Plane heterojunction perovskite solar cell capable of being processed through solutions and manufacturing method thereof

Abstract

The invention belongs to the technical field of perovskite solar cells, and particularly relates to a plane heterojunction perovskite solar cell capable of being processed through solutions and a manufacturing method of the solar cell. A cathode decoration layer in the plane heterojunction perovskite solar cell is made of metal acetylacetone chelate membrane materials. The metal acetylacetone chelate is introduced into the solar cell to selectively collect electrons so as to prevent a cavity, the metal acetylacetone chelate is in ohmic contact with an active layer, the open-circuit voltage of the cell reaches the optimal value, the current and fill factors are correspondingly improved, the optical separation effect is achieved, the internal photoelectric field is redistributed, and therefore light absorption is enhanced, and the excellent performance is achieved in polymer solar cells. The manufacturing method of the perovskite solar cell has the advantages of being simple in process, low in cost, good in experimental repeatability, suitable for large-scale industrial production and the like.

Description

technical field [0001] The invention belongs to the technical field of perovskite solar cells, in particular to a planar heterojunction perovskite solar cell capable of solution processing and a preparation method thereof. Background technique [0002] The perovskite solar cells that have emerged in recent years have attracted much attention due to their outstanding advantages such as high efficiency, low cost, light weight, simple manufacturing process, and large-area flexible devices. Based on the perovskite material CH 3 NH 3 PB 3 Due to its simple structure and high efficiency, solar cells have become the focus of research in recent years. In the past two years, the development of perovskite batteries has been very rapid, and it took less than four years to develop from an efficiency of less than 5% to an efficiency of 16%. Therefore, in the short term, this type of solar cell has become a research focus and hotspot in the field. In 2013, research on perovskite sola...

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Problems solved by technology

[0003] Perovskite solar cells specifically refer to the use of ABO 3 configured perovskite materials such as CH 3 NH 3 PB 3 Solar cells such as the light absorbing layer, whether TiO 2 As a framework, or dense TiO 2 The perovskite solar cell as an electron collection layer requires a complex manufacturing process and requires a temperature of 500°C, which limits the possibility of mass production on flexible substrates such as polymer materials through printing and other processes to a certain extent.

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