Method for inkjet printing an organic-inorganic perovskite
摘要
說明書
The advantages of the present invention are most apparent if the precursor solution comprises all components required to form said organic-inorganic perovskite, because in this case there is generally an increased risk of undesired crystal formation, for example before application of the precursor solution. In the case of a printing ink, the crystal formation may occur on surface of the ink cartridge, at the nozzle, resulting in clogging of the nozzle. In particular, the invention addresses the problem of providing a perovskite precursor solution that is stable and suitable for printing techniques, such as inkjet printing.
In an embodiment, said precursor solution further comprises an inorganic cation, preferably a metal cation, and anions required for forming said organic-inorganic perovskite.
In accordance with the above, the perovskite precursor solution preferably comprises an inorganic cation, preferably a metal cation that will be present in the perovskite to be deposited.
In an embodiment, the inorganic cation is selected from divalent and trivalent metal cations, depending on the perovskite to be produced. In an embodiment, the inorganic cation is selected from the group consisting of Cu2+, Ni2+, Co2+, Fe2+, Mn2+, Cr2+, Pd2+, Zn2+, Cd2+, Ge2+, Sn2+, Pb2+, Eu2+, Yb2+, Bi3+ and Sb3+ and a combination of two or more of said metal cations.
