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Annealing method for photo-anode of perovskite solar cell

A solar cell and perovskite technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of defective polycrystalline interiors and inability to effectively control the morphology of perovskite crystals, and achieve the goal of promoting morphology and reducing defects Effect

Inactive Publication Date: 2016-03-16
HARBIN INST OF TECH
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Problems solved by technology

[0005] The present invention aims to solve the technical problems that the current annealing method for the anode of the perovskite solar cell cannot effectively control the morphology of the perovskite crystal, more defects and excessive residual reactants in the crystal, and provides a perovskite solar cell light Annealing method of anode

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  • Annealing method for photo-anode of perovskite solar cell
  • Annealing method for photo-anode of perovskite solar cell
  • Annealing method for photo-anode of perovskite solar cell

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specific Embodiment approach 1

[0018] Embodiment 1: This embodiment is an annealing method for the anode of a perovskite solar cell, which is specifically carried out in the following steps:

[0019] When the photoanode of the perovskite solar cell is heated and annealed on the heating table, the perovskite light absorber layer of the photoanode of the perovskite solar cell directly contacts the heating table, and is annealed at an annealing temperature of 30°C to 170°C Treat for 5 minutes to 30 minutes; the photoanode of the perovskite solar cell is sequentially composed of a conductive glass layer, an electron transport layer and a perovskite light absorbing agent layer from top to bottom.

specific Embodiment approach 2

[0020] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the conductive glass is FTO conductive glass. Others are the same as the first embodiment.

specific Embodiment approach 3

[0021] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the conductive glass is ITO conductive glass. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses an annealing method for a photo-anode of a perovskite solar cell, relates to the annealing method for the photo-anode of the perovskite solar cell, aims at solving the technical problems an existing annealing method for the photo-anode of the perovskite solar cell cannot well control the shape and form of a perovskite light absorbent, and is relatively multiple in defect states, excessive residues of reactants in crystal and the like. According to the annealing method, when the photo-anode of the perovskite solar cell is heated and annealed on a heating stage, a perovskite light absorbent layer of the photo-anode of the perovskite solar cell directly contacts the heating stage for annealing. The annealing method has the advantages that solvents and unreacted materials left in the crystal and on the surface can be effectively utilized in the annealing process of the perovskite light absorbent; and improvement of the shape and form of the perovskite crystal is promoted, so that partial residual reactants further react completely in the annealing process; the damage to the crystal caused by excessive solvents in a solvent-assisted annealing method is avoided; and the annealing method is applied to preparation of the perovskite solar cell.

Description

technical field [0001] The invention relates to an annealing method for a photoanode of a solar battery. Background technique [0002] After several years of rapid development, although perovskite solar cells have achieved an efficiency of more than 20%, there is still a big gap from its theoretical efficiency of 50%. The instability in the air also restricts the practical application of perovskite solar cells. one of the bottlenecks. The reasons that limit the improvement of battery efficiency are the interface charge recombination between perovskite and other transport layers, the lack of more efficient carrier transport materials, the influence of humidity in the air, ultraviolet light, etc., and the defects of the light absorber material itself also affect the perovskite. One of the main factors of battery efficiency, people have tried various methods to improve the morphology of perovskite, and achieved very effective results. [0003] The annealing of perovskite is o...

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Application Information

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IPC IPC(8): H01L51/48
CPCH10K71/40Y02E10/549
Inventor 杨玉林董国华盛利叶腾林范瑞清昌晴苏婷
Owner HARBIN INST OF TECH
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