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Method for preparing perovskite thin film on surface textured heterojunction battery

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

Active Publication Date: 2020-12-29
SHANGHAI JIAO TONG UNIV
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  • Claims
  • Application Information

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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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  • Method for preparing perovskite thin film on surface textured heterojunction battery

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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 rapidly preparing a perovskite thin film on an amorphous silicon / crystalline silicon heterojunction battery with a textured surface at low cost, and relates to thefield of perovskite solar cells, and the method comprises the following steps: firstly, cleaning the heterojunction battery with the textured surface; then preparing a metal lead layer on the surfaceof the cleaned heterojunction battery with the textured surface by adopting an electrochemical method; and finally, converting the metal lead layer contained on the heterojunction battery with the textured surface into the perovskite thin film by adopting an electrochemical method. Through the implementation of the method, the uniform perovskite thin film can be rapidly prepared on the heterojunction battery with the textured surface at low cost.

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 Applications(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 JIAO TONG UNIV
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