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Luminescent material as well as preparation method and application of luminescent material

A luminescent material, rare earth luminescent technology, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation, etc., can solve the problems of spectral response mismatch, low energy conversion efficiency, and inability to generate carriers, etc., to achieve spectral response matching Good performance, the effect of improving energy conversion efficiency

Inactive Publication Date: 2017-06-13
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the energy conversion efficiency of commercial silicon-based solar cells is about 20%, even in the laboratory, the energy conversion efficiency of a single silicon-based solar cell is only about 30%.
The main reason for the low energy conversion efficiency of silicon-based solar cells is that their spectral response does not match the solar spectrum: long-wavelength light energy below the band gap of silicon cannot be absorbed by the matrix, and this part of the energy cannot generate carriers.

Method used

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  • Luminescent material as well as preparation method and application of luminescent material
  • Luminescent material as well as preparation method and application of luminescent material
  • Luminescent material as well as preparation method and application of luminescent material

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Embodiment 1

[0056] In this embodiment, the chemical composition molecular formula of the luminescent material is Yb 0.10 Er 0.05 Gd 2.85 Al 2 Ga 3 o 12 .

[0057] The preparation method of the luminescent material powder is as follows:

[0058] (1) Weigh ytterbium oxide, erbium oxide, gadolinium oxide, gallium oxide, and aluminum sulfate according to the stoichiometric ratio of each element, dissolve them in the mixed acid of nitric acid and hydrochloric acid, and make a mixed solution with a concentration of 0.3mol / L A;

[0059] (2) select the mixed alkali of ammoniacal liquor and ammonium bicarbonate as precipitant, add deionized water, be made into the precipitant solution B that concentration is 2mol / L, wherein the mol ratio of ammoniacal liquor and ammonium bicarbonate is 1:4;

[0060] (3) Add the mixed solution A dropwise to the precipitant solution B, accompanied by vigorous mechanical stirring during the dropping process, wherein the dropping speed of the mixed solution A i...

Embodiment 2

[0064] In this embodiment, the chemical composition molecular formula of the luminescent material is Yb 0.10 Er 0.05 Gd 2.85 Al 2 Ga 3 o 12 .

[0065] The preparation method of the luminescent material powder is as follows:

[0066] (1) Weigh ytterbium oxide, erbium oxide, gadolinium oxide, gallium oxide, and aluminum sulfate according to the stoichiometric ratio of each element, dissolve them in the mixed acid of nitric acid and hydrochloric acid, and make a mixed solution with a concentration of 0.3mol / L A;

[0067] (2) select the mixed alkali of ammoniacal liquor and ammonium bicarbonate as precipitant, add deionized water, be made into the precipitant solution B that concentration is 2mol / L, wherein the mol ratio of ammoniacal liquor and ammonium bicarbonate is 1:4;

[0068] (3) The container holding the precipitant solution B is placed in the ultrasonic pool, and then the mixed solution A is added dropwise to the precipitant solution B, so that the dropping process...

Embodiment 3

[0073] In this embodiment, the chemical molecular formula of the luminescent material is Yb 0.15 Er 0.05 Gd 2.8 Al 2 Ga 3 o 12 .

[0074] The preparation method of the luminescent material powder is as follows:

[0075] (1) Weigh ytterbium oxide, erbium oxide, gadolinium oxide, gallium oxide, and aluminum sulfate according to the stoichiometric ratio of each element, dissolve them in the mixed acid of nitric acid and hydrochloric acid, and make a mixed solution with a concentration of 0.3mol / L A;

[0076] (2) select the mixed alkali of ammoniacal liquor and ammonium bicarbonate as precipitant, add deionized water, be made into the precipitant solution B that concentration is 2mol / L, wherein the mol ratio of ammoniacal liquor and ammonium bicarbonate is 1:4;

[0077] (3) The container holding the precipitant solution B is placed in the ultrasonic pool, and then the mixed solution A is added dropwise to the precipitant solution B, so that the dropping process is carried o...

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Abstract

The invention provides a luminescent material. The luminescent material has a garnet crystal structure and a chemical composition molecular formula is (Ybx,Rey,Az,Gd3-x-y-z)(Gaw,Al5-w)O12, wherein Re comprises an Er element and A is one or a combination of two or more of elements Y, Lu, B, Tb and Sc; x, y, z and w are mol content of the corresponding elements; the x is more than 0.01 and less than 1.2, the y is more than 0.01 and less than 1.2, the z is more than 0 and less than 1.5 and the w is more than 2 and less than 3. The luminescent material provided by the invention can be used for converting an infrared spectrum with the wavelength of being close to 980nm into visible light for emitting, so that a light spectrum modification material is applied to silicon-based solar cells and the light spectrum responding matching property between a light spectrum and the silicon-based solar cells is better, and furthermore, the energy conversion efficiency of the silicon-based solar cells is improved.

Description

technical field [0001] The invention relates to the technical field of luminescent materials and solar cells, in particular to a luminescent material, its preparation method and application in silicon-based solar cells. Background technique [0002] Solar energy is an environmentally friendly energy source, which radiates more than one billion terawatt-hours of energy to the earth every year. The development of photovoltaic technology that can convert solar energy into usable electrical energy has also become one of the best options to solve the energy crisis of mankind. Silicon-based photovoltaic materials have accounted for 90% of the global photovoltaic material market, so the preparation of silicon-based photovoltaic materials and the improvement of their energy conversion efficiency have become one of the key issues in the development of photovoltaic technology. [0003] However, the energy conversion efficiency of commercial silicon-based solar cells is about 20%, eve...

Claims

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Application Information

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IPC IPC(8): C09K11/62H01L31/032H01L31/042
CPCY02E10/50C09K11/7792H01L31/032H01L31/0321H01L31/042
Inventor 罗朝华蒋俊江浩川张继云刘永福
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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