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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.

說明書

In an aspect, the present invention provides the use of a cation of formula (I) for reducing and/or slowing down one or more selected from the nucleation, crystal growth and/or precipitation in a perovskite precursor solution.

In an aspect, the present invention provides the use of a cation of formula (I) for increasing the stability of a perovskite precursor solution and/or rendering such solution amenable to printing, for example inkjet printing.

In an aspect, the present invention provides an ink suitable for depositing a perovskite by printing, said ink comprising a cation of formula (I).

Further aspects and preferred embodiments of the invention are defined herein below and in the appended claims. Further features and advantages of the invention will become apparent to the skilled person from the description of the preferred embodiments given below.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is an illustration of the scalable process to be employed for the production of HTM free carbon based perovskite solar cells in accordance with an embodiment of the invention. a) FTO coated glass b) laser patterning of the FTO layer c) spray pyrolysis of compact TiO2 layer d) screen printing of silver contacts e) screen-printing of a mesoporous TiO2 layer f) screen-printing of an insulating ZrO2 layer g) screen-printing of a porous carbon composite layer h) inkjet of a controlled volume of perovskite precursor solution, which is targeted in this work. Note: Only scalable processes are highlighted here. The sintering steps consecutive to screen-printing are not represented for better clarity.

權(quán)利要求

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