Indeed, there is currently no stable precursor ink as essentially required to produce precise infiltration and printing of perovskite absorbing layer while not damaging the print head of the printer cartridge. The case is more critical for carbon counter electrode based triple layer PSCs configuration in which the perovskite precursor ink needs to be infiltrated from the top of the thick porous carbon and has to go through a porous ZrO₂ layer before filling the pores of a mesoporous TiO₂ layer with the crystals of perovskite.

The present invention aims at providing a method for depositing an organic-inorganic perovskite by printing technology, in particular by inkjet printing.

It is an objective of the invention to provide an ink suitable to produce a perovskite while having the properties required to enable printing of the perovskite.

It is an objective of the invention to enable provide a method that allows the production of a solar cell entirely by scalable technologies, in particular the steps including the deposition of a dense semiconductor layer, a mesoporous semiconductor layer, possibly an insulating layer, a counter electrode, and in particular the perovskite light harvester. It is an objective of the invention to enable the printing of a perovskite layer, in particular by inkjet printing.

It is an objective of the invention to render the production of perovskite solar cells amenable to up-scaling and/or industrial production.

It is also an objective to provide a reliable, precise and/or reproducible method for depositing a perovskite, in particular a precise amount of perovskite over a particular surface.