Time-Resolved Investigation of Bright Visible Wavelength Luminescence from Sulfur-Doped ZnO Nanowires and Micropowders

Sulfur-doped zinc oxide (ZnO) nanowires grown on gold-coated silicon substrates inside a horizontal tube furnace exhibit remarkably strong visible wavelength emission with a quantum efficiency of 30%, an integrated intensity 1600 times stronger than band edge ultraviolet emission, and a spectral dis...

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Bibliographic Details
Published in:Nano letters 2006-06, Vol.6 (6), p.1126-1130
Main Authors: Foreman, John V, Li, Jianye, Peng, Hongying, Choi, Soojeong, Everitt, Henry O, Liu, Jie
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cross-disciplinary physics: materials science
rheology
Equipment Design
Equipment Failure Analysis
Exact sciences and technology
Light
Luminescence
Luminescent Measurements - instrumentation
Luminescent Measurements - methods
Materials science
Materials Testing
Molecular Conformation
Nanoscale materials and structures: fabrication and characterization
Nanostructures - chemistry
Nanostructures - radiation effects
Nanostructures - ultrastructure
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Other luminescence and radiative recombination
Other topics in nanoscale materials and structures
Particle Size
Physics
Powders
Quantum wires
Spectrometry, Fluorescence
Sulfur - chemistry
Time Factors
Zinc Oxide - chemistry
Zinc Oxide - radiation effects
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Summary:Sulfur-doped zinc oxide (ZnO) nanowires grown on gold-coated silicon substrates inside a horizontal tube furnace exhibit remarkably strong visible wavelength emission with a quantum efficiency of 30%, an integrated intensity 1600 times stronger than band edge ultraviolet emission, and a spectral distribution that closely matches the dark-adapted human eye response. By comparatively studying sulfur-doped and undoped ZnO micropowders, we clarify how sulfur doping and nanostructuring affect the visible luminescence and the underlying energy transfer mechanisms.
ISSN:1530-6984
1530-6992
DOI:10.1021/nl060204z