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Low-dimensional tin halide perovskite, preparation method thereof and application of perovskite

A halide perovskite and tin source compound technology, which is applied in semiconductor/solid-state device manufacturing, photovoltaic power generation, electrical components, etc., can solve the problems of battery inoperability, battery device efficiency decay, etc., and achieve good visible light absorption properties, high Effects on air stability and ease of operation

Inactive Publication Date: 2017-05-31
SHANGHAI TECH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition to being easily oxidized during the preparation process and causing the battery to fail to work, the organic-inorganic tin-halide perovskite film is completely destroyed and decomposed within a few minutes in the air. 2 Efficiency also decays rapidly in the atmosphere
A method for preparing stable tin perovskite thin films is rarely reported

Method used

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  • Low-dimensional tin halide perovskite, preparation method thereof and application of perovskite
  • Low-dimensional tin halide perovskite, preparation method thereof and application of perovskite
  • Low-dimensional tin halide perovskite, preparation method thereof and application of perovskite

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Experimental program
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Effect test

Embodiment 1

[0054] When x=0.2, (PEA) 0.2 (FA) 0.8 SnI 3 Film preparation method:

[0055] Weigh 372.5 mg (1 mmol) of stannous iodide, 137.6 mg (0.8 mmol) of formamidine hydroiodide, and 50 mg (0.2 mmol) of phenethylamine hydroiodide into a 4 mL reagent bottle, then measure 800 μL DMF and 200 μL DMSO was added to the bottle as solvent. After stirring until the solute was completely dissolved in the above solvent, 15.7 mg (0.1 mmol) of stannous fluoride was added as a reducing agent, and heated and stirred at 70° C. for 1 h to obtain a precursor solution A. After the precursor solution A was cooled to room temperature, it was filtered with a 0.22 μm pore size polytetrafluoroethylene syringe filter to obtain the precursor solution B. Take 120 μL of precursor solution B and add it dropwise on the nickel oxide substrate for spin coating. The spin coating is divided into two processes, first at 1000 rpm for 10 s, then at 5000 rpm for 30 s, the whole process is 40 s, and 600 μL of toluene is...

Embodiment 2

[0058] When x=0.4, (PEA) 0.4 (FA) 0.6 SnI 3 Film preparation method:

[0059] Weigh 372.5 mg (1 mmol) of stannous iodide, 103.2 mg (0.6 mmol) of formamidine hydroiodide, and 99.6 mg (0.4 mmol) of phenethylamine hydroiodide into a 4 mL reagent bottle, then measure 800 μL of DMF and 200 μL DMSO was added to the bottle as solvent. After stirring until the solute was completely dissolved in the above solvent, 15.7 mg (0.1 mmol) of stannous fluoride was added as a reducing agent, and heated and stirred at 70° C. for 1 h to obtain a precursor solution A. After the precursor solution A was cooled to room temperature, it was filtered with a 0.22 μm pore size polytetrafluoroethylene syringe filter to obtain the precursor solution B. Take 120 μL of precursor solution B and add it dropwise on the nickel oxide substrate for spin coating. The spin coating is divided into two processes, first at 1000 rpm for 10 s, then at 5000 rpm for 30 s, the whole process is 40 s, and 600 μL of tolue...

Embodiment 3

[0062] When x=1, (PEA) 2 SnI 4 Film preparation method:

[0063] Weigh 372.5 mg (1 mmol) of stannous iodide and 249 mg (1 mmol) of phenethylamine hydroiodide into a 4 mL reagent bottle, then measure 800 μL of DMF and 200 μL of DMSO as solvents and add into the bottle. After stirring until the solute was completely dissolved in the above solvent, 15.7 mg (0.1 mmol) of stannous fluoride was added as a reducing agent, and heated and stirred at 70° C. for 1 h to obtain a precursor solution A. After the precursor solution A was cooled to room temperature, it was filtered with a 0.22 μm pore size polytetrafluoroethylene syringe filter to obtain the precursor solution B. Take 120 μL of precursor solution B and add it dropwise on the nickel oxide substrate for spin coating. The spin coating is divided into two processes, first at 1000 rpm for 10 s, then at 5000 rpm for 30 s, the whole process is 40 s, and 600 μL of toluene is added dropwise at about 35 s. After spin coating, anneal...

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Abstract

The invention provides low-dimensional tin halide perovskite, a preparation method thereof and an application of the perovskite. The low-dimensional tin halide perovskite is characterized in that a phenethylamine compound is doped. The preparation method of the low-dimensional tin halide perovskite is characterized by including the steps: 1 dissolving a tin source compound, an organic-inorganic source compound and the phenethylamine compound in a polar solvent, adding fluoride serving as a reducing agent and stirring the compounds for 1-2 hours at the temperature of 70 DEG C to obtain precursor solution; 2 cooling and filtering the precursor solution, dripping the precursor solution onto a substrate, performing spin-coating and then performing annealing for 20-30 minutes at the temperature of 100 DEG C to obtain a low-dimensional tin halide perovskite film. The perovskite film is low in toxicity, has a low-dimensional structure, high stability, good visible light absorption property and capability of realizing high photoelectric conversion efficiency in a thin-film solar cell, and the photoelectric conversion efficiency can reach about 6%.

Description

technical field [0001] The invention relates to a low-dimensional tin halide perovskite and its preparation and application. Background technique [0002] With the rapid development of human society, with the continuous consumption of fossil energy, we are not only facing more and more severe energy storage problems, but also the ensuing abnormal global ecological environment has brought great challenges to the survival and development of human beings. threat. Therefore, the development of new renewable and non-polluting energy has become an urgent problem for scientific researchers. Among the many new energy sources, solar energy has been widely studied and utilized as an inexhaustible energy source. [0003] As an emerging photoelectric conversion device, organic lead halide perovskite thin-film solar cells have received increasing attention in recent years, and have achieved a photoelectric conversion efficiency of more than 22% within a decade. Organolead halide perovs...

Claims

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Application Information

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IPC IPC(8): H01L51/42H01L51/46
CPCH10K85/30H10K30/15Y02E10/549
Inventor 宁志军廖宇勤
Owner SHANGHAI TECH UNIV
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