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Preparation method for high-efficiency and large-area perovskite solar cell

A solar cell and perovskite technology, applied in circuits, electrical components, electrical solid devices, etc., can solve the problem of affecting the quality and photoelectric conversion efficiency of perovskite solar cells, unstable decomposition of perovskite materials, and difficulty in ensuring film formation Uniformity and other issues, to overcome uneven film thickness, improve quality and performance, and ensure stability

Inactive Publication Date: 2017-07-14
WUHAN UNIV OF TECH
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  • Summary
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  • Claims
  • Application Information

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Problems solved by technology

However, due to the cumbersome preparation process and immature process of perovskite solar devices at present, the spin-coating method used in the traditional production of large-area perovskite solar cells has poor film quality, and it is difficult to ensure the uniformity of film formation. Perovskite materials are very sensitive to water and oxygen, and the decomposition of perovskite materials is unstable, which affects the quality and photoelectric conversion efficiency of large-area perovskite solar cells.

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  • Preparation method for high-efficiency and large-area perovskite solar cell

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preparation example Construction

[0027] Perovskite solar cell structures such as figure 1 shown. A method for preparing a high-efficiency large-area perovskite solar cell, specifically comprising the following steps:

[0028] Step 1. Treat the substrate: use ITO glass as the substrate material (the average light transmittance of ITO glass is about 83%), cut it into a suitable size and clean it; when cleaning, use detergent solution, deionized water and ethanol to clean it ultrasonically in sequence 15 to 20 minutes each, blown dry with nitrogen flow, and then irradiated with ultraviolet light for 9 to 11 minutes. The substrate includes a transparent substrate 1 and a conductive layer 2 covering the surface of the transparent substrate 1;

[0029] Step 2: Prepare the hole transport layer 3; laser scribe lines on the processed substrate, and then vapor-deposit copper phthalocyanine (CuPC) on the scribed substrate to form the hole transport layer 3 . The specific process is, in the vacuum chamber, by heating ...

Embodiment 1

[0035] Embodiment 1, this embodiment provides a high-efficiency large-area perovskite solar cell, which includes a transparent substrate 1, a conductive layer 2, a hole transport layer 3, a perovskite active layer 4, an electronic The transmission layer 5 and the metal counter electrode 6, wherein the transparent substrate 1 and the conductive layer 2 are integrated, are collectively referred to as a substrate, and the size of the substrate is 10×10 cm; the manufacturing process of the battery is as follows:

[0036] 1. Treat the substrate: use ITO glass as the substrate material, cut it into a size of 10×10cm, then use detergent solution, deionized water and ethanol to ultrasonically clean it for 15 minutes each, blow it dry with nitrogen flow, and then irradiate it with ultraviolet light for 10 minutes;

[0037] 2. Preparation of the hole transport layer 3; 13 laser lines were carved on the treated substrate with a line spacing of 6 mm; then copper phthalocyanine (CuPC) was v...

Embodiment 2

[0043] Embodiment 2. This embodiment provides a high-efficiency large-area perovskite solar cell, which includes a transparent substrate 1, a conductive layer 2, a hole transport layer 3, a perovskite active layer 4, and an electronic The transmission layer 5 and the metal counter electrode 6, wherein the transparent substrate 1 and the conductive layer 2 are integrated, are collectively referred to as a substrate, and the size of the substrate is 10×10 cm; the manufacturing process of the battery is as follows:

[0044] 1. Treat the substrate: use ITO glass as the substrate material, cut it into a size of 10×10cm, then use detergent solution, deionized water and ethanol to ultrasonically clean it for 15 minutes each, blow it dry with nitrogen flow, and then irradiate it with ultraviolet light for 10 minutes;

[0045] 2. Preparation of the hole transport layer 3; 13 laser lines were carved on the treated substrate with a line spacing of 6 mm; then copper phthalocyanine (CuPC) w...

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Abstract

The invention discloses a preparation method for a high-efficiency and large-area perovskite solar cell. The preparation method comprises the following steps of processing a substrate; preparing a hole transfer layer; preparing a perovskite active layer: performing thermal evaporation of a layer of methylamine iodate on the hole transfer layer of the substrate, then performing evaporation of a layer of lead iodide on the methylamine iodate and carrying out heating treatment to enable the methylamine salt and lead iodide to react to generate the perovskite active layer; preparing an electron transfer layer; preparing a metal counter electrode; and packaging the perovskite solar cell. The preparation method has the beneficial effects as follows: the key assembly which refers o the perovskite active layer of the perovskite solar cell is prepared by a two-step evaporation method, so that the problem of uneven thickness in large-area film formation existing in the conventional spin coating method can be overcome, the stability of the perovskite active layer is ensured, and the quality and the performance of the large-area perovskite solar cell are improved.

Description

technical field [0001] The invention relates to a solar cell preparation process, in particular to a method for preparing a high-efficiency large-area perovskite solar cell. Background technique [0002] In recent years, the research on cheap, high-efficiency and large-area new solar cells has progressed rapidly. The photoelectric conversion efficiency of perovskite solar cells has also increased from 3.8% in 2009 to the current 22%. Perovskite solar cells are famous for their optical properties. Excellent, simple process preparation, low cost and other advantages are widely used in various industries. [0003] At present, the existing small-area perovskite solar cells (about 1cm 2 ) has a photoelectric conversion efficiency of more than 22%, which has exceeded the photoelectric conversion efficiency (about 16%) of commercialized monocrystalline silicon solar cells on the market, which can meet the basic requirements of commercial production. However, due to the cumbersome...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/48
CPCH10K71/00H10K30/10H10K30/00H10K30/80Y02E10/549
Inventor 彭勇李昆鹏王继泽
Owner WUHAN UNIV OF TECH
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