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Project type/Form of grant
Project grant
Title [sv]
Jon-förskjutning och defektfysik i solcellsmaterial av metallhalid-perovskiter
Title [en]
Ion-Displacement and Defect Physics in Metal Halide Perovskite Solar Cell Materials
Abstract [en]
Hybrid metal halide perovskite solar cells represent a new photovoltaic technology that potentially offers efficient solar cells at very low cost and short energy payback times. Fundamental knowledge about the ion-displacements, the defect physics, and the relation to the material stability, however, are still seriously lacking. This project will quantify ion-displacements and defects as a function of material composition in the different positions in the perovskite crystals using Stark-, and Raman spectroscopies as well as complementing quantum mechanical calculations. In particular, effects from lead-exchange with Sn and Bi as well as interchanging A-site cations in the perovskite structure will be investigated with respect to the underlying thermalization processes, photoinduced ion displacements, trap state mediation and possibilities for defect tolerance engineering in the system. Photoluminescence (PL) mapping, scanning Kelvin probe, and Raman spectroscopy will be combined with Stark spectroscopy to find and distinguish intrinsic lattice defects from effects from photoinduced ion displacement. State-of-the-art materials will be obtained in collaboration with several of the leading groups in the world where the project will focus on fundamental characterization and understanding of the underlying processes of the defect physics in this class of materials by a combination of experimental and theoretical methods.
Principal InvestigatorEdvinsson, Tomas
Coordinating organisation
Uppsala University
Funder
Period
2020-01-01 - 2023-12-31
National Category
Condensed Matter PhysicsMaterials ChemistryChemical Process Engineering
Identifiers
DiVA, id: project:6658Project, id: 2019-05591_VR