Bi- and tri- layer interfacial layers in perovskite material devices

摘要

Photovoltaic devices such as solar cells, hybrid solar cell-batteries, and other such devices may include an active layer disposed between two electrodes. The active layer may have perovskite material and other material such as mesoporous material, interfacial layers, thin-coat interfacial layers, and combinations thereof. The perovskite material may be photoactive. The perovskite material may be disposed between two or more other materials in the photovoltaic device. Inclusion of these materials in various arrangements within an active layer of a photovoltaic device may improve device performance. Other materials may be included to further improve device performance, such as, for example: additional perovskites, and additional interfacial layers.

主权项

1. A method comprising the steps of:
preparing a lead halide precursor ink, wherein preparing a lead halide precursor ink comprises the steps of:
introducing a lead halide into a vessel;introducing a first solvent into the vessel;contacting the lead halide with the first solvent to dissolve the lead halide; andintroducing an additive comprising an amino acid or an amino acid hydrohalide into the vessel; depositing the lead halide precursor ink onto a substrate; drying the lead halide precursor ink to form a thin film; and depositing a second solvent and a salt onto the thin film.