Project Description

CALENDAR OF PLANNED EVENTS

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CALENDAR OF PLANNED EVENTS

December 2021

January
MO
TU
WE
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FR
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SU
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Dr. José Joaquín Velázquez García

Scientific background: 

  • Sol-gel, Crystallization, Oxyfluoride and Semiconductor glass and glass-ceramics, optically active materials, porous materials, Functional materials for optics and energy.

International projects:

  • HORIZON 2020, WIDESPREAD-01-2016-2017-TeamingPhase2, Centre for functional and surface-functionalized glasses, 3/2017 – 2/2024, Researcher.

 National projets:

  • FIS2006-02980, Luminescent nano-structured glass-ceramics: a possible new generation of integrated photonic devices, 01/01/2006-31/12/2009, Researcher
  • PIL2260902, Improving efficiency photovoltaic cells by nanomaterials, 05/10/2009-04/10/2013, Researcher
  • MAT2009-12079, Nanostructured luminescent materials for optimal use of solar energy in photovoltaic cells, 01/01/2010-31/12/2013, Researcher
  • MAT2013-42407-R, Materials for sustainable and clean energy, 01/01/2014-31/12/2016, Researcher
  • MAT2013-48246-C2-1-P/-2-P, Effect of processing on the structure and properties of glasses and glass-ceramics with photonic applications (VITROPHOTONICS), 01/01/2014 – 31/12/2017, Researcher
  • MAT2017-87035-C2-1-P/-2-P, High-optical-quality luminiscent glass and glass-ceramics for photonic applications (VITROPHOTONICS Q+), 01/01/2018 – 31/12/2020, Researcher
  • VEGA 1/0431/18, The relationship between composition, structure and properties of inorganic-organic nanocomposite films for protection of materials, 01/2018-12/2021, Researcher.

Publication activity: 

  • 1 Chapter in monographs
  • 36 publications in Scientific journals (WOS)
  • 25+ contributed lectures at conferences
  • 400+ citations (SCI)
  • 5 conference papers

 2019

  • J. Velázquez, J. Mosa, G. Gorni, R. Balda, J. Fernández, L. Pascual, A. Durán and Y. Castro, Transparent SiO2-GdF3 sol–gel nano-glass ceramics for optical applications, Journal of Sol-Gel Science and Technology 89 322–332 (2019) DOI: 10.1007/s10971-018-4693-z

2018

  • G Gorni, J.J. Velázquez, J. Mosa, R. Balda, J. Fernández, A. Durán and Y. Castro, Transparent Glass-Ceramics Produced by Sol-Gel: A Suitable Alternative for Photonic Materials, Materials 11 212 (2018)doi:10.3390/ma11020212
  • J. Velázquez, R. Balda, J. Fernández, G. Gorni, G.C. Mather, L. Pascual, A. Durán, M.J. Pascual, Transparent glass-ceramics of sodium lutetium fluoride co-doped with erbium and ytterbium, Journal of Non-Crystalline Solids 501 136–144 (2018) DOI: 10.1016/j.jnoncrysol.2017.12.051
  • J. Velázquez, R. Balda, J. Fernández, G. Gorni, L. Pascual, G. Chen, M. Sundararajan, A. Durán, M.J. Pascual, Transparent oxyfluoride glass-ceramics with NaGdF4 nanocrystals doped with Pr3+ and Pr3+-Yb3+, Journal of Luminescence 193 61–69 (2018) DOI: 10.1016/j.jlumin.2017.07.034
  • Giulio Gorni, Rolindes Balda, Joaquın Fernández, Jose J. Velázquez, Laura Pascual, Jadra Mosa, Alicia Durán and Yolanda Castro, International Journal of Applied Glass Science 9 208–217 (2018). DOI: 10.1111/ijag.12338

2017:

