Alejandro R. Goñi

Alejandro R. Goñi

Institut de Ciència de Materials de Barcelona

Engineering Sciences

I graduated in physics in 1985 at the Balseiro Institute, Argentina. In 1989 I finished my PhD at the Max-Planck Institute FKF in Stuttgart with Prof. M. Cardona. It followed a two-year postdoc at AT&T Bell Labs in Murray Hill, USA, and back at MPI-FKF Stuttgart for three years. In 1996 I moved to the Technical University of Berlin for an appointment as Research & Teaching Associate, where in 1998 I completed my Habilitation. In 1999 I received the Karl-Scheel Prize from the Physical Society of Berlin for my contributions to the field of high-pressure semiconductor physics. In November 2003, I joined ICMAB-CSIC as ICREA, co-founding the Optoelectronic Properties of Nanostructured Materials (NANOPTO) group. At ICMAB I created a facility for optical spectroscopy with micro/nanometer-scale resolution and set up a lab for high-pressure physics.

Research interests

I am an experimental physicist with broad interests and experience in solid-state physics, optical spectroscopy (Raman scattering, photoluminescence, etc.), nanoscience and technology, energy materials, low-dimensional materials physics, and high-pressure techniques. Basically, I use light as a probe of physical properties of all kinds of molecular, organic and/or inorganic nanomaterials, looking for new behaviors or phenomena that arise as a direct consequence of the reduced dimensionality and/or size of the system under study. Although I perform basic research, I always have a clear application in mind, such as improving the performance of optoelectronic devices, boosting thermoelectric and/or photovoltaic properties, enhancing solar energy harvesting, etc. I am leading group activities on high pressure physics, metal-halide perovskites, plasmonic hot-electron emitters and the development of novel light-souce concepts.

Selected publications

- Fasahat S, Fiuza-Maneiro N, Schäfer B, Xu K, Gómez-Graña S, Alonso MI, Polavarapu L & Goñi AR 2025, 'Sign of the Gap Temperature Dependence in CsPb(Br,Cl)3 Nanocrystals Determined by Cs-Rattler Mediated Electron-Phonon Coupling', J. Phys. Chem. Lett. 16, 1134-1141.
- Fasahat S, Schäfer B, Xu K, Fiuza-Maneiro N, Gómez-Graña S, Alonso M I, Polavarapu L & Goñi AR, 2025 'Absence of Anomalous Electron-Phonon Coupling in the Near-Ambient Gap Temperature Renormalization of CsPbBr3 Nanocrystals', J. Phys. Chem. C, 129, 453−463.
- Pérez LA, Hu J, Mendoza-Carreño J, Garriga M, Alonso MI, Arteaga O, Goñi AR, Mihi A 2025 'Strong Chiro-Optical Activity of Plasmonic Metasurfaces with Inverted Pyramid Arrays' ACS Appl. Mater. Interfaces, 17, 15824-15835.

Selected research activities

--Co-PI of project PID2024-163010OB-I00, Customizing organic solar cells for targeted applications (PV-MENU), from the Spanish MICIU, 337.500,- EUR + FPI grant, Sep. 2025 - Aug. 2028.
--Department Head of the Nanostructured Materials for Optoelectronics and Energy Harvesting Dept., ICMAB-CSIC, Nov. 2025 - Oct. 2029.