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Efficient rare earth complex light-emitting film as well as preparation method and application thereof

A technology of rare earth complexes and luminescent thin films, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve problems such as low utilization rate, life attenuation, loss, etc., and achieve the goal of reducing land area and improving photoelectric conversion efficiency Effect

Inactive Publication Date: 2021-11-12
HEBEI UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The bandgap width of silicon-based solar cells is 1000nm, which shows a certain mismatch with the standard solar radiation spectrum (GlobeAM1.5), especially in the ultraviolet band. The obvious spectral mismatch makes the utilization rate of silicon solar cells for ultraviolet light are not high, they are lost in the form of lattice thermal vibrations, resulting in lower external quantum efficiencies of silicon solar cells in the ultraviolet region
In addition, ultraviolet light will cause a certain degree of aging and yellowing to the EVA used in traditional packaging solar cell components, which will eventually lead to a decrease in battery efficiency and life attenuation during battery use.

Method used

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  • Efficient rare earth complex light-emitting film as well as preparation method and application thereof
  • Efficient rare earth complex light-emitting film as well as preparation method and application thereof
  • Efficient rare earth complex light-emitting film as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Dissolve 4mmol of TTA in 5ml of ethanol solution, add 4mmol of 0.1mol / L NaOH in absolute ethanol to deprotonate the TTA ligand, reflux at 60°C, and add 1mmol of 0.1mol / L EuCl 3 Ethanol solution, after two hours of reaction, add 2ml of 0.5mol / L tetraphenylphosphine chloride aqueous solution to it, react for two hours and cool to room temperature, add a large amount of distilled water to obtain a precipitate, then wash and dry the precipitate, Recorded as Eu(TTA) 4 TPP;

[0041] 2) Eu(TTA) in step 1) 4 2.5mg of TPP complex was dissolved in 20ml of dichloromethane solvent;

[0042] 3) Add 5g of EVA to 50ml of toluene solution, condense and reflux at 80°C, add the solution obtained in 2) after the solution is cooled, and perform ultrasonic stirring; the doping ratio of the impurity medium in the polymer matrix is ​​0.05%

[0043] 4) Drop the solution of process 3) into a petri dish with a diameter of 17cm, and place it on a plate at 100°C to heat it to be cured to fo...

Embodiment 2

[0053] 1) 4mmol of NTA was dissolved in 5ml of ethanol solution, and 4mmol of NaOH in absolute ethanol solution was added to deprotonate the NTA ligand. The remaining experimental operations were the same as step 1) in Example 1, and the dried luminescent material was recorded as Eu(NTA ) 4 TPP; 2) Eu(NTA) in step 1) 4 TPP complex 0.05mmol is dissolved in the dichloromethane solvent of 20ml; 3), 4) step is with the step 3) in the embodiment 1, 4) gained film is marked as Eu(NTA) 4 TPP-EVA film. The thin film, silicon-based solar cell, base plate and photovoltaic glass are packaged by vacuum lamination.

Embodiment 3

[0055] 1) 4mmol of HFA was dissolved in 5ml of ethanol solution, and 4mmol of NaOH in absolute ethanol solution was added to deprotonate the HFA ligand. The remaining experimental operations were the same as step 1) in Example 1, and the dried luminescent material was recorded as Eu(HFA ) 4 TPP; 2) Eu(HFA) in step 1) 4 TPP complex 0.05mmol is dissolved in the dichloromethane solvent of 20ml; 3), 4) step is with the step 3) in the embodiment 1, 4) gained film is marked as Eu(HFA) 4 TPP-EVA film. The thin film, silicon-based solar cell, base plate and photovoltaic glass are packaged by vacuum lamination.

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Abstract

The invention relates to an efficient rare earth complex light-emitting film as well as a preparation method and application thereof. The film is composed of a doped medium Ln-quaternary-beta-diketone-tetraphenylphosphine cation complex and a polymer matrix, wherein the mass of the doped medium is 0.01%-90% of the mass of the polymer matrix film; and the structural formula of the doped medium Ln (beta-diketone) 4-phosphonium salt counter cation complex is shown in the description. The Ln (beta-diketone) 4-tetraphenylphosphine cation complex light-emitting film researched and developed by the invention has excellent optical performance, and the photoelectric conversion efficiency of a silicon-based solar cell can be improved due to the good performance of the Ln (beta-diketone) 4-tetraphenylphosphine cation complex light-emitting film. Meanwhile, the light-emitting film can effectively protect EVA from being degraded due to ultraviolet irradiation.

Description

technical field [0001] The invention belongs to the application field of rare earth luminescent materials, and relates to a preparation method of a rare earth quaternary complex luminescent thin film with high-efficiency luminescence and its application in solar cells. Background technique [0002] With the rapid development of today's world economy, the foundation of traditional fossil energy has become unstable, and now all countries in the world are devoting themselves to new technologies to develop various renewable new energy sources. Among various renewable energy sources, solar energy has become the most important renewable energy source due to the abundant sunshine all year round and the advancement of technology to capture light energy. For many years, solar photovoltaic cells have become the main way to use solar energy because it is not only renewable, but also safe and non-polluting. Among them, various types of silicon-based solar cells have achieved large-scal...

Claims

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Application Information

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IPC IPC(8): C08J5/18C08L23/08C08L33/12C08L29/14C08K5/00C08K5/50C09K11/02C09K11/06H01L31/055
CPCC08J5/18C09K11/025C09K11/06H01L31/055C08J2323/08C08J2333/12C08J2329/14C08K5/0091C08K5/50C09K2211/182C09K2211/1007C09K2211/1011Y02E10/50Y02E10/52
Inventor 李焕荣王元尹健张光睿张秀荣李璐赵长玉彭维
Owner HEBEI UNIV OF TECH
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