Profesor de Investigación
ada@icmm.csic.es
Office: 038 Phone: 91-3349016

 

Ph. D in Physics from the Autonomous University of Madrid in 1987.
Research Professor at the Materials Science Institute of Madrid (CSIC)
In charge of the Optical Spectroscopies Lab.Promoción Física 1982 UAM
 

EuroPhysicsNews2011                                            Santander 1982

 

 Look carefully, you may find someone you know, but remember that time goes by. 

 

Research Lines

Graphene based materials for optoelectronics

Organic-inorganic materials for optoelectronic applications

Magnetic semiconductor oxides, transparent conductive oxides.

Oxides with colossal magnetoresistance

 

Graphene based materials for optoelectronics

 

 General objectives

Design and fabrication of hybrid materials with optimal symbiosis of organic semiconductors, inorganic nanoparticles and graphene properties.

Search of new or improved features of the resulting nanostructured hybrid films,

Applications: transparent electrodes and nanostructured active layers in photovoltaic cells, electroluminescent devices, field effect transistors and sensors.

Approach

Materials design and fabrication + Fundamental study of materials +  Device fabrication +  Technology development

Basic studies

Resonant Raman processes in graphene oxide

Chemical and thermal reduction mechanisms in few layer thin films and bulk graphene oxides.

Stacking of graphene oxide few-layer films and defects produced by thermal and chemcial rediction mechanisms

 

Transparent electrodes:  Cheap, green, scalable to large areas, Indium free, on any substrate, in particular  flexible  ⇒  Graphene oxide (GO)

Optimization of chemically derived few-layer graphene films for transparent electrodes with doping control

Hybrid graphene based materials: chemically derived graphene thin films or CVD graphene with metallic, semiconductor or oxide nanoparticles.

 

Graphene patterning and nanostructuring – graphene quantum dots 

Large scale patterning of GO and G films for integration in devices,  Nano-Graphene-GQDs

Development and optimization of a novel mask-free cost-effective technique for micro/nano-patterning based on electrical micro/nano-discharges compatible with large area manufacturing.

CVD graphene and nanographene on  different metal thin films.

Building a home made set-up:  CVD + sputtering technique

 

Related Projects

“MATERIALES HIBRIDOS BASADOS EN GRAFENO PARA APLICACIONES EN ENERGIA Y DETECCION OPTICA”. Enero 2016- diciembre 2018,  MAT2015-65356-C3-1.

“PHAMA 2.0, Materiales híbridos avanzados para aplicaciones fotónicas” Programa de I + D entre grupos de investigación de la Comunidad de Madrid. Proyecto concedido. 2015-2018.

“Materiales híbridos basados en grafeno para aplicaciones optoelectrónicas: optimización de sus propiedades y procesado de dispositivos de bajo coste” ICMM. MAT2012- 37276-C03-01

“Sistemas de almacenamiento de energía con grafeno para vehículos eléctricos” Proyecto Repsol-INSPIRE. UPM-CSIC. Abril 2013 – diciembre 2015

Graphene Flagship, Octobre 2013 – . Workpackage Materials

 

 

