Descripción del proyecto
Los materiales extraordinarios obtienen una estabilidad significativa mediante procesos de autoensamblaje
Los materiales bidimensionales como las películas finas suelen tener propiedades magnéticas, mecánicas, eléctricas y ópticas singulares de gran interés para científicos e ingenieros. Cuando se combinan dos de ellas (la creación de heteroestructuras tridimensionales o bidimensionales), las propiedades extraordinarias y exóticas permiten la innovación y dispositivos con un rendimiento revolucionario. Las perovskitas de haluro son una familia emergente de semiconductores ajustables cuya facilidad para procesarlos implica que también sean bastante inestables como heteroestructuras bidimensionales cuando se producen con métodos de procesamiento convencionales. El proyecto HeteroPlates, financiado con fondos europeos, desarrolla métodos para lograr heteroestructuras de perovskitas de haluro bidimensionales altamente estables para la próxima generación de optoelectrónica aprovechando conceptos de autoensamblaje coloidal.
Objetivo
Soaring demand for energy calls for out of the box thinking in research and design of materials to enable technology far beyond today’s standards.
What would be the perfect material for light mater interaction? What if we could utilize natural processes and assemble such a material, monolayer by monolayer with exquisite control over the resulting electronic structure. HeteroPlates will address these challenges using halide perovskite two dimensional nanoplates as building blocks and test beds for these ideas.
Metal halide perovskite are exciting the scientific community with high conversion efficiency and ease of device processability. But this is a double edge sword since it deems long term device stability an ongoing challenge, especially where perovskites interface other materials and create heterostructures.
Perovskite heterostructures play a crucial role, they influence electronic structure and affect device functionality, efficiency and most importantly stability. It is therefore critical to understand hetero-epitaxial growth and develop methods to create perovskite heterostructures and interfaces in a controlled fashion and characterize them at these length scales. My research program HeteroPlates will employ a bottom-up approach, taking advantage of the natural stability of colloidal 2D nanoplates, their atomically flat surfaces and tendency to self-organize. By means of colloidal synthesis, perovskite will grow, be grown and self -assembled into uniform monolayer controlled heterostructures. Using specially developed characterization methods we will achieve ground breaking control over imaging resolution of heterostructures.
These methods will be employed to create Proof-of-concept devices with new functionalities, aiming for translation of knowledge and methodologies garnered from colloidal heterostructures to higher hierarchy devices, serving future generations.
Programa(s)
Régimen de financiación
ERC-STG - Starting GrantInstitución de acogida
32000 Haifa
Israel