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Method for inkjet printing an organic-inorganic perovskite

專利號
US11177440B2
公開日期
2021-11-16
申請人
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.

說明書

A hole transport layer may but need not be provided between said light harvester layer 3 and said current providing layer 6. A hole transport layer may comprise an organic hole transport material. In an embodiment, the solar cell prepared in accordance with the invention lacks a hole transport layer and/or the method of the invention lacks a step of depositing a hole transport layer.

The method of the invention may comprise the step of providing a conductive layer, for example a conductive transparent substrate comprising said conducting current collector layer 5. In some embodiments, the current collector comprises a material selected from indium doped tin oxide (ITO), fluorine doped tin oxide (FTO), ZnO—Ga2O3, ZnO—Al2O3, tin oxide, antimony doped tin oxide (ATO), SrGeO3 and zinc oxide, or combinations thereof.

權(quán)利要求

1
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