Les activitats del grup es centren en el desenvolupament de nous materials i processos avançats per a tecnologies fotovoltaiques de capa fina compatibles amb els requisits de sostenibilitat, compatibilitat amb la producció en massa industrial amb un impacte ambiental molt baix, alt eficiència i baix cost de fabricació. El grup SEMS és molt actiu en el desenvolupament de tecnologies de capes primes basades en compostos inorgànics de calcogen, incloent tecnologies que ja estan en fase d’explotació industrial, com les relacionades amb Cu (In, Ga) (S, Se) 2 (CIGS) – així com tecnologies emergents basades en nous materials com ara compostos de kesterita (Cu2ZnSn ((S, Se) 4 (CZTS)) i nous calcogènids de baixa dimensió que inclouen Sb2Se3. Això inclou també una intensa activitat en la investigació i el desenvolupament de metodologies avançades de caracterització apte per a aplicacions de control de qualitat i control de processos.
Alejandro Pérez Rodríguez (Catedràtic) perez_ro(at)ub.edu
Lorenzo Calvo Barrio (Associat)
Victor Izquierdo Roca (External Collaborator-Senior researcher at IREC)
Marcel Placidi (External Collaborator-Senior researcher at IREC)
Cu2O-Cu@Titanium Surface with Synergistic Performance for Nitrate-to-Ammonia Electrochemical Reduction. Chavez M.E.; Biset-Peiró M.; Murcia-López S.; Morante J.R. 2023, ACS Sustainable Chemistry and Engineering, 11, 9. Doi: 10.1021/acssuschemeng.2c05885
Hydrothermal Fabrication of Carbon-Supported Oxide-Derived Copper Heterostructures: A Robust Catalyst System for Enhanced Electro-Reduction of CO2 to C2H4. 2023, ChemSusChem, 16, 19, e202300344. Doi: 10.1002/cssc.202300344
Characterization of the Stability of Indium Tin Oxide and Functional Layers for Semitransparent Back-Contact Applications on Cu(in,Ga)Se2 Solar Cells. Fonoll-Rubio R., Placidi M., Hoelscher T., Thomere A., Li-Kao Z.J., Guc M., Izquierdo-Roca V., Scheer R., Pérez-Rodríguez A. Solar RRL, 6, 7, 2101071, 2022
Ultrathin Wide-Bandgap a-Si:H-Based Solar Cells for Transparent Photovoltaic Applications. Lopez-Garcia A.J., Blazquez O., Voz C., Puigdollers J., Izquierdo-Roca V., Pérez-Rodríguez A. Solar RRL, 6, 1, 2100909, 2022
Combinatorial Analysis Methodologies for Accelerated Research: The Case of Chalcogenide Thin-Film Photovoltaic Technologies. Fonoll-Rubio R., Becerril-Romero I., Vidal-Fuentes P., Grau-Luque E., Atlan F., Perez-Rodriguez A., Izquierdo-Roca V., Guc M. Solar RRL, 6, 9, 2200235, 2022
To grind or not to grind? The influence of mechanical and thermal treatments on the Cu/Zn disorder in Cu2ZnSn(SxSe1-x)4 monograins. Gurieva G., Rotaru V., Ernits K., Siminel N., Manjón-Sanz A., Kirkham M., Perez-Rodriguez A., Guc M., Meissner D., Schorr S. Solar Energy Materials and Solar Cells, 248, 112009, 2022
Insights into interface and bulk defects in a high efficiency kesterite-based device. Fonoll-Rubio R., Andrade-Arvizu J., Blanco-Portals J., Becerril-Romero I., Guc M., Saucedo E., Peiró F., Calvo-Barrio L., Ritzer M., Schnohr C.S., Placidi M., Estradé S., Izquierdo-Roca V., Pérez-Rodríguez A. Energy and Environmental Science. 2021, 14, 1
Insights on the Thermal Stability of the Sb2Se3 Quasi-1D Photovoltaic Technology. Vidal-Fuentes P., Guc M., Becerril-Romero I., Sylla D., Alcobé X., Sánchez Y., Pérez-Rodríguez A., Saucedo E., Izquierdo-Roca V. Solar RRL. 2021, 5, 10, 2100517
Rear interface engineering of kesterite Cu2ZnSnSe4 solar cells by adding CuGaSe2 thin layers. Giraldo S., Fonoll-Rubio R., Jehl Li-Kao Z., Sánchez Y., Calvo-Barrio L., Izquierdo-Roca V., Pérez-Rodríguez A., Saucedo E. Progress in Photovoltaics: Research and Applications. 2021, 29.3
Tiwari K.J., Fonoll Rubio R., Giraldo S., Calvo-Barrio L., Izquierdo-Roca V., Placidi M., Sanchez Y., Pérez-Rodríguez A., Saucedo E., Jehl Li-Kao Z. Defect depth-profiling in kesterite absorber by means of chemical etching and surface analysis. Applied Surface Science. 2021, 540, 148342
Effective module level encapsulation of CIGS solar cells with Al2O3 thin film grown by atomic layer deposition. Zhang S.-T., Guc M., Salomon O., Wuerz R., Izquierdo-Roca V., Pérez-Rodríguez A., Kessler F., Hempel W., Hildebrandt T., Schneider N. Solar Energy Materials and Solar Cells. 2021, 222, 110914
Vibrational Properties of RbInSe2: Raman Scattering Spectroscopy and First-Principle Calculations. Guc M., Kodalle T., Kormath Madam Raghupathy R., Mirhosseini H., Kühne T.D., Becerril-Romero I., Pérez-Rodríguez A., Kaufmann C.A., Izquierdo-Roca V. Journal of Physical Chemistry C, 2020, 124(2)
Efficient Se-Rich Sb2Se3/CdS Planar Heterojunction Solar Cells by Sequential Processing: Control and Influence of Se Content. Vidal-Fuentes P., Placidi M., Sánchez Y., Becerril-Romero I., Andrade-Arvizu J., Jehl Z., Pérez-Rodríguez A., Izquierdo-Roca V., Saucedo E. Solar RRL, 2020, 4(7).
