El día 29 de noviembre tendremos un seminario impartido por Nazario Martín sobre el desarrollo de materiales transportadores de huecos, con alta eficiencia rentables, y una buena estabilidad para células solares basadas en perovskitas.

 Fecha y lugar del mismo: 29 de noviembre de 2017. Salón de Actos del IQFR

Abstract: Methylammonium (MA) lead halide MAPbX3 perovskites are currently among the most active materials for photovoltaic applications. Actually, the PCE of perovskite-based solar cells (PSCs) has dramatically increased from the initial 3.8% to a recently certified 22.1%. Emerging from this groundbreaking discovery, an unprecedented scientific research has sprouted in the field of photovoltaics due to their exceptional physical properties. Therefore, the development of cost-effective HTMs with high efficiency along with a good stability is an important task to address. Planar and sulfur-rich polycyclic aromatic hydrocarbons bearing arylamine moieties have demonstrated to be a successful approach for designing new highly efficient HTMs for PSCs. Conventionally, the π-extended conjugation associated with the planar and electron-rich structure of the fused heterocycles enable them to show strong stacking through intermolecular interactions (π‒π, S···S), thereby bestowing enhanced hole-carrier mobilities. This behaviour is beatifully exemplified by sulfur-rich HTMs recently reported. The performance of the solar cells employing the novel HTMs were measured under simulated 1 sun irradiation and conversion efficiencies up to 19 % were observed.Simultaneously, we have also been engaged in electron transporting materials (ETMs) based on fullerenes, which has allowed to remove the TiO₂ from the PSC and obtaining efficiency values around 14%.