Synthesis of Cu/ZnO nanocomposites by r.f. co-sputtering technique

Vázquez‐Cuchillo, O.; Pal, U.; Vázquez-López, C.

doi:10.1016/s0927-0248(01)00078-2

Cited by 11 publications

(10 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In fact, such a reduction of crystallinity on doping of metals/semiconductors has been observed even in sputter-deposited composite films. 18,19 The reduction of crystallinity in the samples was further monitored by measuring the average particle size in the samples from the ͑002͒ diffraction peaks using the Scherrer formula:…”

Section: A Structure Morphology and Compositionmentioning

confidence: 99%

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Mendoza-Galván

Trejo-Cruz

Lee

et al. 2006

Journal of Applied Physics

View full text Add to dashboard Cite

Optical properties of metal ͑Al, Ag, Sb, and Sn͒-ion-implanted ZnO films have been studied by ultraviolet-visible spectroscopy and spectroscopic ellipsometric techniques. The effects of metal-ion doping on the optical band gap ͑E g ͒, refractive index ͑n͒, and extinction coefficient ͑k͒ of nanocrystalline ZnO films have been studied for the similar implantation dose of all the metal ions. The ellipsometric spectra of the ion-implanted samples could be well described by considering an air/roughness/ZnO-M ͑layer 1͒/ZnO ͑layer 2͒/glass model. The band gap of ZnO films increases with Al ion doping and decreases with doping of Ag, Sb, and Sn ions. The refractive index of ZnO films in the visible spectral region increases substantially on Sb and Sn ion doping, while it decreases to some extent with Al ion doping.

show abstract

Section: A Structure Morphology and Compositionmentioning

confidence: 99%

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Mendoza-Galván

Trejo-Cruz

Lee

et al. 2006

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…The XRD patterns of the composite films revaled the presence of Cu, both in elemental and oxide form in the composites [12].…”

Section: Resultsmentioning

confidence: 93%

“…Most of the nanoparticles were in the range of 3-14 nm in diameter and dispersed homogeneously in the matrix. The average diameter of the nano-clusters increased with the increase of Cu content and also with the annealing temperature [12].…”

Section: Computational Detailsmentioning

confidence: 94%

“…Several techniques, for example, ion-implantation [2,6,7,8], chemical [9], sol-gel [10] and sputtering [11][12][13] have been employed by several workers to prepare metal nanocomposites. For the production of nonlinear optical devices, it is important to ensure a certain concentration of such colloidal particles in the matrix.…”

Section: Introductionmentioning

confidence: 99%

“…On the other hand, by alternate or co-sputtering technique, we can control the amount of dopant easily without modifying the optical properties of the host material. Though, silica or quartz glass have been used vastly as matrix material to prepare colloidal metal particle composites, there are only a few reports on the use of functional matrix material like ZnO for this purpose [11,12,14].…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Formation of Cu _x clusters in Cu/ZnO nanocomposites studied by IR spectroscopy

Pal

Vázquez‐Cuchillo

Bautista‐Hernández

et al. 2003

phys. stat. sol. (c)

View full text Add to dashboard Cite

PACS: 61.46.+w, 63.22.+m, 78.30.Er, 78.67.Bf Nanocomposites of Cu/ZnO with different Cu contents were prepared by radio frequency co-sputtering technique. The composite films were annealed at different temperatures in argon atmosphere for 2 hrs. Transmission electron microscopy and x-ray diffraction studies revealed the formation of partially oxidized Cu nanoparticles in ZnO matrix. The size of the Cu nanoparticles depended strongly on the annealing temperature. Infrared spectroscopy study revealed that the nanoparticles consist of an elemental Cu core surrounded by the oxidized copper shell. The elemental core consists of Cu x clusters. IR spectroscopy and DFT calculation were used to identify the Cu clusters.

show abstract

Copper and iron based thin film nanocomposites prepared by radio frequency sputtering. Part I: elaboration and characterization of metal/oxide thin film nanocomposites using controlled in situ reduction process

et al. 2013

View full text Add to dashboard Cite

Copper and iron based thin films were prepared on glass substrate by radio-frequency sputtering technique from a delafossite CuFeO 2 target. After deposition, the structure and microstructure of the films were examined using grazing incidence X-ray diffraction, Raman spectroscopy, electron probe micro-analysis and transmission electron microscopy coupled with EDS mapping. Target to substrate distance and sputtering gas pressure were varied to obtain films having different amount and distribution of copper nanoparticles and different composition of oxide matrix. The overall reaction process, which starts from CuFeO 2 target and ends with the formation of films having different proportion of copper, copper oxide and iron oxide, was described by a combination of balanced chemical reactions. A direct relationship between the composition of the metal/oxide nanocomposite thin film and the sputtering parameters was established. This empirical relationship can further be used to control the composition of the metal/oxide nanocomposite thin films, i.e. the in situ reduction of copper ions in the target.

show abstract

Synthesis of Cu/ZnO nanocomposites by r.f. co-sputtering technique

Cited by 11 publications

References 12 publications

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Formation of Cu _x clusters in Cu/ZnO nanocomposites studied by IR spectroscopy

Copper and iron based thin film nanocomposites prepared by radio frequency sputtering. Part I: elaboration and characterization of metal/oxide thin film nanocomposites using controlled in situ reduction process

Contact Info

Product

Resources

About

Synthesis of Cu/ZnO nanocomposites by r.f. co-sputtering technique

Cited by 11 publications

References 12 publications

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Effect of metal-ion doping on the optical properties of nanocrystalline ZnO thin films

Formation of Cu x clusters in Cu/ZnO nanocomposites studied by IR spectroscopy

Copper and iron based thin film nanocomposites prepared by radio frequency sputtering. Part I: elaboration and characterization of metal/oxide thin film nanocomposites using controlled in situ reduction process

Contact Info

Product

Resources

About

Formation of Cu _x clusters in Cu/ZnO nanocomposites studied by IR spectroscopy