Hashmi, Syed GhufranÖzkan, MerveMartineau, DavidLi, XiongZakeeruddin, Shaik MohammedGraetzel, Michael2019-12-052019-12-052019-12-052018https://infoscience.epfl.ch/handle/20.500.14299/163630The present invention provides a method for depositing an organic-inorganic perovskite, the method comprising the step of depositing a perovskite precursor solution comprising one or more organic cation, wherein said precursor solution is preferably deposited by inkjet printing. The method is particularly useful in the manufacture of perovskite solar cells. For depositing the perovskite, a perovskite precursor solution or ink is preferably used, which comprises an organic cation carrying an anchoring group, such as 5-ammonium valeric acid. Surprisingly, the presence of the latter compound renders the precursor solutions stable and suitable for inkjet printing.patentUS11177440US2020028081EP3494605CN109804480WO2018024777EP327996056740071