Shandong University

Longwei Yin

Bo Li

Yutong Wu

An organic-inorganic perovskite solar cell with directional arrangement of intrinsic perovskite dipoles is provided, and includes a conductive substrate, an electron transport layer, a perovskite film with directional arrangement of intrinsic dipoles, a hole transport layer and a metal counter electrode arranged from bottom to top; or the conductive substrate, the perovskite film with directional arrangement of intrinsic dipoles, the hole transport layer and the metal counter electrode arranged from bottom to top; a preparation method of the perovskite film includes: adding sulfonamide into perovskite precursor solution, and evenly mixing; spin coating on the electron transport layer or the conductive substrate and annealing. Volatile and high-polar molecule sulfonamide is used as an initiator for directional arrangement of intrinsic perovskite dipoles to induce reorientation of perovskite dipoles, thus achieving vertical directional polarization of the perovskite film, and effectively improve photoelectric conversion efficiency and stability of solar cells.

Organic-inorganic perovskite solar cell with directional arrangement of intrinsic perovskite dipoles and preparation method thereof

The disclosure provides an efficient and stable inorganic lead-free perovskite solar cell and a method for preparing the same. The solar cell includes a conductive substrate, a PEDOT: PSS layer, an inorganic lead-free CsSnIperovskite layer, a C60 layer, a BCP layer, and a metal counter electrode layer arranged in order from bottom to top, wherein the inorganic lead-free CsSnIperovskite layer is a CsSnIperovskite layer passivated by a thioureas small-molecule organic compound.

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Jinan, China

Longwei Yin