ZnTe–ZnO core–shell radial heterostructures grown by the combination of molecular beamepitaxy and atomic layer deposition

Abstract

ZnTe–ZnO core–shell radial heterostructures were grown using a new method of combiningmolecular beam epitaxy (MBE) and atomic layer deposition (ALD). Zinc telluridenanowires (core) were grown on a GaAs substrate using gold catalyzed vapor–liquid–solidmechanism. An atomic layer deposition technique using diethyl zinc and deionized water asprecursors was applied for zinc oxide shell formation. The core–shell ZnTe–ZnOheterostructures thus obtained were characterized by scanning electron microscopy,transmission electron microscopy, x-ray diffraction and photoluminescence measurements.