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Method for inkjet printing an organic-inorganic perovskite

專利號(hào)
US11177440B2
公開(kāi)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

However, one key characteristic of 5-AVAI and related compounds as specified in this specification was not highlighted before this report: it significantly slows down the perovskite precipitation before and after the deposition of the precursor ink thus preventing the inkjet printer cartridge from clogging and provides an opportunity for precise patterning and controlled volume dispensing of precursor ink.

The capabilities of the precursor ink printed or infiltrated through inkjet printer are depicted in FIGS. 2 A-C where high quality precise patterning of logos of all the collaborators of this work, along with the printing of the QR-code and bitmap version of a digital image was performed over commonly available Xerox paper (FIG. 2 C). These demonstrations have been attributed due to precise dispensing of known volumes of the perovskite precursor ink which were also used to tune the photovoltaic performance of carbon based PSCs in this experiment while keeping the thickness of separator layer (here ZrO2) constant (FIGS. 2A and 2B).

權(quán)利要求

1
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