Perovskite-based thin film solar cell and preparation method thereof

A solar cell and perovskite technology, applied in the field of solar cells, can solve problems such as device instability and restricting the large-scale application of perovskite-based thin-film solar cells.

Active Publication Date: 2019-02-05
HUBEI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under ultraviolet light, the oxygen molecule desorption on the surface of the titanium dioxide transport layer prepared by the current traditional technology will cause device instability, which will seriously restrict the large-scale application of perovskite-based thin film solar cells. The contact method of titanium dioxide and perovskite is particularly important for the development of perovskite-based thin film solar cells

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  • Perovskite-based thin film solar cell and preparation method thereof
  • Perovskite-based thin film solar cell and preparation method thereof

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preparation example Construction

[0027] The embodiment of the present invention also provides a method for preparing the above-mentioned perovskite-based thin film solar cell, which includes:

[0028] S1. Deposition of TiO on the surface of conductive substrate by magnetron sputtering technique 2 Dense film, TiO after annealing 2 electron transport layer.

[0029] Conductive substrates can be cleaned prior to magnetron sputtering. The cleaning methods include: ultrasonic cleaning and drying with detergent, deionized water, ethanol, acetone, and isopropanol, and ultraviolet and ozone treatment to improve the base work function. Cleaning the conductive substrate can improve the effect of magnetron sputtering and obtain denser and stronger adhesion TiO 2 film.

[0030] Further, the temperature of the magnetron sputtering is room temperature, the sputtering power is 80-150W, the pressure is 0.4-1Pa, and the distance between the target and the conductive substrate is 10-20cm. Specifically, the cleaned conduct...

Embodiment 1

[0047] This embodiment provides a perovskite-based thin film solar cell, the preparation method of which comprises:

[0048] S1. Preparation of TiO 2 electron transport layer

[0049] S1-1. Ultrasonic cleaning and drying of the FTO glass with acetone, detergent, deionized water, ethanol, and isopropanol, and after ultraviolet and ozone treatment, put it into the magnetron sputtering chamber and close the hatch;

[0050] S1-2. Use a mechanical pump and a vacuum molecular pump to pump the sputtering chamber to 7×10 -4 Pa, through the argon control pressure is 0.8Pa. Set the sputtering power to 120W, and the rotational speed of the sample stage to 6rpm. Start the DC power supply to ignite, and pre-sputter for 5 minutes to remove pollutants;

[0051] S1-3. Open the sample plate and start sputtering, 100nm TiO can be obtained by sputtering for 30 minutes 2 dense layer thin film, the resulting TiO 2 Dense and thin annealed at 400°C for 30min to obtain TiO 2 electron transport...

Embodiment 2

[0064] This embodiment provides a perovskite-based thin film solar cell, the preparation method of which comprises:

[0065] S1. Preparation of TiO 2 electron transport layer

[0066] S1-1. Ultrasonic cleaning and drying of the ITO glass with acetone, detergent, deionized water, ethanol, and isopropanol, and after ultraviolet and ozone treatment, put it into the magnetron sputtering chamber and close the hatch;

[0067] S1-2. Use a mechanical pump and a vacuum molecular pump to pump the sputtering chamber to 8×10 -4 Pa, through the argon control pressure to 1Pa. Set the sputtering power to 100W, and the rotational speed of the sample stage to 6rpm. Start the DC power supply to ignite, and pre-sputter for 10 minutes to remove pollutants;

[0068] S1-3. Open the sample plate and start sputtering, 130nm TiO can be obtained by sputtering for 40 minutes 2 dense layer thin film, the resulting TiO 2 Dense and thin annealed at 500°C for 30min to obtain TiO 2 electron transport ...

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Abstract

The invention discloses a perovskite-based thin film solar cell, and relates to the field of solar cells. A composite modification layer includes a modification bottom layer made of Y2O3, ZnO or zinctin oxide, and a modification upper layer made of Al2O3. The modification bottom layer reduces the density of defect state of a TiO2 electron transport layer, so that the efficiency of the cell can beenhanced; and the modification upper layer has rich methyl, so that the enhancement of the quality of a perovskite thin film can be realized, and the photoelectric performance of devices can be increased. Through the arrangement of the composite modification layer, the contact of titanium dioxide and perovskite can be effectively obstructed, so that damages of the titanium dioxide to perovskite materials under lighting conditions can be reduced, the stability of the cell can be enhanced, and the service life of the cell can be prolonged. A preparation method of the cell is also disclosed. Thepreparation method is simple and convenient in operation and low in equipment requirement, and can produce the cell with high efficiency and high quality.

Description

technical field [0001] The invention relates to the field of solar cells, in particular to a perovskite-based thin-film solar cell and a preparation method thereof. Background technique [0002] In recent years, with the increasing depletion of fossil energy and the increasingly serious problems of greenhouse effect and environmental pollution, the effective and reasonable use of solar energy has become one of the important ways to solve these problems. In order to solve the increasingly severe energy and environmental problems, people have turned their attention to the development and utilization of new energy. Among various new energy technologies, photovoltaic power generation is undoubtedly one of the most promising directions. Although traditional silicon-based solar cells have achieved industrialization and have a relatively mature market, their cost performance cannot compete with traditional energy sources, and the pollution and energy consumption problems in the ma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K30/151H10K2102/00H10K2102/101H10K2102/102Y02E10/549
Inventor 董兵海覃奎王世敏赵丽万丽王二静李静许祖勋李文路
Owner HUBEI UNIV
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