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Method for preparing crystal homogeneous type perovskite thin film

A perovskite and thin film technology, which is applied in the field of preparation of crystal uniform perovskite thin films, can solve the problems of poor photoelectric transmission efficiency, uneven perovskite crystal size, poor perovskite film coverage, etc., to achieve Effects of inhibiting interfacial recombination, enhancing light absorption ability, and improving charge transport ability

Inactive Publication Date: 2017-11-17
常州市瑞泰物资有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is to solve the problem that the perovskite crystal size is not uniform in the preparation process of the existing perovskite film, which makes the coverage of the perovskite film on the substrate poor, resulting in poor photoelectric transmission efficiency. Preparation method of crystal uniform perovskite thin film

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0017] First, weigh 10g of titanium dioxide particles, place them in a ball mill jar and mill them for 3 hours, pass through a 200-mesh sieve to obtain titanium dioxide powder, mix titanium dioxide powder with acetonitrile at a mass ratio of 1:100, and place it under 250W for ultrasonic dispersion for 10 minutes to prepare a mixed Dispersion liquid: Weigh 100mL of mixed dispersion liquid and 10g of polyethylene oxide with a molecular weight of 4,000,000 and place them in a 1,000mL three-necked flask, heat in a water bath at 75°C for 4h, and then add 10g of polyethylene oxide with a molecular weight of 534,000 to the three-necked flask after the water bath heating is completed. Polyvinylidene fluoride, insulated and stirred for 10 hours, filtered the filtrate while it was hot, and placed the filtrate at 45°C in rotary evaporation to 1 / 8 of the volume of the filtrate to prepare a modified concentrated solution; weigh 5g N719 ruthenium dye, 150mL tert-butyl Alcohol and 180mL of ac...

example 2

[0020]First, weigh 13g of titanium dioxide particles, place them in a ball mill jar and mill them for 4 hours, pass through a 200-mesh sieve to obtain titanium dioxide powder, mix titanium dioxide powder with acetonitrile at a mass ratio of 1:100, and place it under 280W for ultrasonic dispersion for 13 minutes to prepare a mixed Dispersion: Weigh 103mL of mixed dispersion and 15g of polyethylene oxide with a molecular weight of 4,000,000 and place them in a 1,000mL three-necked flask, heat in a water bath at 80°C for 5h, and then add 15g of polyethylene oxide with a molecular weight of 534,000 to the three-necked flask after the water bath heating is completed. Polyvinylidene fluoride, insulated and stirred for 11 hours, filtered the filtrate while it was hot, and placed the filtrate at 48°C to rotary evaporate to 1 / 8 of the volume of the filtrate to prepare a modified concentrated solution; weigh 6g of N719 ruthenium dye, 180mL of tert-butyl Alcohol and 200mL of acetonitrile ...

example 3

[0023] First, weigh 15g of titanium dioxide particles, place them in a ball mill jar and mill them for 5 hours, pass through a 200-mesh sieve to obtain titanium dioxide powder, mix titanium dioxide powder with acetonitrile at a mass ratio of 1:100, and place it under 300W for ultrasonic dispersion for 15 minutes to prepare a mixed Dispersion liquid: Weigh 105mL of mixed dispersion liquid and 20g of polyethylene oxide with a molecular weight of 4,000,000 and place them in a 1,000mL three-necked flask, heat in a water bath at 85°C for 6h, and then add 20g of polyethylene oxide with a molecular weight of 534,000 to the three-necked flask after the water bath heating is completed. Polyvinylidene fluoride, insulated and stirred for 12 hours, filtered the filtrate while it was hot, and put the filtrate at 50°C to rotary evaporate to 1 / 8 of the volume of the filtrate to prepare a modified concentrated solution; weigh 6g N719 ruthenium dye, 200mL tert-butyl Alcohol and 220mL of acetoni...

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Abstract

The invention relates to a method for preparing a crystal homogeneous type perovskite thin film, and belongs to the technical field of preparation of solar energy materials. According to the invention, the sensitizing dye-adsorbed zeolite is doped into an electrolytic sol, and thanks to the high sensitizing dye loaded in pores of the zeolite, the problems of high charge recombination rate, poor electrical contact and low conductivity in an electrolyte material is effectively modified; and meanwhile, the electrolyte is spin-coated as a base layer, so that the lead halide can be penetrated as much as possible into a mesoporous layer to become a perovskite film electron transport layer, the perovskite film is enabled to have uniform crystallite size distribution and a smooth surface, the light absorption capability of the thin film is enhanced, the charge transport capacity is enhanced, charges in the perovskite thin film are allowed to be effectively transported, the interfacial recombination is inhibited, the charge loss is reduced, the effective control of the perovskite crystallization and thin film morphology is achieved, the solar cell use efficiency is increased, and a wide range of use prospect is gained.

Description

technical field [0001] The invention relates to a method for preparing a crystal uniform perovskite thin film, belonging to the technical field of solar material preparation. Background technique [0002] In recent years, thin-film solar cells have developed rapidly, which are divided into amorphous silicon thin-film solar cells, polycrystalline silicon thin-film solar cells, GaAs thin-film solar cells, CuInSes thin-film solar cells, etc., especially perovskite solar cells with their unique The advantages have attracted the research of many scholars. And it has achieved rapid development in recent years, and its photoelectric conversion efficiency has increased from 3.8% in 2009 to more than 20% today. The advantages of high efficiency, low cost, relatively simple process, and low pollution have made perovskite solar cells widely developed and have great application value. In today's increasingly tense energy environment and increasingly prominent environmental problems, i...

Claims

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Application Information

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IPC IPC(8): H01L51/48
CPCH10K71/13H10K2102/00Y02E10/549
Inventor 陈刚王艳芹
Owner 常州市瑞泰物资有限公司
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