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Upconversion transparent ceramic and application thereof in improvement of photoelectric conversion efficiency of crystalline silicon solar cells

A technology of photoelectric conversion efficiency and solar cells, applied in circuits, photovoltaic power generation, electrical components, etc., can solve problems such as no research reports, achieve good transparency, high conversion efficiency, and increase absorption and utilization

Inactive Publication Date: 2018-12-14
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there is no relevant research report on the application of erbium ion-doped yttrium oxide-based transparent ceramics in improving the photoelectric conversion efficiency of crystalline silicon solar cells.

Method used

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  • Upconversion transparent ceramic and application thereof in improvement of photoelectric conversion efficiency of crystalline silicon solar cells
  • Upconversion transparent ceramic and application thereof in improvement of photoelectric conversion efficiency of crystalline silicon solar cells
  • Upconversion transparent ceramic and application thereof in improvement of photoelectric conversion efficiency of crystalline silicon solar cells

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preparation example Construction

[0031]The up-conversion erbium ion-doped yttrium oxide-based transparent ceramics of the present invention can be prepared by a variety of ceramic preparation methods, such as coprecipitation, sol-gel method, combustion method, gel injection molding, tape casting, atmosphere sintering, thermal Pressing and sintering, etc., the present invention provides a specific process for the preparation of up-conversion erbium ion doped yttrium oxide-based transparent ceramics, but is not limited thereto.

[0032] The preparation method of the up-conversion erbium ion-doped yttrium oxide-based transparent ceramics provided by the present invention first adopts the solid-phase method to prepare the precursor powder, and then adopts the dry pressing method to prepare the biscuit, and then performs isostatic in a cold isostatic press. Press molding, then sinter ceramics by vacuum sintering, and finally anneal in air atmosphere to remove residual stress and color centers, and obtain up-convers...

Embodiment 1～11

[0043] The chemical formulas of the up-conversion erbium ion-doped yttrium oxide-based transparent ceramics in Examples 1-11 are shown in Table 1.

[0044] The preparation method of the up-conversion erbium ion-doped yttrium oxide-based transparent ceramics of Examples 1-11 is as follows, and the specific raw materials and process conditions used are as shown in Table 1:

[0045] Step 1, according to the chemical formula (Y 1-x-y Er x m y ) 2 o 3 , Weigh the solid compound of Y element, Er element and M element according to the molar ratio, put it into a ball mill jar, and grind it mechanically for 24-60 hours to obtain the precursor powder;

[0046] Among them, the solid compound is preferably an oxide, a fluoride, a chloride or a salt containing corresponding elements;

[0047] Step 2, putting the precursor powder obtained in step 1 into a mold for dry pressing and molding, and putting the obtained green body into a cold isostatic pressing machine for isostatic pressing...

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Abstract

The invention relates to an upconversion transparent ceramic and the application thereof in improvement of photoelectric conversion efficiency of crystalline silicon solar cells and belongs to the technical field of transparent ceramics. The problem that the conventional crystalline silicon solar cell cannot absorb photons of which the wavelength is greater than a band gap width is solved, and thephotoelectric conversion efficiency of the crystalline silicon solar cell is improved. The transparent ceramic disclosed by the invention has a chemical formula of (Y1-x-yErxMy)2O3. In the formula, Mis one or several of Sc, La, Gd, Lu, Zr, Hf, Zn and Li, x and y are elemental molar fractions, x is more than 0 and less than or equal to 0.2, y is more than or equal to 0 and less than 0.5, and thesum of x and y is more than 0 and less than 0.5. According to the transparent ceramic, the crystalline silicon solar cell has invariable absorption on photons having the wavelength of less than 1100nmin sunlight, and the photoelectric conversion efficiency of the crystalline silicon solar cell can be improved by utilizing photons of which the wavelengths are positioned at 1430-1600nm.

Description

technical field [0001] The invention belongs to the technical field of application of transparent ceramics, in particular to an up-conversion erbium ion-doped yttrium oxide-based transparent ceramic and its application in improving the photoelectric conversion efficiency of crystalline silicon solar cells. Background technique [0002] So far, electricity and fuels for the world's energy needs mainly come from coal, oil and natural gas. However, the tens of billions of tons of carbon dioxide produced by the combustion of these fossil fuels has accelerated the greenhouse effect, and coal-fired power generation has also released a large amount of pollutants such as arsenic, lead, and sulfur. These by-products have had a huge impact on the environment and the economy. [0003] The sun radiates about 100,000 terawatts of energy to the earth every year, which is about 10,000 times the total annual global energy demand. Therefore, using solar energy is an important means for huma...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B35/505C04B35/622C04B35/626H01L31/054H01L31/055
CPCC04B35/505C04B35/622C04B35/62605C04B2235/3224C04B2235/3227C04B2235/6567C04B2235/9653H01L31/0547H01L31/055Y02E10/52
Inventor 张家骅吴昊郝振东张亮亮张霞潘国徽武华君
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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