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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(lèi)
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(shū)

The perovskite precursor ink for this experiment was prepared by mixing 0.53 g of PbI2 (TCI Chemicals), 0.19 g of methyl ammonium iodide (MAI, Dyesol) and 0.0176 g of 5-ammonium valeric acid iodide (5-AVAI, Dyesol) in 1 ml of gamma-butyrolactone (Sigma Aldrich) in a glass vial under a laboratory fume hood. The glass vial was sealed and placed for stirring for 30 min on a preheated (at 70° C.) hot-plate. The ingredients were completely dissolved and a clear yellow solution was obtained that was allowed to cool down to room temperature. The ink was then transferred to the inkjet printer cartridge. The perovskite precursor ink remained stable both in glass vial and in the printer cartridge for more than 2 weeks and no precipitation or precipitation of the solutes was observed. Table 1 below shows the characteristics of the perovskite precursor ink.

TABLE 1 Characteristics of the perovskite precursor ink used in this study: ρ = ink density, γ = surface tension of the ink, BP = boiling point of the solvent, and their optimal values specified by the inkjet printer manufacturer. Characteristic Perovskite precursor ink value Optimal value

權(quán)利要求

1
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