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Flexible rare earth transparent luminescent film applied to silicon-based solar cell and preparation method thereof

A technology of solar cells and luminescent films, applied in luminescent materials, chemical instruments and methods, circuits, etc., can solve the problems of inability to prepare large-area films, PVA film wrinkles, and difficulty in application, and achieve easy-to-morphological particles and easy mechanical processing , the effect of low price

Inactive Publication Date: 2019-05-07
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In the patent (a flexible rare earth transparent luminescent film and its preparation method, patent number: ZL201410300592.9), a kind of synthetic nanoclay and PVA loaded with rare earth luminescent materials were used as raw materials to prepare a flexible rare earth transparent luminescent film. PVA is a water-soluble polymer that cannot be used in the field of solar cells. This is because the PVA film is prepared in an aqueous solution. The PVA film will wrinkle or even break when it meets water. It is difficult to apply; and although the preparation method is simple, after the water is evaporated to dryness, it needs to be peeled off from the glass sheet directly with a knife, and it is impossible to prepare a large-area film

Method used

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  • Flexible rare earth transparent luminescent film applied to silicon-based solar cell and preparation method thereof
  • Flexible rare earth transparent luminescent film applied to silicon-based solar cell and preparation method thereof
  • Flexible rare earth transparent luminescent film applied to silicon-based solar cell and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0041] (1) Weigh 667mg tta (3mmol) and dissolve it in 15mL absolute ethanol, add 3mL 1mol / L sodium hydroxide solution, stir and add 10mL 0.1mol / L EuCl 3 ·6H 2 O ethanol solution was stirred at room temperature for 60 minutes, and then 100 mL of double-distilled water was added to precipitate a large amount of precipitate. After the precipitation no longer increased, the reaction was refluxed at 60°C for 5 hours, cooled to room temperature, centrifuged, and dried to obtain a light yellow precipitate, which was recorded as Eu(tta) 3 2H 2 O.

[0042] (2) Weigh Eu(tta) 3 2H 2 O (0.6mmol, 1eq) and pybox (0.6mmol, 1eq) were respectively dissolved in 10mL of absolute ethanol, heated and stirred until completely dissolved, the two were mixed into a 50mL round-bottomed flask, refluxed at 60°C for 5h, after the reaction Let it stand at room temperature, add double-distilled water to precipitate the precipitate, centrifuge, put it in a 60°C oven for 24 hours in vacuum to obtain a lig...

Embodiment 2

[0047] Steps (1) (3) (4) are the same as in Example 1, and pybox (2,6-bis[(4R)-4-phenyl-2-oxazolinyl]pyridine) in step (2) is changed to phen (o-phenanthroline), other conditions remain unchanged, and finally a transparent luminescent film Eu(tta) is obtained 3 phen @PMMA. The film is the same as the luminescent film in Example 1, which is light, thin, uniform and transparent, and the transmittance of the film is greater than 90% in the incident light range of 400-800nm.

[0048] Figure 7 It is the excitation spectrum figure of the flexible transparent luminescent film in embodiment 2, Figure 8 It is the emission spectrum figure of the flexible transparent luminescent film in embodiment 2, rare earth ion Eu 3+ The characteristic emission peak of red light at 612nm is the highest, and the luminescent material is also obviously bright red under ultraviolet light. Figure 9 It is the fluorescence lifetime decay curve of the thin film obtained in Example 2, and the fluoresce...

Embodiment 3

[0050] Steps (1) (2) (4) are the same as in Example 1, and the DMF (N, N-dimethylformamide) in the step (3) is changed into methanol solution, and other conditions are constant, and the film obtained contains a large amount of Caking, because methanol solution has a good dissolution effect on rare earth complexes, but the dissolution effect on PMMA is average, and there are many insoluble substances, which affect the final effect of the film.

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Abstract

The invention relates to a flexible rare earth transparent luminescent film applied to a silicon-based solar cell and a preparation method thereof. The composition of the film comprises a rare earth complex and a polymer matrix material (PMMA); wherein the mass ratio of rare earth complex: PMMA is 1: 40-60; and the rare earth complex is Ln(L1)3(L2)1, Ln is a rare earth element, L1 is a first organic ligand, L2 is a second organic ligand, and L1 and L2 are different; wherein the rare earth element Ln is specifically one or more of Eu, Tb and Yb. The preparation method is simple and rapid, and the flexible rare earth transparent luminescent film is 20-30 or more times larger than the film in the conventional work. The size of the film provides a good foundation for further improving the utilization of sunlight and promoting the large-scale use of the silicon-based solar cell.

Description

technical field [0001] The invention belongs to the field of rare earth light-emitting materials, and relates to a flexible rare-earth transparent light-emitting film for silicon-based solar cells, in particular to a preparation method of a high-efficiency, transparent light-emitting film based on the synthesis of polymer materials and rare earth complexes and its application on silicon-based applications on solar cells. Background technique [0002] With the rapid development of the economy, the global consumption of energy is also increasing day by day, and the energy problem has become a key factor restricting social development. Traditional fossil energy is a non-renewable resource, and the use of it is accompanied by a large amount of greenhouse gas emissions, causing immeasurable damage to the environment. At present, the development of new renewable and non-polluting green energy has become the primary issue in the process of our social development. Solar energy has...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L33/12C08K5/00C08J5/18C09K11/02C09K11/06H01L31/055
CPCY02E10/52
Inventor 李焕荣杨大清王弋戈郭蕾张心月
Owner HEBEI UNIV OF TECH
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