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Raman investigation of strain effects in CdSe nanorods
Author(s) -
Lange Holger,
Artemyev Mikhail,
Woggon Ulrike,
Thomsen Christian
Publication year - 2009
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.200982349
Subject(s) - nanorod , raman spectroscopy , materials science , nanotechnology , epitaxy , shell (structure) , strain (injury) , phonon , optoelectronics , optics , composite material , condensed matter physics , layer (electronics) , medicine , physics
We use Raman spectroscopy to investigate strain in thin CdSe–ZnS core‐shell nanorods. Bare CdSe nanorods are compressed due to surface reconstruction mechanisms. The addition of an epitaxial ZnS shell around the nanorod leads to a compressive strain of the nanorod due to the lattice mismatch between ZnS and CdSe. The amount of strain in the CdSe lattice increases with an increasing shell size. Longitudinal optical phonon Raman bands of CdSe nanorods. The nanorod covered with a ZnS shell is strained and the related Raman band is shifted.