ACTA

Morphology and Selected Properties of Core/Shell ZnTe-Based Nanowire Structures Containing ZnO

K. Gas^a, E. Janik^a, W. Zaleszczyk^a, I. Pasternak^b, E. Dynowska^a, K. Fronc^a, V. Kolkovsky^a, S. Kret^a, J.F. Morhange^c, A. Reszka^a, M. Wiater^a, W. Caliebe^d, G. Karczewski^a, B.J. Kowalski^a, W. Szuszkiewicz^a and T. Wojtowicz^a
^aInstitute of Physics, PAS, al. Lotników 32/46, 02-668 Warszawa, Poland
^bInstitute of Electron Technology, al. Lotników 32/46, 02-668 Warsaw, Poland
^cInstitut des Nanosciences de Paris, UMR 7588, UMPC, 140 rue de Lourmel, 75015 Paris, France
^dHamburger Synchrotronstrahlungslabor HASYLAB am Deutschen Elektronen-Synchrotron, DESY, Notkestr. 85, D-22603 Hamburg, Germany

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We report on an approach to fabricate ZnTe-based core/shell radial heterostructures containing ZnO, as well as on some of their physical properties. The molecular beam epitaxy grown ZnTe nanowires constituted the core of the investigated structures and the ZnO shells were obtained by thermal oxidation of ZnTe NWs. The influence of the parameters characterizing the oxidation process on selected properties of core/shell NWs were examined. Scanning electron microscopy revealed changes of the NWs morphology for various conditions of the oxidation process. X-ray diffraction, high resolution transmission electron microscopy, and Raman scattering measurements were applied to reveal the presence of ZnTe single crystal core and polycrystalline ZnO-shell of investigated structure.

DOI: 10.12693/APhysPolA.119.612
PACS numbers: 68.37.Hk, 68.37.Lp, 68.65.La, 81.07.Vb