Selected publications

  • Elastic constants of graphene oxide few-layer films: correlations with interlayer stacking and bonding – RJJ. Rioboo, E. Climent-Pascual, X. Diez-Betriu, F. Jimenez-Villacorta, C. Prieto, A. de Andres, J Mater Chem C 3, 4868 (2015).
  • Large area graphene and graphene oxide patterning and nanographene fabrication by one-step lithography – E. Climent-Pascual, M. Garcia-Velez, AL. Alvarez, C. Coya, C. Munuera, X. Diez-Betriu, M. Garcia-Hernandez, A. de Andres, Carbon 90, 110 (2015).
  • Lactate biosensor based on a bionanocomposite composed of titanium oxide nanoparticles, photocatalytically reduced graphene, and lactate oxidase – E. Casero, C. Alonso, MD. Petit-Dominguez, L. Vazquez, AM. Parra-Alfambra, P. Merino, S. Alvarez-Garcia, A. de Andres, E. Suarez, F. Pariente, E. Lorenzo, Microchim Acta 181, 79 (2014).
  • Graphene-oxide stacking and defects in few-layer films: Impact of thermal and chemical reduction – X. Diez-Betriu, FJ. Mompeam, C. Munuera, J. Rubio-Zuazo, R. Menendez, GR. Castro, A. de Andres, Carbon 80, 40 (2014).
  • Breakdown into nanoscale of graphene oxide: Confined hot spot atomic reduction and fragmentation – G. Goncalves, M. Vila, I. Bdikin, A. de Andres, N. Emami, RAS. Ferreira, LD. Carlos, J. Gracio, PAAP Marques, Scientific Reports 4, 6735 (2014).
  • Raman spectroscopy for the study of reduction mechanisms and optimization of conductivity in graphene oxide thin films – X. Diez-Betriu, S. Alvarez-Garcia, C. Botas, P. Alvarez, J. Sanchez-Marcos, C. Prieto, R. Menendez, A. de Andres, J Mater Chem C 1, 6905 (2013).
  • Comparative Response of Biosensing Platforms Based on Synthesized Graphene Oxide and Electrochemically Reduced Graphene – E. Casero, C. Alonso, L. Vazquez, MD. Petit-Dominguez, AM. Parra-Alfambra, M. de la Fuente, P. Merino, S. Alvarez-Garcia, A. de Andres, F. Pariente, E. Lorenzo, Electroanal 25, 154 (2013).
  • Carbon nanotubes-mesoporous silica composites as controllable biomaterials – M. Vila, JL. Hueso, M. Manzano, I. Izquierdo-Barba, A. de Andres, J. Sanchez-Marcos, C. Prieto, M. Vallet-Regi, J Mater Chem 19, 7745 (2009).

 

Organic-inorganic materials for optoelectronic applications

 

Funded projects

“Materiales híbridos avanzados para aplicaciones fotónicas” Programa de I + D entre grupos de investigación de la Comunidad de Madrid. S2009/MAT-1756.

Selected publications:

  • Multimetal rare earth MOFs for lighting and thermometry: tailoring color and optimal temperature range through enhanced disulfobenzoic triplet phospho – RF. D’Vries, S. Alvarez-Garcia, N. Snejko, LE. Bausa, E. Gutierrez-Puebla, A. de Andres, MA. Monge, J Mater Chem C 1, 6316 (2013).
  • Optical studies of amorphous Ge nanostructures in Al2O3 produced by pulsed laser deposition – J. Martin-Sanchez, J. Toudert, R. Serna, A. de Andres, J. Garcia-Lopez, Thin Solid Films 541, 92 (2013).
  • Star-shaped hexaaryltriindoles small molecules: Tuning molecular properties towards solution processed organic light emitting devices – C. Coya, C. Ruiz, AL. Alvarez, S. Alvarez-Garcia, EM. Garcia-Frutos, B. Gomez-Lor, A. de Andres, Org Electron 13, 2138 (2012).
  • Stable organic radical stacked by in situ coordination to rare earth cations in MOF materials – F. Gandara, N. Snejko, A. de Andres, JR. Fernandez, JC. Gomez-Sal, E. Gutierrez-Puebla, A. Monge, Rsc Advances 2, 949 (2012).
  • Synthesis and tunable emission of novel polyfluorene co-polymers with 1,8-naphthalimide pendant groups and application in a single layer-single compon – C. Coya, R. Blanco, R. Juarez, R. Gomez, R. Martinez, A. de Andres, AL. Alvarez, C. Zaldo, MM. Ramos, A. de la Pena, C. Seoane, JL. Segura, Eur Polym J 46, 1778 (2010).
  • Crystal structure and charge-transport properties of N-trimethyltriindole: Novel p-type organic semiconductor single crystals – EM. Garcia-Frutos, E. Gutierrez-Puebla, MA. Monge, R. Ramirez, P. de Andres, A. de Andres, R. Ramirez, B. Gomez-Lor, Org Electron 10, 643 (2009).
  • Full-solution-processed blue organic light emitting device based on a fluorescent 1,3,5-tristyrylbenzene stilbenoid small molecule – C. Coya, A. de Andres, C. Zaldo, AL. Alvarez, B. Arredondo, R. Gomez, JL. Segura, C. Seoane, J Appl Phys 105, 044510 (2009).
  • A rare-earth MOF series: Fascinating structure, efficient light emitters, and promising catalysts – F. Gandara, A. de Andres, B. Gomez-Lor, E. Gutierrez-Puebla, M. Iglesias, MA. Monge, DM. Proserpio, N. Snejko, Cryst Growth Des 8, 378 (2008).
  • Self-sterilized EVOH-TiO2 nanocomposites: Interface effects on biocidal properties – ML. Cerrada, C. Serrano, M. Sanchez-Chaves, M. Fernandez-Garcia, F. Fernandez-Martin, A. de Andres, RJJ. Rioboo, A. Kubacka, M. Ferrer, M. Fernandez-Garcia, Adv Funct Mater 18, 1949 (2008).
  • Pressure induced structural transformations in catalytically active NH4[Eu(SO4)(2)] studied by light scattering – A. de Andres, J. Sanchez-Benitez, C. Cascales, N. Snejko, E. Gutierrez-Puebla, A. Monge, Chem Phys Lett 451, 106 (2008).
  • Optical study of SrAl1.7B0.3O4 : Eu, R (R = Nd, Dy) pigments with long-lasting phosphorescence for industrial uses – J. Sanchez-Benitez, A. de Andres, M. Marchal, E. Cordoncillo, MV. Regi, P. Escribano, J Solid State Chem 171, 273 (2003).

