Abstract: A process for producing a layer of organic-inorganic hybrid perovskite material including the following steps: a) Forming of a layer comprising the inorganic precursors of perovskite material on a substrate by CSS or CSVTD, b) Implementation of a CSS or CSVTD step from organic precursors the organic precursors with the layer of inorganic precursors and a layer of organic-inorganic hybrid perovskite material is obtained.

Abstract: A process for producing an organic-inorganic perovskite layer including the following steps: Forming of a layer of inorganic precursors on a substrate, Implementation of a step of close space sublimation from a powder including the organic precursors, whereby the vapors from the layer of organic precursors react with the layer of inorganic precursors and a hybrid organic-inorganic perovskite layer is formed, the powder of organic precursors being obtained by mechanosynthesis by co-grinding at least a first group of particles of a first material and a second group of particles of a second material to form a third group of particles of a third material, the third group of particles forming the powder of organic precursors.

Abstract: A method of forming a layer from ink on a substrate, includes the steps of: depositing an ink volume with a slot-die coating device; first drying; and second drying.