Water-resistant perovskite photovoltaic material and preparation method therefor

A technology of perovskite materials and photovoltaic materials, applied in photovoltaic power generation, final product manufacturing, climate sustainability, etc., can solve problems such as affecting the life and stability of devices, increasing the difficulty and cost of device packaging, and decreasing battery performance. , to achieve the effect of enhancing waterproofness and stability, improving photoelectric conversion efficiency, and avoiding battery failure

Active Publication Date: 2016-04-13
深圳市德朗能电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The disadvantages of the existing technology are: the chemical stability of the perovskite photovoltaic material itself is very poor, and it is easily decomposed by water in the air to cause battery failure, and is sensitive to oxygen in the air, resulting in a decrease in battery performance, which in turn affects the performance of the device. Life and stability lead to increased difficulty and cost of device packaging, which is the main obstacle to the practical application of perovskite photovoltaic materials

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] (1) Preparation of TiO 2 dense layer

[0031] Screen printing a layer of TiO on FTO glass 2 Thin film layer, after heating at 450°C for 30 minutes, a dense layer with a thickness of 50nm is obtained;

[0032] (2) Preparation of TiO 2 Mesoporous layer

[0033] Nano TiO 2 Make a slurry with ethanol at a weight ratio of 1:3, spin-coat onto the dense layer obtained in step (1), dry at 110°C, and then transfer to a muffle furnace for annealing at a temperature of 450°C for 50 minutes to obtain Nano-TiO attached to the dense layer 2 mesoporous layer;

[0034] (3) Preparation of perovskite photovoltaic materials

[0035] Spin-coat the nano-mica mesoporous layer obtained in step (3) with a concentration of 0.8mol / L lead iodide, lead chloride or lead bromide solution, and then 3 NH 3 After soaking in isopropanol for 15min, wash with isopropanol, and then heat at 90°C for 30min to generate CH 3 NH 3 PB 3 、CH 3 NH 3 PbCl 2 I or CH 3 NH 3 PbBr 2 I perovskite struc...

Embodiment 2

[0040] Step (1) is the same as above;

[0041] (2) Preparation of TiO 2 Mesoporous layer

[0042] Nano TiO 2 Make a slurry with ethanol at a weight ratio of 1:2, spin coat the dense layer obtained in step (1), dry at 100°C, and then transfer to a muffle furnace for annealing treatment at a temperature of 300°C for 30 to obtain Nano-TiO attached to the dense layer 2 mesoporous layer;

[0043] (3) Preparation of perovskite photovoltaic materials

[0044] Nano-TiO obtained in step (2) 2 The mesoporous layer is spin-coated with a concentration of 0.8mol / L lead iodide, lead chloride or lead bromide solution, and then in a concentration of 8mg / mlCH 3 NH 3 After soaking in isopropanol for 15 minutes, wash with isopropanol, and then heat at 90°C for 50 minutes to generate CH 3 NH 3 PB 3 、CH 3 NH 3 PbCl 2 I or CH 3 NH 3 PbBr 2 I perovskite structure material: then get nano-TiO with a thickness of 500nm 2 Perovskite photovoltaic materials;

[0045] (4) Preparation of wat...

Embodiment 3

[0049] Step (1) is the same as above;

[0050] (2) Preparation of TiO 2 Mesoporous layer

[0051] Nano TiO 2 Make a slurry with ethanol at a weight ratio of 1:5, spin coat the dense layer obtained in step (1), dry at 200°C, and then transfer to a muffle furnace for annealing at 600°C for 60 minutes to obtain Nano-TiO attached to the dense layer 2 mesoporous layer;

[0052] (3) Preparation of perovskite photovoltaic materials

[0053] Nano-TiO obtained in step (2) 2 The mesoporous layer is spin-coated with a concentration of 1.0mol / L lead iodide, lead chloride or lead bromide solution, and then in a concentration of 12mg / mlCH 3 NH 3 After soaking in isopropanol for 20min, wash with isopropanol, and then heat at 90°C for 50min to generate CH 3 NH 3 PB 3 、CH 3 NH 3 PbCl 2 I or CH 3 NH 3 PbBr 2 I perovskite structure material: then get nano-TiO with a thickness of 550nm 2 Perovskite photovoltaic materials;

[0054] (4) Preparation of water-resistant perovskite ph...

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Abstract

The invention provides a water-resistant perovskite photovoltaic material used for a solar cell and used as a light-absorbing layer of the solar cell. The surface of the perovskite material is coated with a nanometer stannic oxide thin film, so that the perovskite material can be effectively prevented from being degraded by moisture in the air to result in battery failure, and the water repellency and the stability of the perovskite material are improved; meanwhile, the light-absorbing property of the perovskite material can be reinforced by the nanometer stannic oxide thin film, and the photoelectric conversion efficiency can be improved; and when the water-resistant perovskite photovoltaic material provided by the invention is used for assembling a solar cell, the photoelectric conversion efficiency of the solar cell can reach 12.8%.

Description

technical field [0001] The invention relates to the technical field of photovoltaic materials, in particular to a water-resistant perovskite photovoltaic material and a preparation method thereof. Background technique [0002] The consumption of traditional fossil fuels has had a huge impact on the environment, which has gradually increased the demand for clean energy. Solar energy has great application value as a clean energy source. Therefore, a solar photovoltaic material with high photoelectric conversion efficiency, stable performance and long service life has been developed. has great significance. Traditional inorganic semiconductor solar cells have problems such as high cost and high pollution, and finding new types of solar cells is still a research hotspot. [0003] Perovskite-type organometallic halide materials have excellent photoelectric properties and are easy to synthesize, and have been widely used in solar cell research. At present, the highest energy conv...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48
CPCH10K30/80H10K30/00H10K30/88Y02E10/549Y02P70/50
Inventor 陈庆曾军堂叶任海陈兵
Owner 深圳市德朗能电子科技有限公司
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