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Your search keyword '"J. Roque De la Puente"' showing total 2 results
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2 results on '"J. Roque De la Puente"'

1. Optimization of CdxZn1-xS compound from CdS/ZnS bi-layers deposited by chemical bath deposition for thin film solar cells application

Author

F. Cruz-Gandarilla, V. Hernández-Calderón, J. Roque De la Puente, F. J. Sánchez-Rodríguez, F.A. Pulgarín-Agudelo, Antonio Arce-Plaza, Maykel Courel, and Osvaldo Vigil-Galán

Subjects
010302 applied physics, Cadmium, Materials science, Metals and Alloys, chemistry.chemical_element, 02 engineering and technology, Surfaces and Interfaces, 021001 nanoscience & nanotechnology, 01 natural sciences, Zinc sulfide, Buffer (optical fiber), Cadmium sulfide, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, chemistry.chemical_compound, chemistry, Chemical engineering, Ternary compound, 0103 physical sciences, Materials Chemistry, Deposition (phase transition), 0210 nano-technology, Layer (electronics), Chemical bath deposition
Abstract

In this paper, we report results on the processing of cadmium zinc sulfide (CdxZn1-xS) ternary compound starting from the deposition of cadmium sulfide (CdS)/zinc sulfide (ZnS) bi-layers buffer configuration and a subsequent thermal annealing for its application to thin film solar cells. The impact of different CdS/ZnS bi-layers buffer configurations as effective alternative to the single CdS buffer layer, as well as the physical and chemical properties of the equivalent CdxZn1-xS ternary compound are presented and discussed. Results on physical properties optimization of CdxZn1-xS ternary compound for future applications to thin film solar cells are presented.

Published
2019
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2. Cu-Ni nano-alloy: mixed, core-shell or Janus nano-particle?

Author

Guisbiers G, Khanal S, Ruiz-Zepeda F, Roque de la Puente J, and José-Yacaman M

Subjects
Computer Simulation, Materials Testing, Models, Molecular, Particle Size, Phase Transition, Surface Properties, Temperature, Copper chemistry, Metal Nanoparticles chemistry, Metal Nanoparticles ultrastructure, Models, Chemical, Nickel chemistry
Abstract

Bimetallic nanoparticles like Cu-Ni are particularly attractive due to their magnetic and catalytic properties; however, their properties depend strongly on the structure of the alloy i.e. mixed, core-shell or Janus. To predict the alloy structure, this paper investigates the size and shape effects as well as the surface segregation effect on the Cu-Ni phase diagram. Phase maps have been plotted to determine the mixing/demixing behavior of this alloy according the particle shape. Cu-Ni nanoalloy can form a mixed particle or a Janus one depending on the synthesis temperature. Surface segregation is also considered and reveals a nickel surface-enrichment. Finally, this paper provides a useful roadmap for experimentalists.

Published
2014
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