Flexible perovskite solar cell production technology

Abstract

The invention discloses a flexible perovskite solar cell production technology. The flexible perovskite solar cell production technology includes the steps of 1), etching; 2), producing a photo-anode; 3), performing film formation by printing to obtain a carbon counter electrode, namely, performing film formation on a flexible conductive substrate by using conductive carbon paste with the drying temperature below 150 DEG C according to a silk-screen printing method so as to obtain the carbon counter electrode of a solar cell, wherein one end of the carbon counter electrode contacts with an ITO (indium tin oxide) conductive layer, a gap is formed between the other end of the carbon counter electrode and the ITO conductive layer, and a grown ZnO nanowire is arranged in the gap; 4), adding perovskite. The flexible perovskite solar cell production technology has the advantages that the photo-anode of the cell is produced on the flexible conductive substrate through a low-temperature production technology; then, the carbon counter electrode of the cell is produced from the low-temperature conductive carbon paste with the organic solvent drying temperature below 150 DEG C, and a film is produced by means of silk-screen printing, so that production cost of the counter electrode of the cell is reduced greatly; the flexible perovskite solar cell production technology is rapid in drying and good in conductivity, and heating temperature does not exceed borne temperature limit of the flexible conductive substrate.

Description

technical field [0001] The invention belongs to the field of solar cells, and more specifically relates to a preparation process of a flexible perovskite solar cell. Background technique [0002] At present, perovskite has been applied to solar cells for the first time because of its excellent light absorption ability and electron transmission ability. After years of development, the photoelectric conversion efficiency of solar cells has increased from the initial 3.8% to 19%, which is a A photoelectric conversion material with great development potential. With the deepening of research, the efficiency of the battery is very likely to exceed the current relatively mature monocrystalline silicon solar cells. [0003] In the preparation process of perovskite cells, the photoanode is usually anatase TiO which has been annealed and crystallized at 500 °C. 2 porous structure. At the same time, the preparation of the counter electrode usually adopts the process of electron beam...

AI Technical Summary

Problems solved by technology

The high vacuum required for 500°C annealing and electron beam thermal evaporation, coupled with the consumption of precious metals, makes the cost of battery preparation high, which is not conducive to the large-area preparation of batteries, and brings difficulties to the industrialization of batteries.

During the preparation process, a high temperature of 400°C needs to be introduced to volatilize the organic solvent in the film, so it is not suitable for the preparation of flexible perovskite cells based on flexible conductive substrates

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