Descripción del proyecto
Se impulsa la eficiencia y durabilidad de unas prometedoras celdas fotovoltaicas de perovskita
Las perovskitas son los niños prodigio de los materiales para celdas fotovoltaicas. En poco más de un decenio, se han multiplicado por más de diez las eficiencias de las celdas fotovoltaicas de perovskita, se han batido récords y se ha allanado el camino para la adopción generalizada de métodos de conversión de energía solar a electricidad renovables, rentables y altamente eficientes. Entre los pocos desafíos pendientes figuran la mayor optimización de la dinámica carga-portador y el aumento de la estabilidad a largo plazo, sin los cuales no se pueden alcanzar los objetivos de coste y rendimiento. El proyecto HES-PSC-FCTL, financiado con fondos europeos, está desarrollando un nuevo concepto para alcanzar estos objetivos basándose en capas funcionalizadas de transporte de carga y en el grafeno.
Objetivo
During the past years, photovoltaic technology has shown its greatest potential to be scaled up to meet future energy requirement. Perovskite solar cell (PSC) as a promising next-generation photovoltaic technology has attracted great attention, but its performance is still limited by charge carrier collection efficiency and long-time stability.
In this project, the applicant aims to employ novel all-inorganic charge transport layers to fabricate high efficiency and stable inverted planar perovskite solar cells (power conversion efficiency > 23%), based on a functionalized charge transport layer- a Lanthanum(La)-doped BaSnO3(LBSO)/graphene bi-layer. LBSO has a cubic perovskite structure which provides an opportunity to further improve the quality of the interface between the electron transport layer and the perovskite film in conjugation with atmosphere annealing process, which we term “LBSO-template induced perovskite re-nucleation and crystal growth”. A compact conductive graphene layer inserted between the LBSO layer and the metal contact can act as a spacer layer to block the mobile ion and moisture penetration. That will not only improve the device stability (maintain initial efficiency > 90% after 1000 h illumination), but also give a chance to reveal the device degradation mechanism in depth.deeply.
Ámbito científico
- engineering and technologymaterials engineeringcrystals
- engineering and technologynanotechnologynano-materialstwo-dimensional nanostructuresgraphene
- natural sciencescomputer and information sciencesinternettransport layer
- engineering and technologyenvironmental engineeringenergy and fuelsrenewable energysolar energyphotovoltaic
Programa(s)
Régimen de financiación
MSCA-IF-EF-ST - Standard EFCoordinador
GU2 7XH Guildford
Reino Unido