Magnetic semiconductor oxides, transparent conductive oxides.

 

  • Amorphous-nanocrystalline Al doped ZnO transparent conducting thin films – X. Diez-Betriu, R. Jimenez-Rioboo, J. Sanchez-Marcos, E. Cespedes, A. Espinosa, A. de Andres, J Alloy Compd 536, S445 (2012).
  • Origin of the Magnetism in Undoped and Mn-Doped SnO2 Thin Films: Sn vs Oxygen Vacancies – A. Espinosa, N. Sanchez, J. Sanchez-Marcos, A. de Andres, MC. Munoz, J Phys Chem C 115, 24054 (2011).
  • Confinement effects on the low temperature magnetic structure of MnP nanocrystals – A. de Andres, R. Ramirez-Jimenez, M. Garcia-Hernandez, S. Lambert-Milot, RA. Masut, Appl Phys Lett 99, 182506 (2011).
  • MnP films and MnP nanocrystals embedded in GaP epilayers grown on GaP(001): Magnetic properties and local bonding structure – A. de Andres, A. Espinosa, C. Prieto, M. Garcia-Hernandez, R. Ramirez-Jimenez, S. Lambert-Milot, RA. Masut, J Appl Phys 109, 113910 (2011).
  • Ferromagnetism in SnO2-based multilayers: Clustering of defects induced by doping – A. Espinosa, M. Garcia-Hernandez, N. Menendez, C. Prieto, A. de Andres, Phys Rev B 81, 064419 (2010).
  • Induced ferromagnetism in Mn3N2 phase embedded in Mn/Si3N4 multilayers – E. Cespedes, E. Roman, Y. Huttel, J. Chaboy, J. Garcia-Lopez, A. de Andres, C. Prieto, J Appl Phys 106, 043912 (2009).
  • X-ray absorption and magnetic circular dichroism characterization of a novel ferromagnetic MnNx phase in Mn/Si3N4 multilayers – E. Cespedes, Y. Huttel, L. Martinez, A. de Andres, J. Chaboy, M. Vila, ND. Telling, G. van der Laan, C. Prieto, Appl Phys Lett 93, 252506 (2008).
  • Structural study of undoped and (Mn, In)-doped SnO2 thin films grown by RF sputtering – A. Espinosa, N. Menendez, C. Prieto, A. de Andres, J Non-cryst Solids 354, 5269 (2008).
  • Metal-organic vapor phase epitaxy of crystallographically oriented MnP magnetic nanoclusters embedded in GaP(001) – S. Lambert-Milot, C. Lacroix, D. Menard, RA. Masut, P. Desjardins, M. Garcia-Hernandez, A. de Andres, J Appl Phys 104, 083501 (2008).
  • High temperature ferromagnetism in mn based multilayers of wide gap semiconductors: Mn/ZnO and Mn/SnO2: the role of interfaces – A. Espinosa, E. Cespedes, C. Prieto, M. Garcia-Hernandez, A. de Andres, J Korean Phys Soc 52, 1394 (2008).
  • Interface and Mn valence effects in ferromagnetic insulating multilayers based on Mn and tin oxide – A. Espinosa, E. Cespedes, C. Prieto, M. Garcia-Hernandez, J. Rubio-Zuazo, A. de Andres, J Appl Phys 103, 07D129 (2008).
  • Magnetic and optical characterization of ferromagnetic SnO2/Mn multilayers – A. Espinosa, C. Prieto, M. Garcia-Hernandez, A. de Andres, J Magn Magn Mater 316, E207 (2007).
  • Correlation between Mn oxidation state and magnetic behavior in Mn/ZnO multilayers prepared by sputtering – E. Cespedes, J. Garcia-Lopez, M. Garcia-Hernandez, A. De Andres, C. Prieto, J Appl Phys 102, 033907 (2007).

