SPEAKER PROFILE |
 Dr. László Forró Laboratory of Physics of Complex Matter, EPFL SWITZERLAND |
From synthesis to application of photovoltaic perovskite nanowires
Abstract
Endre Horváth, Massimo Spina, Bálint Náfrádi and László Forró
In the last few years, the organolead halide perovskite CH3NH3PbI3 and its derivatives have been found to be very efficient light harvesters and ambipolar semiconductors revolutionizing the field of solid-state solar cells. Its low temperature fabrication process allowed to design simpler solar cell structures (i.e. from mesoscopic to planar junctions) which yielded efficiencies approaching 20%.
We have shown that one can synthesize nanowires of this photovoltaic perovskite (Horváth et al, in Nano Letters DOI: 10.1021/nl5020684) which in association with carbon nanostructures (carbon nanotubes and graphene) makes outstanding composites with rapid and strong photoresponse. They can serve as conducting electrodes and as central components of sensors, detectors. The demonstration of the performance of several devices based on these composite structures will be given.
In his Laboratory of Physics of Complex Matter (lpmc.epfl.ch/) he is leading an interdisciplinary research activity. Within the School and beyond he tries to create an experiment-driven partnership with a scientific focus on correlated matter, the design of new nanostructured materials and biological physics. This vision has led him to the bi-annual organization of a conference in Dubrovnik (http://dubrovnik.epfl.ch/) with the theme: From Solid State to Biophysics (since 2002). Among the distinguished speakers were: P-G. de Gennes, J.R. Schrieffer, I. Giaver, Albert Libchbaer, A. Müller…)
His honors and awards: Member of the Hungarian Academy of Sciences; Member of the Croatian Academy of Sciences; Doctor Honoris Causa of the University of Szeged, Hungary; Spiridon Brusina Award of the Croatian Society of Natural Sciences.
In the last few years, the organolead halide perovskite CH3NH3PbI3 and its derivatives have been found to be very efficient light harvesters and ambipolar semiconductors revolutionizing the field of solid-state solar cells. Its low temperature fabrication process allowed to design simpler solar cell structures (i.e. from mesoscopic to planar junctions) which yielded efficiencies approaching 20%.
We have shown that one can synthesize nanowires of this photovoltaic perovskite (Horváth et al, in Nano Letters DOI: 10.1021/nl5020684) which in association with carbon nanostructures (carbon nanotubes and graphene) makes outstanding composites with rapid and strong photoresponse. They can serve as conducting electrodes and as central components of sensors, detectors. The demonstration of the performance of several devices based on these composite structures will be given.
Bio
László Forró obtained his B.S. at Eötvös Loránd University, Budapest and M.S. at Université Paris XI in physics. He received his PhD at the University of Zagreb in 1985. He was visiting scientist at various places including Ruhr Universität Bochum, CEA Grenoble, Ecole Polytechnique Paris, SUNY at Stony Brook/Brookhaven. He was appointed at the Ecole Polytechnique Fédérale de Lausanne in1991 as senior research associate. He was promoted into a full professorship in 2002. Today he holds the chair of Nanostructures and Novel Electronic Materials.In his Laboratory of Physics of Complex Matter (lpmc.epfl.ch/) he is leading an interdisciplinary research activity. Within the School and beyond he tries to create an experiment-driven partnership with a scientific focus on correlated matter, the design of new nanostructured materials and biological physics. This vision has led him to the bi-annual organization of a conference in Dubrovnik (http://dubrovnik.epfl.ch/) with the theme: From Solid State to Biophysics (since 2002). Among the distinguished speakers were: P-G. de Gennes, J.R. Schrieffer, I. Giaver, Albert Libchbaer, A. Müller…)
His honors and awards: Member of the Hungarian Academy of Sciences; Member of the Croatian Academy of Sciences; Doctor Honoris Causa of the University of Szeged, Hungary; Spiridon Brusina Award of the Croatian Society of Natural Sciences.