Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material

A luminescent material, VO2 technology, applied in the direction of luminescent materials, chemical instruments and methods, etc., can solve the problems that solar cells cannot use infrared light, low conversion rate of solar cells, etc., achieve low experimental raw materials, improve conversion efficiency, and reduce experimental steps Effect

Active Publication Date: 2015-08-26
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that existing solar cells cannot utilize infrared light, resulting in low conversion rates of solar cells, and provide an Er 3+ and Yb 3+ double doped VO 2 up-conversion luminescent material

Method used

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  • Er&lt;3+&gt; and Yb&lt;3+&gt; double-doped VO2 up-conversion luminescent material
  • Er&lt;3+&gt; and Yb&lt;3+&gt; double-doped VO2 up-conversion luminescent material
  • Er&lt;3+&gt; and Yb&lt;3+&gt; double-doped VO2 up-conversion luminescent material

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specific Embodiment approach 1

[0028] Specific implementation mode one: this implementation mode is an Er 3+ and Yb 3+ double doped VO 2 The up-conversion luminescent material is prepared according to the following steps:

[0029] a kind of Er 3+ and Yb 3+ double doped VO 2 The up-conversion luminescent material is prepared according to the following steps:

[0030] One, will Er 2 o 3 and Yb 2 o 3 Add it into nitric acid with a mass fraction of 65% to 68%, then heat it on a universal electric furnace with a power of 500W to 1000W for 10min to 20min, then add distilled water to obtain a mixed solution A;

[0031] Er described in step 1 2 o 3 with Yb 2 o 3 The molar ratio of the substance is 2:(4~10);

[0032] Er described in step 1 2 o 3 The volume ratio of the amount of substance and the mass fraction of 65%~68% nitric acid is 2mol:(2mL~10mL);

[0033] The mass fraction described in step one is that the volume ratio of nitric acid and distilled water of 65%~68% is (2~10):5;

[0034] Second, ...

specific Embodiment approach 2

[0052] Specific implementation mode two: the difference between this implementation mode and specific implementation mode one is: Er described in step one 2 o 3 with Yb 2 o 3 The molar ratio of the substance is 2:(4~7). Other steps are the same as in the first embodiment.

specific Embodiment approach 3

[0053] Specific implementation mode three: the difference between this implementation mode and specific implementation mode one or two is: Er described in step one 2 o 3 with Yb 2 o 3 The molar ratio of the substance is 2:(7~10). Other steps are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses an Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material, relates to an up-conversion luminescent material, and aims at solving the problem that infrared light cannot be utilized by an existing solar cell, so that the conversion rate of the solar cell is low. The method comprises the following steps: adding Er2O3 and Yb2O3 into nitric acid with the mass fraction of 65%-68%; adding V2O5 and oxalic acid, carrying out hydrothermal reaction, and obtaining a dried reactant; and burning the dried reactant, and obtaining the Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material. The prepared Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material is a nanosheet; the thickness of the nanosheet is 20-50nm; and the Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material is a nanometer material. The Er<3+> and Yb<3+> double-doped VO2 up-conversion luminescent material can be obtained.

Description

technical field [0001] The invention relates to an up-conversion luminescent material. Background technique [0002] In the case of decreasing fossil fuels, solar energy, as a renewable energy source, is an environmentally friendly and clean energy source in the true sense. It is very friendly to the environment and achieves zero greenhouse gas emissions. A solar cell is a device that directly converts light energy into electrical energy through the photoelectric effect or photochemical effect. Although there are many advantages of solar cells, such as: faster charging, more than 5 times longer life, and a wider charging temperature range. However, the photoelectric conversion efficiency of solar cells is low. The first solar cell was successfully prepared by Charles Fritts in 1883, with an efficiency of only 1%. At present, the conversion efficiency of monocrystalline silicon solar energy is only 24%. For a solar cell, the main reason for its low conversion efficiency is ...

Claims

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Application Information

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IPC IPC(8): C09K11/69
Inventor 王锐徐欢欢张昱屾徐衍岭李月梅茹毅周建军刘秩桦
Owner HARBIN INST OF TECH
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