Selected optical properties of core/shell ZnMnTe/ZnO nanowire structures

Katarzyna Gas , Elzbieta Janik , Wojciech Zaleszczyk , Elzbieta Dynowska , Miroslaw Kutrowski , Agnieszka Kaminska , Jean-François Morhange (1) , Lukasz Wachnicki , Tomasz Wojciechowski , Robert Holyst (2) , Marek Godlewski , Elzbieta Guziewicz , Tomasz Wojtowicz (3) , Wojciech Szuszkiewicz

1 INSP - Institut des Nanosciences de Paris
2 Institute of Physical Chemistry
3 Institute of Physics

We report here on selected optical properties of core/shell Zn(1-x)Mn(x)Te/ZnO nanowires (NWs). The Zn(1-x)Mn(x)Te cores of the investigated structures (containing from 3.5 to 7% of Mn) were grown by the MBE technique using gold-catalyzed vapor-liquid-solid mechanism. Polycrystalline ZnO shells coating Zn(1-x)Mn(x)Te NWs were overgrown by the atomic layer deposition (ALD) method. Core/shell NWs were then examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), Raman scattering, and photoluminescence (PL) measurements. The lines characteristic of the ZnO band edge emission and the intra-Mn(2+) transition were observed in the PL spectra. Modification of the Raman spectra of as-grown Zn(1-x)Mn(x)Te/ZnO samples induced by the ZnO shell is demonstrated and discussed. (C) 2011 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Mots clés: core/shell nanowires; photoluminescence; Raman scattering; scanning electron microscopy; X-ray diffraction

Domaines: Matière Condensée [cond-mat]

Katarzyna Gas, Elzbieta Janik, Wojciech Zaleszczyk, Elzbieta Dynowska, Miroslaw Kutrowski, et al.. Selected optical properties of core/shell ZnMnTe/ZnO nanowire structures. physica status solidi (b), 2011, 248 (7), pp.1592-1595. ⟨10.1002/pssb.201001150⟩. ⟨hal-01229215⟩