Synthesis and photoluminescence properties of vertically aligned ZnO nanorod-nanowall junction arrays on a ZnO-coated silicon substrate
- Authors
-
- chun), (li
- guojia), gj fang (fang
- fuhai), (su
- guohua), (li
- xiaoguang), (wu
- xingzhong), xz zhao (zhao
- Publication Date
- Jan 01, 2006
- Source
- Knowledge Repository of SEMI,CAS
- Keywords
-
- Temperature-Dependent Photoluminescence
- Optical-Properties
- Zinc-Oxide
- Thin-Films
- Vapor-Deposition
- Si Substrate
- Nanowires
- Growth
- Emission
- Epitaxy
- 半导体材料
- Optical Properties
- Zinc Oxide
- Thin Films
- Ion Beam Lithography
- Vapor-Plating
- Nanowires
- Development
- Emission
- Epitaxy
- Optical Constants
- Optische Eigen Schaften
- Proprietes Optiques
- Optical Props
- 锌白
- Chinese White
- Zinc White
- Oxyde De Zinc
- Zinkoxid
- Films, Thin
- Solid Film
- Dielectric Thin Films
- Epitaxial Layers
- High-K Dielectric Thin Films
- Insulating Thin Films
- Low-K Dielectric Thin Films
- Semimetallic Thin Films
- Superconducting Epitaxial Layers
- Superconducting Superlattices
- Superconducting Thin Films
- Duennfilme
- Films Minces
- 溅射
- Focused Ion Beam Technology
- Fib Etching
- Fib Technology
- Focused Ion Beam Etching
- Ion Beam Applications
- Ion Beam Assisted Deposition
- Ibad
- Ion Lithography
- Ionised Cluster Beam Deposition
- Ionized Cluster Beam Deposition
- Sputter Etching
- Ion Etching
- Plasma Ashing
- Plasma Etching
- Reactive Ion Etching
- Reactive Sputter Etching
- Rie
- Sputtering
- Cathodic Sputtering
- Dc Sputtering
- Diode Sputtering
- Magnetron Sputtering
- Radiofrequency Sputtering
- Reactive Sputtering
- Rf Sputtering
- Triode Sputtering
- Vacuum Deposition
- Evaporation (Film Deposition)
- Vapour Deposition
- Deposition Techniques
- Vapor Deposition
- Kathodenzerstaeubung
- Pulverisation Cathodique
- Ion Enhanced Deposition
- 真空镀膜
- Coating, Vacuum
- Deposition, Vapor
- Vacuum Coating
- Vacuum Metallizing
- Vapor-Phase Deposition
- Bedamfung
- Deposition De La Phase Vapeur
- Chemical Vapor Deposition
- Cvd (Deposition)
- Atomic Wires
- Molecular Wires
- Quantum Wires
- Subnanoscale Wires
- Semiconductor Nanowires
- Semiconductor Quantum Wires
- Quantum Wire Lasers
- Nano-Sized Wires
- Nano Scale Wires
- Nano Wires
- Nanoscale Wires
- 展开
- Growth
- Ontogeny
- Alloy Development
- 增长性
- Animal Growth
- Hypertrophy
- Maturing
- Growth Rate (Animals)
- Emanation
- X Ray Emission
- Epitaxial Growth
- Solid Phase Epitaxial Growth
- Solid Phase Epitaxy
- Spe
- License
- Unknown
- External links
Abstract
Arrays of vertically well-aligned ZnO nanorod-nanowall junctions have been synthesized on an undoped ZnO-coated silicon substrate by a carbothermal reduction and vapour phase transport method. X-ray diffraction (XRD) and scanning electron microscopy (SEM) show that the nanostructures are well-oriented with the c-axis perpendicular to the substrate. The room temperature photoluminescence (PL) spectrum of the as-prepared ZnO nanostructure reveals a dominant near-band-edge (NBE) emission peak and a weak deep level (DL) emission, which demonstrates its good optical properties. Temperature-dependent PL spectra show that both the intensity of NBE and DL emissions increased with decreasing temperature. The NBE emission at 3.27 eV is identified to originate from the radiative free exciton recombination. The possible growth mechanism of ZnO nanorod-nanowall junctions is also proposed.
