Effects of Au layer thickness and number of bilayers on the properties of Au/ZnO multilayers

Journal Article · Sun May 01 00:00:00 EDT 2011 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3580333· OSTI ID:21560235

Cespedes, Eva; Prieto, Carlos ^[1]; Babonneau, David ^[2]; Sousa Meneses, Domingos de ^[3]; Fonda, Emiliano; Lyon, Olivier ^[4]; Briand, Emrick ^[5]; Traverse, Agnes ^[6]

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1. Instituto de Ciencia de Materiales de Madrid, CSIC, Cantoblanco, Madrid, 28049 (Spain)
2. Institut Prime, UPR 3346 CNRS, Universite de Poitiers, Boulevard M. et P. Curie, F-86962 Futuroscope (France)
3. Centre Conditions Extremes et Materiaux, Haute Temperature et Irradiation, 1D Avenue de la Recherche Scientifique, F-45071 Orleans Cedex 2 (France)
4. Synchrotron-SOLEIL, L'Orme des Merisiers Saint-Aubin, BP 48, F-91192 Gif-sur-Yvette (France)
5. Institut des Nanosciences de Paris, UMR 7588 CNRS, Universite Pierre et Marie Curie, 75252 Paris Cedex 5 (France)
6. Laboratoire de Chimie Physique, UMR 8000, Universite Paris-Sud, CNRS, Batiment 349, 15 rue Georges Clemenceau, F-91405 Orsay cedex (France)

Multilayered films of Au/ZnO were prepared by physical vapor deposition. Varying the Au thickness, t{sub Au}, and the number of bilayers, n, allowed us to investigate the role of these parameters on the sample structural and electronic properties. X-ray diffraction, X-ray absorption spectroscopy, grazing incidence small angle X-ray scattering and transmission electron microscopy experiments, have been combined to UV-visible and infrared spectroscopy to characterize the multilayers in the as-prepared state and after annealing. In the as-prepared state, the strong Au and ZnO lattice interaction leads to ZnO epitaxy on Au. Gold appears either as continuous layers or in form of nanoparticles. ZnO experiences a structural transformation from wurztite to rock salt monitored by the Au morphology. Annealing at 500 deg. C destroys the lattice matching. The electronic and optical properties of the systems are understood in line with the Au morphology and ZnO structural state.

• OSTI ID: 21560235
• Journal Information: Journal of Applied Physics, Vol. 109, Issue 9; Other Information: DOI: 10.1063/1.3580333; (c) 2011 American Institute of Physics; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ABSORPTION SPECTROSCOPY
ANNEALING
EPITAXY
GOLD
INFRARED SPECTRA
LAYERS
NANOSTRUCTURES
PHYSICAL VAPOR DEPOSITION
SEMICONDUCTOR MATERIALS
SMALL ANGLE SCATTERING
SPUTTERING
SURFACES
TRANSFORMATIONS
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION
X-RAY SPECTRA
X-RAY SPECTROSCOPY
ZINC OXIDES
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL GROWTH METHODS
DEPOSITION
DIFFRACTION
ELECTRON MICROSCOPY
ELEMENTS
HEAT TREATMENTS
MATERIALS
METALS
MICROSCOPY
OXIDES
OXYGEN COMPOUNDS
SCATTERING
SPECTRA
SPECTROSCOPY
SURFACE COATING
TRANSITION ELEMENTS
ZINC COMPOUNDS