  • Gorni, J.J. Velázquez, G.C. Mather, A. Durán, G. Chen, M. Sundararajan, R. Balda, J. Fernández, M.J. Pascual, Selective excitation in transparent oxyfluoride glass-ceramics doped with Nd3+, Journal of the European Ceramic Society 37 1695–1706 (2017) DOI: 10.1016/j.jeurceramsoc.2016.11.014
  • J. Velázquez, c, d, R. Fernández-González, L. Díaz, E. Pulido Melián, V.D. Rodríguez, P. Núñez, Effect of reaction temperature and sacrificial agent on the photocatalytic H2-production of Pt-TiO2 Journal of Alloys and Compounds 721 405-410 (2017) DOI: 10.1016/j.jallcom.2017.05.314
  • Gorni, R. Balda, J. Fernández, I. Iparraguirre, J. J. Velázquez, Y. Castro, L. Pascual, G. Chen, M. Sundararajan, M. J. Pascual and A. Durán, Oxyfluoride glass–ceramic fibers doped with Nd3+: structural and optical characterization, CrystEngComm 19 6620 (2017) DOI: 10.1039/c7ce01380a

2016:

  • Fernández-González, J. J. Velázquez, V. D. Rodríguez, F. Rivera-López, A. Lukowiak, A. Chiasera, M. Ferrari, R. R. Gonçalves, J. Marrero-Jerez, F. Lahoz and P. Núñez, Luminescence and structural analysis of Ce3+ and Er3+ doped and Ce3+–Er3+ codoped Ca3Sc2Si3O12 garnets: influence of the doping concentration in the energy transfer processes, RSC Advances, 6, 15054 (2016) DOI: 10.1039/c5ra22630a

2015:

  • J. Velázquez, R. Fernández-González , J. Marrero-Jerez, V.D. Rodríguez, A. Lukowiak, A. Chiappini, A. Chiasera, M. Ferrari, P. Núñez, Structural and luminescence study of Ce3+ and Tb3+ doped Ca3Sc2Si3O12 garnets obtained by freeze-drying synthesis method, Optical Materials 46 109–114 (2015) DOI: 10.1016/j.optmat.2015.03.057
  • J. Velázquez, A. C. Yanes, J. del-Castillo, C. Guzmán-Afonso, and V. D. Rodríguez, Dual Emission in Multiphase SiO2–SnO2–LaF3 Nanostructured Glass-Ceramics for simultaneous UV and NIR Solar Spectrum Conversion, Science of Advanced Materials Vol. 7 1–6 (2015) DOI: 10.1166/sam.2015.2284

2013:

  • Mikhail V. Shestakov, Liviu F. Chibotaru, Victor K. Tikhomirov, Vicente D. Rodriguez, Jose J. Velázquez and Victor V. Moshchalkov, Theory of the kinetics of luminescence and its temperature dependence for Ag nanoclusters dispersed in a glass host, Physical Chemistry Chemical Physics, 15 15949-15953 (2013) DOI: 1039/C3CP52681J
  • Vicente D. Rodríguez, Victor K. Tikhomirov, Jose J. Velázquez, Mikhail V. Shestakov and Victor V. Moshchalkov, Visible-to-UV/Violet Upconversion Dynamics in Er3+ -Doped Oxyfluoride Nanoscale Glass Ceramics, Advanced Optical Materials 1 747-752 (2013) DOI: 1002/adom.201300212

2012:

  • J. Velázquez, V.K. Tikhomirov, L.F. Chibotaru, N.T. Cuong, A.S. Kuznetsov, V.D. Rodríguez, M.T. Nguyen and V.V. Moshchalkov, Energy level diagram and kinetics of luminescence of Ag nanoclusters dispersed in a glass host, Optics express, 20 13582 (2012) DOI: 10.1364/OE.20.013582
  • S. Kuznetsov, J.J. Velázquez, V.K. Tikhomirov, J. Mendez-Ramos and V.V. Moshchalkov, Quantum yield of luminescence of Ag nanoclusters dispersed within transparent bulk glass vs. glass composition and temperature, Applied physics letters 101, 251106 (2012) DOI: 10.1063/1.4772957
  • J. Velázquez, V.D. Rodríguez, A.C. Yanes, J. del-Castillo, J. Méndez-Ramos, Down-shifting in Ce3+–Tb3+ co-doped SiO2–LaF3 nano-glass–ceramics for photon conversion in solar cells, Optical Materials 34 1994–1997 (2012) DOI: 10.1016/j.optmat.2011.12.020

