ZnTe nanowires overgrown by atomic layer deposited (Zn,Co) oxides: Raman scattering studies

Author

Gas, K. ; Dynowska, Elzbieta ; Lukasiewicz, M. ; Wiater, M. ; Witkowski, B.S. ; Guziewicz, Elzbieta ; Godlewski, Marek ; Kaminska, A. ; Holyst, R. ; Wojtowicz, T. ; Szuszkiewicz, W.

Author_Institution

Institute of Physics PAS, Warsaw, Poland

fYear

2012

fDate

3-7 Sept. 2012

Firstpage

41

Lastpage

42

Abstract

Micro-Raman measurements were performed to study the vibrational properties of molecular beam epitaxy grown ZnTe nanowires (NWs) with atomic layer deposited (Zn,Co) oxides shell. A significant decrease of relative intensity of structures related to the ZnTe (NWs core) and Te (precipitates) phonons, resulting from the overgrowth of the NWs by the oxide shells is observed. The dependence of the Raman spectra on the laser power is shown and discussed. It is demonstrated that the crystallization of amorphous oxide shell and formation of Co3O4 crystals can be induced by increasing laser power during the measurements.

Keywords

Atomic layer deposition; Laser excitation; Measurement by laser beam; Molecular beam epitaxial growth; Nanowires; Power lasers; Raman scattering; Raman scattering; core-shell nanostructures; nanowires;

fLanguage

English

Publisher

ieee

Conference_Titel

Oxide Materials for Electronic Engineering (OMEE), 2012 IEEE International Conference on

Conference_Location

Lviv, Ukraine

Print_ISBN

978-1-4673-4491-3

Type

conf

DOI

10.1109/OMEE.2012.6464852

Filename

6464852