Oxides with colossal magnetoresistance

 

Mecanisms of the magnetoresistance, phase coexistance and segregation, inhomogeneities, distortions and local structure of magnetic oxides. Phonons and electron-phonon interactions.

Ultra thin films and heterostructures of manganese perovskites and insulating oxides. Structure, interfases, substrate effects. Effects in the magnetic and transport properties related to the nanometric scale.

Selected publications

  • Ferroelectric substrate effects on the magnetism, magnetotransport, and electroresistance of La0.7Ca0.3MnO3 thin films on BaTiO3 – A. Alberca, C. Munuera, J. Tornos, FJ. Mompean, N. Biskup, A. Ruiz, NM. Nemes, A. de Andres, C. Leon, J. Santamaria, M. Garcia-Hernandez, Phys Rev B 86, 144416 (2012).
  • Exotic magnetic anisotropy map in epitaxial La0.7Ca0.3MnO3 films on BaTiO3 – A. Alberca, NM. Nemes, FJ. Mompean, N. Biskup, A. de Andres, C. Munuera, J. Tornos, C. Leon, A. Hernando, P. Ferrer, GR. Castro, J. Santamaria, M. Garcia-Hernandez, Phys Rev B 84, 134402 (2011).
  • Enhancement of the Curie Temperature along the Perovskite Series RCu(3)Mr(4)O(12) Driven by Chemical Pressure of R3+ Cations (R = Rare Earths) – J. Sanchez-Benitez, JA. Alonso, MJ. Martinez-Lope, A. de Andres, MT. Fernandez-Diaz, Inorg Chem 49, 5679 (2010).
  • Anisotropy, orbital order, and colossal electroresistance in untwinned La0.9Sr0.1MnO3 single crystals – A. de Andres, N. Biskup, M. Garcia-Hernandez, YM. Mukovskii, Phys Rev B 79, 014437 (2009).
  • Persistent ferromagnetism in antiferromagnetic Pr0.6Ca0.4MnO3 – N. Biskup, A. de Andres, M. Garcia-Hernandez, Phys Rev B 78, 184435 (2008).
  • Colossal electroresistance without colossal magnetoresistance in La0.9Sr0.1MnO3 – N. Biskup, A. de Andres, NM. Nemes, M. Garcia-Hernandez, KV. Glazyrin, YM. Mukovskii, Appl Phys Lett 90, 222502 (2007).
  • Electroelasticity in charge ordered Pr5/8Ca3/8MnO3 – N. Biskup, A. de Andres, Phys Rev B 74, 184403 (2006).
  • Nonlinear electrical characteristics of the low-bandwidth manganites R1-xCaxMnO3(R=Pr,Nd,Ho,Er; x=0.3-0.5) – N. Biskup, A. de Andres, IM. Ochando, MT. Casais, Phys Rev B 73, 184404 (2006).
  • Suppression of ferromagnetic double exchange by vibronic phase segregation – F. Rivadulla, M. Otero-Leal, A. Espinosa, A. de Andres, C. Ramos, J. Rivas, JB. Goodenough, Phys Rev Lett 96, 016402 (2006).
  • Peculiar magnetic behavior of the TbCu3Mn4O12 complex perovskite – J. Sanchez-Benitez, JA. Alonso, A. de Andres, MJ. Martinez-Lope, JL. Martinez, A. Munoz, Chem Mater 17, 5070 (2005).
  • Huge magnetoresistance in ultrathin La0.7Ca0.3MnO3 films: The role of superparamagnetic clusters and domain walls – JM. Colino, A. de Andres, Appl Phys Lett 87, 142509 (2005).
  • Origin of the colossal dielectric response of Pr0.6Ca0.4MnO3 – N. Biskup, A. de Andres, JL. Martinez, C. Perca, Phys Rev B 72, 024115 (2005).
