Enhancement of the near-band-edge photoluminescence of ZnO nanowires: Important role of hydrogen incorporation versus plasmon resonances

Journal Article · Mon Mar 28 04:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3569951· OSTI ID:21518349

Dev, A; Richters, J P; Gutowski, J; Voss, T ^[1]; Sartor, J; Kalt, H ^[2]

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1. Institute of Solid State Physics, University of Bremen, D-28359 Bremen (Germany)
2. Institute for Applied Physics, Karlsruhe Institute of Technology, D-76131 Karlsruhe (Germany)

We investigated the photoluminescence properties of ZnO nanowires coated with Au, Ag, and Pt nanoparticles deposited by dc sputtering. A strong enhancement of the near-band-edge emission was observed in all metal-coated samples but also if the samples were treated with Ar plasma without any nanoparticle deposition. High-resolution photoluminescence spectroscopy revealed hydrogen-donor-bound-exciton emission in all samples indicating unintentional hydrogen incorporation. A shorter decay time of the near-band-edge emission was observed in all cases. The results indicate that unintentional hydrogen incorporation plays a dominant role when metal deposition is performed by sputtering.

• OSTI ID: 21518349
• Journal Information: Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 13 Vol. 98; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
77 NANOSCIENCE AND NANOTECHNOLOGY
CHALCOGENIDES
DEPOSITION
ELEMENTS
EMISSION
EXCITONS
GOLD
HYDROGEN
LUMINESCENCE
MATERIALS
METALS
NANOSTRUCTURES
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PARTICLES
PHOTOLUMINESCENCE
PHOTON EMISSION
PLASMA
PLATINUM
PLATINUM METALS
PROCESSING
QUANTUM WIRES
QUASI PARTICLES
RESOLUTION
SEMICONDUCTOR MATERIALS
SILVER
SPECTROSCOPY
SPUTTERING
SURFACES
TRANSITION ELEMENTS
ZINC COMPOUNDS
ZINC OXIDES