Structure of flexible substrate of flexible full perovskite laminated solar cell and preparation method of structure

Abstract

The invention discloses a structure of a flexible substrate of a flexible full perovskite laminated solar cell. The structure comprises an upper substrate packaging layer, a lower substrate packaginglayer, an electron transport layer, a polymer flexible layer and a photoelectric absorption layer, wherein the photoelectric absorption layer is arranged at the upper part of the lower substrate packaging layer, the electron transport layer is arranged at the lower part of the upper substrate packaging layer, the polymer flexible layer is arranged between the electron transport layer and the photoelectric absorption layer, bumps and grooves which are non-uniformly distributed are formed in the polymer transport layer, and the electron transport layer consists of ultrathin tin oxide SnO2 and thin film crystal grains. According to the invention, the area of the conductive thin film layer covering the top surface of the substrate body is increased, the effective absorption area of the conductive thin film layer for solar energy is further increased, and the solar energy conversion rate of the solar thin film cell is improved. Meanwhile, a multi-physical field coupling technology is utilized to cooperatively regulate and control the photoelectric property of the laminated thin film solar cell, so that the photoelectric property of the solar cell is optimized.

Description

technical field [0001] The invention belongs to the technical field of new energy batteries, and in particular relates to a structure and a preparation method of a flexible substrate of a flexible all-perovskite laminated solar cell. Background technique [0002] Thin-film battery, as the name implies, is to prepare a thin film into a solar cell. It uses very little silicon, which makes it easier to reduce costs. At the same time, it is not only a high-efficiency energy product, but also a new type of building material, which is easier to perfectly integrate with buildings. Under the background of continuous shortage of silicon raw materials in the international market, thin-film solar cells have become a new trend and new hotspot in the development of the international photovoltaic market. There are three main types of thin-film batteries that can be industrialized and mass-produced: silicon-based thin-film solar cells, copper indium gallium selenide thin-film solar cells (...

AI Technical Summary

Problems solved by technology

[0006] However, the conversion rate of existing thin-film solar cells is low. At present, the conversion rate of solar energy is mainly increased by adding angle tracking devices, changing the structure of each film layer, and adding light-gathering devices; among them, adding additional equipment will inevitably increase The cost of the solar system, changing the structure of the film layer requires the cooperation of related processes, which is difficult

Images