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A method for preparing perovskite thin films on textured heterojunction cells

A heterojunction battery, perovskite technology, applied in circuits, electrical components, photovoltaic power generation, etc., can solve the problems of high cost and slow speed

Active Publication Date: 2022-04-22
SHANGHAI JIAOTONG UNIV
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Problems solved by technology

The traditional process mainly includes the spin coating method, but it cannot achieve uniform and continuous coverage of the perovskite film on the heterojunction cell made of textured surface; the dual-source co-evaporation method requires a high vacuum and high temperature environment, and the cost is high, and slower rate

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  • A method for preparing perovskite thin films on textured heterojunction cells
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  • A method for preparing perovskite thin films on textured heterojunction cells

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Embodiment Construction

[0036] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0037] Such as figure 1 As shown, a preferred embodiment of the present invention realizes the uniform and continuous coverage of the perovskite thin film on the heterojunction battery with surface texture by electrochemical method:

[0038] Step 1. Cleaning of heterojunction cells with textured surface:

[0039] Step 1.1. Place the textured heterojunction cell in an ultrasonic cleaning machine, and clean it with deionized water, acetone, isopropanol, and ethanol for 15 minutes;

[0040] Step 1.2, finally placed under ultraviolet radiation to remove organic pollution and improve hydrophilicity;

[...

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Abstract

The invention discloses a method for preparing a perovskite thin film quickly and at low cost on an amorphous silicon / crystalline silicon heterojunction cell made of texture on the surface, and relates to the field of perovskite solar cells. cleaning the heterojunction battery; then electrochemically preparing a metal lead layer on the surface of the cleaned heterojunction battery with textured surface; finally using an electrochemical method to remove the The metallic lead layer is transformed into the perovskite film. Through the implementation of the invention, uniform perovskite thin films can be prepared quickly and at low cost on the textured heterojunction cells.

Description

technical field [0001] The invention relates to the field of perovskite solar cells, in particular to a method for preparing a perovskite thin film on a textured heterojunction cell. Background technique [0002] Crystalline silicon solar cells occupy more than 90% of the market share in the photovoltaic market, but it is extremely difficult to further improve due to the limitation of the efficiency limit of single-junction cells. Perovskite materials have become one of the most promising batteries for industrialization due to their high absorption coefficient, steep absorption edge, and adjustable band gap. The perovskite / crystalline silicon two-terminal tandem solar cell that combines the complementary advantages of the two spectra has gradually become a research hotspot, and it is likely to become a new generation of solar cells that break through the efficiency limit of crystalline silicon cells. The focus of this is how to realize the rapid and low-cost preparation of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01L31/0747H01L31/0236H01L31/0216H01L31/18
CPCH01L31/0747H01L31/02363H01L31/02167H01L31/1804Y02E10/547Y02P70/50
Inventor 沈文忠王杨润乾王鑫刘洪
Owner SHANGHAI JIAOTONG UNIV
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