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Alejandro R. Goñi

Alejandro R. Goñi

Institut de Ciència de Materials de Barcelona

Engineering Sciences

I was born in Córdoba, Argentina, and graduated in physics in 1985 from Balseiro Institute, Argentina. In 1986 I moved to Germany for my PhD at the Max-Planck Institute FKF in Stuttgart with Prof. M. Cardona, which I finished in 1989. It followed a two-years postdoc at AT&T Bell Labs in Murray Hill, USA, and back to the MPI Stuttgart for three years. In 1996 I switched to the Technical University of Berlin for an appointment as Research & Teaching Associate. In 1999 I was awarded the Karl-Scheel Prize of the Physical Society of Berlin for my contributions to the field of high-pressure semiconductor physics. I joined the Optoelectronic Properties of Nanostructured Materials group at ICMAB-CSIC in November 2003 as ICREA. I created a facility for optical spectroscopy with micro and nanometer-scale resolution and set up a laboratory for high-pressure physics. I am leading group activities on high pressure, hybrid perovskites and plasmon-assisted hot-electron emitters.

Research interests

I am an experimental physicist with broad interests and expertise in solid-state physics, optical spectroscopy (Raman scattering, photoluminescence, etc.), nano-science and technology, energy materials, the physics of low-dimensional materials (superlattices, quantum wires and dots), highly correlated electron systems, and high-pressure techniques. Essentially, I use light as a probe of the physical properties of all kinds of organic and/or inorganic molecular and nano-materials, searching for new behaviors or phenomena that emerge as a direct consequence of the reduced dimensionality and/or size of the material system under study. Although I am pursuing basic research, almost all my lines of investigation have a clear application in mind, such as to improve the performance of optoelectronic devices based on nano-materials, enhance thermoelectric and/or photovoltaic properties, boost solar energy conversion efficiency, develop ultra-sensitive spectroscopic techniques, etc.

Selected publications

– Francisco-López A, Charles B, Alonso MI, Garriga M, Weller MT & Goñi AR 2021, ‘Photoluminescence of Bound-Exciton Complexes and Assignment to Shallow-Defects in Methylammonium/Formamidinium Lead Iodide Mixed Crystals‘, Adv. Optical Mater. 2001969/1-9.

– Rubino A, Francisco-López A, Barker A, Petrozza A, Calvo ME, Goñi AR & Míguez H 2021, ‘Disentangling Electron-Phonon Coupling and Thermal Expansion Effects in the Bandgap Renormalization of Perovskite Nanocrystals´, J. Phys. Chem. Lett. 12, 569-575.

– Jurado JP, Dörling B, Zapata-Arteaga O, Goñi AR, Campoy-Quiles M 2021, ‘Organic Photovoltaic-Thermoelectric Hybrid Devices: A Comparison of Different Geometries‘, J. Mater. Chem. C 9, 2123-2132.

– Ribeiro JM, Correia FC, Rodrigues FJ, Reparaz JS, Goñi AR, Tavares CJ 2021, ‘Transparent Niobium-Doped Titanium Dioxide Thin Films with High Seebeck Coefficient for Thermoelectric Applications’, Surf. Coat. Technol. 425, 127724.

Selected research activities

– Keynote talk: Understanding the Temperature & Pressure Dependence of Hybrid Perovskite Band Gaps, Joint 10th Asian Conf. on High Pressure Research (ACHPR10), 19th Int. Conf. on High Pressure Semiconductor Physics (HPSP19) & 3rd Int. Workshop on High Pressure Study on Superconductors (WHS3), Virtual, Korea, November 2021.

– Dissemination article: Pérez LA, Hu J, Alonso MI, & Goñi AR 2021, ‘Using Plasmons to Harness Infrared Solar Light‘,  Proj. Repos. J. 10, 118-121 (target: ca. 200.000 readers).

– Coordinator of Research Line RL1: Sustainable Energy Conversion & Storage Systems of the Severo Ochoa Centers of Excellence Award granted to ICMAB-CSIC, Ref. CEX2019-000917-S (FUNFUTURE), by the Spanish Ministry of Science & Innovation (MICINN).  Scientific Director: Rosa Palacín, 4 M€ for the period 01/01/2020 – 31/12/2023.

ICREA Memoir 2021