UV-Selective Optically Transparent Zn(O,S)-Based Solar Cells. Lopez-Garcia A.J., Bauer A., Fonoll Rubio R., Payno D., Jehl Li-Kao Z., Kazim S., Hariskos D., Izquierdo-Roca V., Saucedo E., Pérez-Rodríguez A. Solar RRL, 2020
Rear interface engineering of kesterite Cu2ZnSnSe4 solar cells by adding CuGaSe2 thin layers. Giraldo S., Fonoll-Rubio R., Jehl Li-Kao Z., Sánchez Y., Calvo-Barrio L., Izquierdo-Roca V., Pérez-Rodríguez A., Saucedo E. Progress in Photovoltaics: Research and Applications. 2020
Análisis combinatorial, síntesis y caracterización avanzada de nuevos materiales basados en calco-haluros de baja dimensión para su integración en dispositivos fotovoltaicos. PID2020-116719RB-C44. IP: Lorenzo Calvo Barrio. Ministerio de Ciencia e Innovación. (2021-2024)
DURACIS: Advanced global encapsulation solutions for long term stability in industrial flexible PV technologies (PCIN-2017-041), 2017-2020. SOLAR-ERA.NET European Program. Acciones de Programación Conjunta Internacional, Agencia Estatal de Investigacion
INFINITE-CELL: International cooperation for the development of cost efficient kesterite/c-Si thin film next generation tandem solar cells (H2020-MSCA-RISE.2017-777968). H2020. 2017-2021
STARCELL: Advanced strategies for substitution of critical raw materials in photovoltaics (H2020-NMBP-03-2016-720907). H2020. 2017-2019
Thin Film Photovoltaics Laboratory of the SEMS group: The Laboratory constitutes a platform for the modelling, development and evaluation of new processes and materials in advanced PV thin film technologies before their industrial implementation. The Laboratory has developed its own PV baseline technologies including electrodeposition based CIGS processes and two-step PVD based CZTS processes scalable up to 10×10 cm2 substrates with efficiency values that are among the highest ones achieved at world level in these technologies (> 11.8% efficiency for new Indium- and Gallium-free CZTS based devices with processes avoiding the use of hazardous compounds). The infrastructure available at the Laboratory includes: Three sputtering systems for the deposition of front and back contacts in PV technologies, thermal evaporator, a complete electrochemical and chemical workshop, reactive thermal treatment equipment, rapid thermal processes equipment, spray pyrolysis system under inert atmosphere, X-ray fluorescence, advanced Raman and Photoluminescence spectrometers, AAA solar simulator and spectral response.
The SEMS group has well consolidated international collaborations with a broad network of R+D centers that are among the world leading research groups in chalcogenide PV technologies, as HZB (Berlin, Germany), EMPA (Zurich, Switzerland), TNO (Holland), University of Luxembourg, Free University Berlin (Germany), Uppsala University (Sweden), IPVF (CNRS, Paris, France), ZSW (Stuttgart, Germany), IMEC (Belgium), Imperial College (UK), Northumbria University (UK), Martin-Luther University (Halle, Germany), Aix-Marseille University (France), CEA-LITEN (Grenoble, France), AIST (Japan), as well as with relevant European companies from the PV Technologies and Energy sectors as Flisom AG (Switzerland), Sunplugged Solare Energiesysteme GmbH (Austria), Manz CIGS Technology (Germany), IMRA (Toyota group, France), Advanced Coatings and Constructions Solutions (AC&CS, Belgium), Electricité de France (France), IBM (Yorktown Heights, NY, USA), AST Sistemas SL (grupo AYESA, Spain), FAE SAE (Spain), Ecopol Tech S.L. (Spain), Lenz Instruments SL (Spain), Eliosys S.A. (Belgium), Midsummer AB (Sweden), Onyx Solar (Spain). These collaborations have been enhanced by the strong activity of the SEMS group in the launching and coordination of international collaborative projects in these fields, including projects from the FP7 and H2020 programmes of the European Commission and from the SOLAR-ERA.NET European cooperative action.