Solvent annealing
AssigneeQueen Mary University of London
InventorsJoseph Briscoe, Sinclair Ryley Ratnasingham
Life of this patent
Estimating the term…
Abstract
A post-deposition treatment universally applicable to a wide range of perovskite solar cell configurations and architectures. The methodology yields significant improvements in device efficiency and lifetime coupled with a reduction in inherent batch-to-batch variability in all performance metrics. Such improvements are achieved following an aerosol-induced recrystallisation of solution-deposited MAPbI3 thin films that result in a significant enlargement and improved homogeneity of grain size. The aerosol treatment is demonstrated as being suitable for a range of active layer thicknesses, interlayer choices, architectures and device active areas.
Claims21
A method of solvent annealing comprising:
- exposing a perovskite layer to a laminar flow of a solvent aerosol, wherein the laminar flow produces a boundary layer between the laminar flow and the perovskite layer;
- and
- heating the perovskite layer to a predetermined temperature ranging from 50° C. to 200° C. during the exposing.
A method of solvent annealing comprising:
- exposing a perovskite layer to a laminar flow of a solvent aerosol, wherein the laminar flow consists substantially of a laminar flow of the solvent aerosol;
- and
- heating the perovskite layer to a predetermined temperature ranging from 50° C. to 200° C. during the exposing.
Dependencies are inferred from the claim text.