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Perovskite film photovoltaic cell based on SnO2 and preparation method thereof

A thin-film photovoltaic cell and perovskite technology, applied in photovoltaic power generation, circuits, electrical components, etc., can solve problems such as long-term stability, instability, and unsuitable industrial applications, and achieve good photoelectric conversion efficiency and stable performance. , reduce production costs, the effect of large-scale industrial application prospects

Active Publication Date: 2014-11-19
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

ZnO is an amphoteric oxide, which is soluble in both acid and alkali. It is relatively unstable in the natural environment, so although it has achieved good efficiency, there are still problems in long-term stability, and it is not very suitable for industrial applications. Be applicable
Today, the photoelectric conversion efficiency of perovskite solar cells has reached the requirements of industrialization, but there are still many problems to be solved in terms of preparation process, cost and stability.

Method used

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  • Perovskite film photovoltaic cell based on SnO2 and preparation method thereof
  • Perovskite film photovoltaic cell based on SnO2 and preparation method thereof
  • Perovskite film photovoltaic cell based on SnO2 and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0044] 1) Wash. In the test, the FTO conductive glass substrate should be cleaned and dried first. First, cut the conductive glass to the required size with a glass knife, clean it with a detergent, and then rinse it with deionized water. Then place it in an ultrasonic cleaner to clean it with acetone, ethanol, and ionized water in sequence, and finally dry it with nitrogen to obtain a substrate with a clean surface required for the experiment.

[0045] 2) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. Configuration of perovskite solution: 1 mol / L of PbCl 2 Dissolve in dimethylformamide and stir at 60°C for 24 hours. PbCl 2 The solution was directly spin-coated on a clean conductive substrate through a glue spinner, and then annealed at 70 degrees Celsius for half an hour. PbCl 2 The sample was placed in 10 mg / L CH 3 NH 3 Soak in isopropanol solution for five minutes; finally rinse the sample with isopropanol, blow dry with nitrogen, and anneal at 70 degrees...

Embodiment 2

[0050] 1) Wash. With embodiment 1.

[0051] 2) TiO 2 Electron transport layer preparation. Take 70 mL of absolute ethanol, then add 1.9 mL of diethanolamine to it, heat at 40 °C and keep stirring for 30 minutes, then add 9 mL of butyl titanate and keep stirring at 40 °C for 40 minutes, then add 20 mL of anhydrous Ethanol, keep stirring at 40°C for 40 minutes. Stand still for 24 hours to obtain colorless, transparent and clear TiO 2 dense layer solution. The dense layer solution was evenly spin-coated on a clean FTO conductive glass substrate through a glue spinner, and finally sintered at 550 degrees Celsius for 30 minutes.

[0052] 3) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. Configuration of perovskite solution: 1 mol / L of PbCl 2 Dissolve in dimethylformamide and stir at 60°C for 24 hours. PbCl 2 The solution was uniformly and directly spin-coated on the dense TiO 2 On thin film; handle with PbCl 2 The sample was placed in 10 mg / L CH 3 NH 3 Soak ...

Embodiment 3

[0057] 1) Wash. With embodiment 1.

[0058] 2) SnO 2 Electron transport layer preparation. 0.025 mol / L of SnCl 2 2H 2 O ethanol solution was stirred for 30 minutes, and then the precursor solution was evenly spin-coated on the cleaned ITO conductive substrate with a glue spinner; the electron transport layer was annealed at 400 degrees Celsius for 30 minutes;

[0059] 3) Perovskite CH 3 NH 3 PB 3 Absorbing layer preparation. Configuration of perovskite solution: 1 mol / L of PbCl 2 Dissolve in dimethylformamide and stir at 60°C for 24 hours. PbCl 2 The solution was evenly spin-coated on the dense SnO 2 On thin film; handle with PbCl 2 The sample was placed in 10 mg / L CH 3 NH 3 Soak in isopropanol solution for five minutes; finally rinse the sample with isopropanol, blow dry with nitrogen, and anneal at 70 degrees Celsius for thirty minutes.

[0060] 4) Preparation of hole transport layer. With embodiment 1.

[0061] 5) Electrode preparation. With embodiment 1. ...

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Abstract

The invention relates to a perovskite film photovoltaic cell based on SnO2 and a preparation method thereof. The perovskite film photovoltaic cell utilizes a SnO2 film, which can be prepared in low temperature, as an electron transmission layer to replace a conventional TiO2 electron transmission layer prepared through high-temperature sintering. The perovskite film photovoltaic cell based on the SnO2 electron transmission layer prepared at low temperature realizes 14.60% high photoelectric conversion efficiency, so that the perovskite film photovoltaic cell based on the SnO2 is far better than the conventional perovskite film photovoltaic cell based on the TiO2 electron transmission layer prepared through high-temperature sintering. The chemical property of the SnO2 film is stable and the preparation process is simple; the preparation process of the perovskite cell is greatly simplified, the fabricating cost of the cell is effectively reduced, and the stability of the perovskite film photovoltaic cell performance can also be improved very well.

Description

technical field [0001] The invention relates to a perovskite thin-film photovoltaic cell and a preparation method thereof, belonging to the field of optoelectronic materials and devices. Background technique [0002] In recent years, the energy crisis has become more and more urgent, and the research on clean energy has become more and more urgent. Clean energy includes solar energy, wind energy, hydroelectric energy, etc. Solar energy is inexhaustible, and photovoltaic cells can directly convert solar energy into electrical energy and have great application prospects. The current solar cells have developed from silicon solar cells to more mature organic solar cells, dye-sensitized solar cells and copper indium gallium tin solar cells. However, there are still many problems in the application of these batteries such as high cost and poor stability. Therefore, the development and utilization of solar energy are still in their infancy, and the research on solar cells is also...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/46H01L51/48
CPCH10K71/12H10K30/15H10K30/151H10K85/50H10K30/50Y02E10/549Y02P70/50H10K30/82H10K85/00
Inventor 方国家柯维俊刘琴陶洪雷红伟王静
Owner WUHAN UNIV
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