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Method for inkjet printing an organic-inorganic perovskite

專利號(hào)
US11177440B2
公開日期
2021-11-16
申請(qǐng)人
AALTO UNIVERSITY FOUNDATION; ECOLE POLYTECHNIQUE FEDERALE DE LAUSANNE (EPFL); SOLARONIX S.A.（FI Helsinki CH Ecublens CH Aubonne）
發(fā)明人
Syed Ghufran Hashmi; Merve Ozkan; David Martineau; Xiong Li; Shaik Mohammed Zakeeruddin; Michael Graetzel
IPC分類
H01L51/42; H01L51/00
技術(shù)領(lǐng)域
perovskite,solar,precursor,in,ink,printing,cation,preferably,said,inkjet
地域： Helsinki

摘要

The 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 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.

說(shuō)明書

X1, X2, X3 and X4 are independently selected from the anions disclosed in this specification, and may be the same or different,
M is a bivalent metal cation selected from the metal cations disclosed elsewhere in this specification,
D is a cation selected from the “precipitation retarding compounds” as disclosed elsewhere, for example a cation of formula (I).

In formula (XIII), Z may be 0, resulting in a mixed organic cation perovskite comprising two organic cations.

The invention further envisages the perovskite of formula (II) above AMX3 comprises overall two to four different organic cations D, A1, A2, and A3:
DYA1ZA2KA31?Y?Z?KMX1YX2ZX31?Y?ZX41?Y?Z?KX52??(XIV)
wherein Y+Z+K<1; Y>0, and Z≥0, K≥0.
X1, X2, X3, X4 and X5 are independently selected from the anions disclosed in this specification, and may be the same or different,
M is a divalent metal cation selected from the metal cations disclosed elsewhere in this specification,
D is a cation selected from the “precipitation retarding compounds” as disclosed elsewhere, preferably a cation of formula (I).

In accordance with the invention, the perovskites of formulae (III)-(VII) may be extended in analogy with the above exemplary formulae (VIII)-(XIV) to represent mixed organic cation and/or mixed anion perovskites.

權(quán)利要求

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