2010:

  • J. Velázquez, A.C. Yanes, J. del-Castillo, J. Méndez-Ramos, V.D. Rodríguez, Spectroscopic characterization and up-conversion in sol–gel derived Yb3+–Pr3+ co-doped SiO2–LaF3 nano-glass-ceramics, Journal of Non-Crystalline Solids 356 1349–1353 (2010) DOI: 10.1016/j.jnoncrysol.2010.03.001

2009:

  • C. Yanes, J. J. Velázquez, J. del-Castillo, J. Méndez-Ramos and V. D. Rodríguez, Colour tuneability and white light generation in Yb3+–Ho3+–Tm3+ co-doped SiO2–LaF3 nano-glass-ceramics prepared by sol–gel method, Journal of Sol-Gel Science and Technology 51 4–9 (2009) DOI 10.1007/s10971-009-1924-3

2008:

  • A C Yanes, J.J. Velázquez, J del-Castillo, J Méndez-Ramos and V D Rodríguez, Site-selective spectroscopy in Sm3+-doped sol–gel-derived nano-glass-ceramics containing SnO2 quantum dots, Nanotechnology 19 295707 (2008) doi:10.1088/0957-4484/19/29/295707

Education:

  • 2005: BSc: Universidad de La Laguna (ULL), Faculty of Physics
  • 2007: DEA (Diploma de Estudios Avanzados): Universidad de La Laguna (ULL), Faculty of Physics; Department Applied Physics, Diploma Thesis: Luminescent Nanostructured Materials; Synthesis and Characterization
  • 2013: PhD: Universidad de La Laguna (ULL), Faculty of Physics; Department of Applied Physics; PhD thesis: Lanthanides ions doped glass-ceramics based on insulating and/or semiconductors nanocrystals dispersed in SiO2. Synthesis, structural and spectroscopic characterization

Awards, scholarships and research stays:

  • Cajacanarias Grants for Central Research Services –ULL: Thermal Analysis Service, Universidad de La Laguna, La Laguna, Spain, 2007
  • Cajacanarias Grants for Central Research Services –ULL: Magnetic Measurements Service, Universidad de La Laguna, La Laguna, Spain, 2008
  • Cajacanarias Grants for Central Research Services –ULL: Thermal Analysis Service, Universidad de La Laguna, La Laguna, Spain, 2009
  • FPI grant, Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI) and European Social Fund, Universidad de La Laguna, La Laguna, Spain, 2009-2013
  • 2010 Short Estays Grant, Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI) and European Social Fund, Institutute For Nanoscale Physics and Chemistry (INPAC), Katholieke Universiteit Leuven (KUL), Leuven, Belgium, 2010
  • 2012 Short Estays Grant, Agencia Canaria de Investigación, Innovación y Sociedad de la Información (ACIISI) and European Social Fund, CNRS- Institute for Photonics and Nanotechnologies (IFN), Trento, Italy, 2013
  • 2013 Postdoctoral Training contracts grants, GlaSS group, Glass Department, Ceramic and Glass Institute (ICV-CSIC), Madrid, Spain, 2015-2017
  • 2014, Doctorate Extraordinary Award, Universidad de La Laguna (ULL), La Laguna, Spain
  • 2017, Posdoctoral contract, GlaSS group, Glass Department, Ceramic and Glass Institute (ICV-CSIC), Madrid, Spain, 2017-2018

Other activities:

  • Sociedad Española de Ceramica y Vidrio, member
  • European Ceramic Society, member
  • Member of Organisation Committees of 3 young researcher workshops
  • Member of Organisation Committee of 1 international conference
Dr. José Joaquín Velázquez García
Dr. José Joaquín Velázquez García
Head of Department of Functional materials
Researcher
E-mail: jose.velazquez@tnuni.sk
Tel.: +421 32 7400 518
Office: n. 217