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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

In a preferred embodiment, the invention concerns solar cells obtained by the methods of the invention. In some embodiments, such solar cells have the following layers and/or materials: A conductive, preferably transparent substrate layer, a dense n-type semiconductor layer, a mesoporous n-type semiconductor layer, a mesoporous space layer, a porous counter electrode layer, and a perovskite, the perovskite extending at least inside said porous n-type semiconductor layer and preferably being in contact with said counter electrode layer.

In some embodiments, the invention concerns subassemblies of solar cells obtained by the methods of the invention. In some embodiments, such subassemblies have the following layers and/or materials: A mesoporous n-type semiconductor layer, a mesoporous space layer, a porous counter electrode layer, and a perovskite, the perovskite extending at least inside said porous n-type semiconductor layer and preferably being in contact with said counter electrode layer.

The present invention will now be illustrated by way of examples. These examples do not limit the scope of this invention, which is defined by the appended claims.

EXAMPLES Example 1: Solar Cells in Accordance with an Embodiment of the Invention 1. Preparation of Solar Cells for Deposition of Precursor Solution

Triple layer solar cells of the configuration TiO2/ZrO2/C, deposited on a conducing transparent substrate but yet lacking a perovskite light harvester were prepared as follows.

權(quán)利要求

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