ABO3 perovskite-based thin film solar cell

Abstract

The invention provides a perovskite-based thin film solar cell. The solar cell comprises a transparent electrode layer, an electron transmission layer, a perovskite light absorption layer, a hole transmission layer and a metal electrode layer, wherein the perovskite light absorption layer is provided with a first surface and a second surface, the first surface and the second surface are provided with a plurality of convex-concave parts, and a cross section of each convex-concave part is an isosceles triangle with a top angle being 150 degrees. In the perovskite-based thin film solar cell, contact surfaces among the perovskite light absorption layer, the electron transmission layer and the hole transmission layer are of convex-concave structures, and thus, the light absorption area of the perovskite light absorption layer is expanded; since a surface of the light absorption layer is an isosceles triangle with an angle being an obtuse angle, more light rays can be reflected, so that sunlight absorption quantity is further improved, and the efficiency of power generation from light is effectively improved; and meanwhile, the transmission area of electrons and holes which are generatedby the light absorption layer is expanded, the transmission efficiency of the electrons and the holes which are generated by the light absorption layer is improved, so that the stability of a currentand a battery is improved.

Description

technical field [0001] The invention relates to the technical field of solar cells, in particular to a perovskite-based thin film solar cell. Background technique [0002] Solar photovoltaic power generation is an effective means to solve the increasingly serious energy and environmental problems. After decades of development, the types of batteries have evolved from traditional monocrystalline silicon batteries to various new types of solar cells, including inorganic semiconductor thin-film batteries, organic semiconductor thin-film batteries, dye-sensitized batteries, and perovskite thin-film batteries. Perovskite solar cells developed on the basis of dye-sensitized solar cells have achieved a surge in photoelectric conversion efficiency in just a few years, which has attracted widespread attention and interest from academia and industry at home and abroad. [0003] This new type of solar cell includes a transparent conductive substrate (a conductive layer is deposited on...

AI Technical Summary

Problems solved by technology

However, the perovskite light-absorbing layers of the perovskite solar cells of the above-mentioned patents all adopt a planar structure, which will undoubtedly limit a certain amount of light absorption, and the sunlight perpendicular to the light-absorbing layer is easily reflected back to the surrounding environment by 100%. As a result, part of the light is not used effectively

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