  • Evidence of two different Mn states in CaCu3Mn4O12 derivatives with colossal magnetoresistance – J. Sanchez-Benitez, C. Prieto, A. de Andres, JA. Alonso, MJ. Martinez-Lope, MT. Casais, Phys Rev B 70, 024419 (2004).
  • Doping effects on the valence band of Tl2Mn2O7 pyrochlores: Relation to magnetoresistance – J. Sanchez-Benitez, A. de Andres, C. Prieto, J. Avila, L. Martin-Carron, JL. Martinez, JA. Alonso, MJ. Martinez-Lope, MT. Casais, Appl Phys Lett 84, 4209 (2004).
  • Excitations of the orbital order in RMnO3 manganites: Light scattering experiments – L. Martin-Carron, A. de Andres, Phys Rev Lett 92, 175501 (2004).
  • Enhanced magnetoresistance in the complex perovskite LaCu3Mn4O12 – JA. Alonso, J. Sanchez-Benitez, A. De Andres, MJ. Martinez-Lope, MT. Casais, JL. Martinez, Appl Phys Lett 83, 2623 (2003).
  • Disorder-induced phase segregation in La2/3Ca1/3MnO3 manganites – M. Garcia-Hernandez, A. Mellergard, FJ. Mompean, D. Sanchez, A. de Andres, RL. McGreevy, JL. Martinez, Phys Rev B 68, 094411 (2003).
  • Structural and magnetic properties of ultrathin epitaxial La0.7Ca0.3MnO3 manganite films: Strain versus finite size effects – A. de Andres, J. Rubio, G. Castro, S. Taboada, JL. Martinez, JM. Colino, Appl Phys Lett 83, 713 (2003).
  • Preparation, crystal and magnetic structure, and magnetotransport properties of the double perovskite CaCu2.5Mn4.5O12 – J. Sanchez-Benitez, JA. Alonso, MJ. Martinez-Lope, MT. Casais, JL. Martinez, A. de Andres, MT. Fernandez-Diaz, Chem Mater 15, 2193 (2003).
  • Pressure effect in the structure, transport properties, and magnetic interactions of Tl2Mn2O7 pyrochlore derivatives – P. Velasco, JA. Alonso, VG. Tissen, WG. Marshall, MT. Casais, MJ. Martinez-Lope, A. de Andres, C. Prieto, JL. Martinez, Phys Rev B 67, 104403 (2003).
  • Raman phonons as a probe of disorder, fluctuations, and local structure in doped and undoped orthorhombic and rhombohedral manganites – L. Martin-Carron, A. de Andres, MJ. Martinez-Lope, MT. Casais, JA. Alonso, Phys Rev B 66, 174303 (2002).
  • Low field magnetoresistance at the metal-insulator transition in epitaxial manganite thin films – A. de Andres, S. Taboada, JM. Colino, R. Ramirez, M. Garcia-Hernandez, JL. Martinez, Appl Phys Lett 81, 319 (2002).
  • Coulomb blockade versus intergrain resistance in colossal magnetoresistive manganite granular films – M. Garcia-Hernandez, F. Guinea, A. de Andres, JL. Martinez, C. Prieto, L. Vazquez, Phys Rev B 61, 9549 (2000).
  • Low-temperature magnetoresistance in polycrystalline manganites: connectivity versus grain size – A. de Andres, M. Garcia-Hernandez, JL. Martinez, C. Prieto, Appl Phys Lett 74, 3884 (1999).
  • Conduction channels and magnetoresistance in polycrystalline manganites – A. de Andres, M. Garcia-Hernandez, JL. Martinez, Phys Rev B 60, 7328 (1999).