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A kind of preparation method of y2-xybxo3 down conversion luminescent film

A light-emitting film, y2-xybxo3 technology, applied in the field of solar cells, can solve the problems of low production efficiency and high cost, and achieve the effect of low cost, high coating efficiency, and easy large-area industrial coating

Inactive Publication Date: 2016-02-24
XIAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a Y 2-x Yb x o 3 The preparation method of the down-conversion luminescent film solves the problems of high cost and low production efficiency in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Fabrication of Y in silico 1.995 Yb 0.005 o 3 Single layer down conversion film:

[0029] 1) Weigh 530.7456g of yttrium acetate and 1.7509g of ytterbium acetate respectively, and then dissolve them in 3853ml of methanol (the concentration of the total amount of yttrium acetate and ytterbium acetate in methanol is 0.5 mol / liter), and stir until transparent;

[0030] 2) Add 444.471g of propionic acid to the solution obtained in 1) (the molar ratio of the carboxyl group in propionic acid to the total amount of yttrium acetate and ytterbium acetate is 3), stir and age for 3h;

[0031] 3) Plating the aged solution in 2) on a silicon wafer at a pulling speed of 50 mm / min, and drying at a temperature of 60° C. for 15 minutes to obtain a precursor film;

[0032] 4) The precursor film obtained in 3) is heat-treated on a silicon wafer at 950° C. for 5 minutes to obtain.

Embodiment 2

[0034] Fabrication of Y in silico 1.99 Yb 0.01 o 3 Two-layer down conversion film:

[0035] 1) Weigh 529.4154g of yttrium acetate and 3.5017g of ytterbium acetate respectively, and then dissolve them in 1913ml of methanol (the concentration of the total amount of yttrium acetate and ytterbium acetate in methanol is 1 mol / liter), and stir until transparent;

[0036] 2) Add 461.2013g polyacrylic acid to the solution obtained in 1) (the molar ratio of the carboxyl group in the polyacrylic acid to the total amount of yttrium acetate and ytterbium acetate is 3.2), stir and age for 24h;

[0037] 3) Plating the aged solution in 2) on a silicon wafer at a pulling speed of 100 mm / min, and drying at a temperature of 70° C. for 10 minutes to obtain a precursor film;

[0038] 4) The precursor film obtained in 3) is heat-treated on a silicon wafer at 850° C. for 10 minutes to obtain.

[0039] 5) Repeat steps 3) and 4) once.

Embodiment 3

[0041] Fabrication of Y in silico 1.85 Yb 0.15 o 3 Four-layer down conversion film:

[0042] 1) Weigh 492.1701g of yttrium acetate and 52.5261g of ytterbium acetate respectively, and then dissolve them in 19913ml of methanol (the concentration of the total amount of yttrium acetate and ytterbium acetate in methanol is 0.1 mol / liter), and stir until transparent;

[0043] 2) Add 492.2181g of propionic acid to the solution obtained in 1) (the molar ratio of the carboxyl group in propionic acid to the total amount of yttrium acetate and ytterbium acetate is 3.3), stir and age for 48h;

[0044] 3) Plating the aged solution in 2) on a silicon wafer at a pulling speed of 150 mm / min, and drying at a temperature of 85° C. for 5 minutes to obtain a precursor film;

[0045] 4) The precursor film obtained in 3) is heat-treated on a silicon wafer at 800° C. for 20 minutes to obtain.

[0046] 5) Repeat steps 3) and 4) three times.

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Abstract

The invention discloses a preparation method of a Y2-xYbxO3 down-conversion luminescent film. The yttrium acetate and the ytterbium acetate are weighed respectively, and then dissolved in an alcohol solvent and stirred until transparent; then, propionic acid or polyacrylic acid is added to stir and aged; The aged solution is plated on a silicon chip or a photovoltaic glass sheet, and dried to obtain a precursor film; the precursor film is heat-treated on the silicon chip or a photovoltaic glass sheet to obtain a Y2-xYbxO3 down-conversion luminescent film. Compared with the physical coating method, the preparation method of the Y2-xYbxO3 down-conversion luminescent film of the present invention has the advantages of simple process flow, low cost, high coating efficiency, and easy realization of large-area industrialized coating.

Description

technical field [0001] The invention belongs to the technical field of solar cells, and relates to the preparation of a down-converting luminescent film capable of improving the conversion rate of silicon-based solar cells for radio and television, in particular to a Y 2-x Yb x o 3 A method for preparing a down-conversion luminescent film. Background technique [0002] Compared with traditional fossil energy sources such as coal and petroleum, solar energy has significant advantages such as environmental protection and renewable energy. At present, the mainstream technology of solar energy utilization is photovoltaic power generation. However, a large number of ultraviolet-visible light photons with energy higher than the energy gap of silicon in sunlight cause serious energy loss due to thermalization of carriers, which is one of the main reasons for the low photoelectric conversion efficiency of silicon-based solar cells. This problem can be spectrally modulated to con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K11/78
Inventor 李峰赵高扬陈源清游才印何航飞
Owner XIAN UNIV OF TECH