Growth and characterization of type-II ZnO/ZnTe core-shell nanowire arrays for solar cell applications
Journal
Superlattices and Microstructures
Journal Volume
47
Journal Issue
1
Pages
160-164
Date Issued
2010
Author(s)
Abstract
Large area, well-aligned type-II ZnO/ZnTe core-shell nanowire arrays have been fabricated on an a-plane sapphire substrate. The ZnO nanowires were grown in a furnace by chemical vapor deposition with gold as catalyst and then were coated with a ZnTe shell on the ZnO nanowires surface by a metal-organic chemical deposition chamber. The morphology and size distribution of the ZnO/ZnTe core-shell nanowire arrays were studied by scanning electron microscopy (SEM) and the crystal structure was examined by x-ray diffraction (XRD). Transmission measurement was used to study the optical properties of the core-shell nanowires. The results indicated that the ZnO/ZnTe core-shell nanowire arrays have good crystalline quality. In addition, it was found that the nanowire arrays have good light absorption characteristics and these properties make it suitable for making photovoltaic devices. © 2009 Elsevier Ltd. All rights reserved.
Subjects
Core-shell nanostructure; Nanowires; ZnO; ZnTe
SDGs
Other Subjects
A-plane sapphire; Chemical deposition; Core-shell nanostructure; Core-shell nanostructures; Core-shell nanowires; Crystalline quality; Metal-organic; Morphology and size; Nanowire arrays; Photovoltaic devices; SEM; Solar-cell applications; Transmission measurements; Well-aligned; ZnO; ZnO nanowires; Corundum; Crystal structure; Electric wire; Gold deposits; Light; Light transmission; Optical properties; Organic chemicals; Scanning electron microscopy; Semiconducting zinc compounds; Shells (structures); X ray diffraction; Zinc oxide; Nanowires
Type
journal article