TEP120 Materials Science and Engineering

Submitted by francisco.grimaldi on Fri, 07/31/2020 - 10:05
University
Faculty/school/department
FACULTAD DE CIENCIAS
Size of the team
number of researchers number of supporting staff number of PhD students
20
0
0
PI
PI name
RAFAEL ROJA GARCÏA
PI bio

Full Prof. since 1998 (Assoc. Prof. 1985), got Bachelor at US 1975 and PhD at UCA 1981 both in Chemical Sciences. He performed postdoctoral stays at Arizona University with Fulbright grants in 1985-86 and 1986-87, and at universities A&M Texas 1983 and Oxford 1989. Since 1988 he is the head of the TEP-120 group. At UCA he was coordinator of the Electron Microscopy Facilities (1998-2001), Director of the Dep. Materials Science and ME and IQ, Vice-Rector of R&D (2003-2007), and Rector Counselor for Research Networks and Technology Parks (2007-2011). He participated in 49 projects, 15 contracts, more than 200 publications, about 300 communications to conferences, and directed 10 doctoral thesys.

Contact person and e-mail
Contact person
RAFAEL ROJA GARCÏA
Contact person e-mail
Short description of research profile

The active research lines focused to specific materials at the CIM-UCA group, at this moment, are:

-Semiconductor nanowires, quantum-wells or quantum-dots for micro- and opto-electronic applications.
-GaAsSbBiN semiconductor alloy engineering for applications in solar cells and high performance photodetectors.
-Multiple systems of thin layers and nanostructures based on the activity of binary III-N nitrides (InN, AlN, GaN), ternary (InAlN, InGaN, AlGaN) and quaternary (InAlGaN) for optoelectronics, power electronics and photovoltaic technology.
-Synthetic diamond for materials engineering in electronics, aeronautics, tools and medicine.
-Systems elaborated by glancing-oblique angle deposition (oxides and metals) for optic, optronic and thermochromic applications.
-Studies of phase transformations of minerals of industrial interest by thermo-chemical treatments.
-Reinforced polymers for aeronautics.

Research area
Publications

Representative publications

On the importance of light scattering for high performances nanostructured antireflective surfaces Maudet F., Lacroix B., Santos A.J., Paumier F., Paraillous M., Hurand S., Corvisier A., Dupeyrat C., García R., Morales F.M., Girardeau T. Acta Materialia   (2020) Vol: 188. Pgs: 386-393
COMPREHENSIVE (S)TEM CHARACTERIZATION OF POLYCRYSTALLINE GaN/AlN LAYERS GROWN ON LTCC SUBSTRATES. J.J.Jiménez, J.M. Mánuel, H. Bartsch, J. Breiling, R. García, H.O. Jacobs, J. Müller, J. Pezoldt, F.M. Morales. Ceramics International. 2019. Vol: 45. Núm: 7. Pgs. 9114-9125.
CONTROL OF NITROGEN INHOMOGENEITIES IN TYPE-I AND TYPE-II GaAsSbN SUPERLATTICES FOR SOLAR CELL DEVICES. N.Ruiz, V. Braza, A. Gonzalo, D. Fernández, T. Ben, S. Flores, J.M. Ulloa, D. González. Nanomaterials. 2019. Vol: 9. Núm: 4. Pgs. 623[1]-623[9].
HIGH RESOLUTION BORON CONTENT PROFILOMETRY AT Δ-DOPING EPITAXIAL DIAMOND INTERFACES BY CTEM. J.C.Piñero, F. Lloret, M.P. Alegre, M.P. Villar, A. Fiori, E. Bustarret, D. Araújo. Applied Surface Science. 2018. Vol: 461. Pgs. 221-226.
MODELLING OF BISMUTH SEGREGATION IN InAsBi/InAs SUPERLATTICES: DETERMINATION OF THE EXCHANGE ENERGIES. S.Flores, D.F. Reyes, V. Braza, R.D. Richards, F. Bastiman, T. Ben, N. Ruiz-Marín, J.P.R. David, D. González. S.Flores, D.F. Reyes, V. Braza, R.D. Richards, F. Bastiman, T. Ben, N. Ruiz-Marín, J.P.R. David, D. González.

Link to extended list of publication

Technology Expertise

The general objective is to understand relationships between constitutive nature, properties, and methods of synthesis and processing of functional and structural materials; to contribute to the development of their stages of fabrication and implementation, through the elaboration of design rules to accomplish foreseen applications. This is done by (i) micro- and nano-characterization of structure and composition by SEM, FIB, (S)TEM), XRD, etc.; (ii) theoretical-empirical studies and modeling of materials at different scales; (iii) development of new TEM methods and computer simulation of TEM images; (iv) synthesis by CVD and PVD; and (v) electronic and optical characterization.