRevLett.100.057403
ER -
@article{
author = "Chilla, Gerwin and Kipp, Tobias and Menke, Torben and Heitmann, Detlef and Nikolić, Marija and Froemsdorf, Andreas and Kornowski, Andreas and Foerster, Stephan and Weller, Horst",
year = "2008",
abstract = "We report on the direct observation of confined acoustic phonons in the photoluminescence spectra of single CdSe-CdS-ZnS nanocrystals, whose ligands were exchanged to poly(ethylene oxide) (PEO) before they were embedded in a PEO matrix. Modeling a nanocrystal as an elastic sphere, the confined acoustic modes can be assigned to purely radial vibrations: the breathing mode and its two first radial harmonics. In addition to acoustic modes, we also observe longitudinal optical modes of the core material and, remarkably, also of both shell materials.",
publisher = "Amer Physical Soc, College Pk",
journal = "Physical Review Letters",
title = "Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal",
number = "5",
volume = "100",
doi = "10.1103/PhysRevLett.100.057403"
}
Chilla, G., Kipp, T., Menke, T., Heitmann, D., Nikolić, M., Froemsdorf, A., Kornowski, A., Foerster, S.,& Weller, H.. (2008). Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal. in Physical Review Letters
Amer Physical Soc, College Pk., 100(5).
https://doi.org/10.1103/PhysRevLett.100.057403
Chilla G, Kipp T, Menke T, Heitmann D, Nikolić M, Froemsdorf A, Kornowski A, Foerster S, Weller H. Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal. in Physical Review Letters. 2008;100(5).
doi:10.1103/PhysRevLett.100.057403 .
Chilla, Gerwin, Kipp, Tobias, Menke, Torben, Heitmann, Detlef, Nikolić, Marija, Froemsdorf, Andreas, Kornowski, Andreas, Foerster, Stephan, Weller, Horst, "Direct observation of confined acoustic phonons in the photoluminescence spectra of a single CdSe-CdS-ZnS core-shell-shell nanocrystal" in Physical Review Letters, 100, no. 5 (2008),
https://doi.org/10.1103/PhysRevLett.100.057403 . .
