Method for inkjet printing an organic-inorganic perovskite
摘要
說(shuō)明書(shū)
In an embodiment, said perovskite precursor solution comprises a divalent metal cation selected from the group consisting of Cu2+, Ni2+, Co2+, Fe2+, Mn2+, Cr2+, Pd2+, Cd2+, Ge2+, Sn2+, Pb2+, Eu2+, Yb2+ of two or more of said metal cations.
In a preferred embodiment, said metal cations are selected from Pd2+ and/or Sn2+.
The perovskite precursor solution preferably comprises the anions required to form said perovskite. The anions are preferably added as anions of said organic and inorganic cations, respectively. The anions in the precursor solution are preferably independently selected from the anions specified elsewhere in this specification, in particular halide anions, CN?, NCO?, NCS?, BF4?, and NCSe?. Preferred halides are I?, Cl?, Br? and F?.
The invention preferably comprises the step of producing an organic-inorganic perovskite. Examples of such perovskites that are in particular suitable for perovskite solar cells have been disclosed. The perovskite deposited in accordance of the invention preferably distinguishes form previous reported perovskites in that a mixed organic cation perovskite is deposited, wherein said precipitation retarding compound preferably replaces some of the organic cation reported in such known perovskites.
In an embodiment, the organic-inorganic perovskite that is deposited in accordance of the invention has a structure formula selected from formula (II)-(VII): AMX3??(II) ANX4??(III) AA′MX4??(IV) AA′N2/3X4??(V) BN2/3X4??(VI)
