Material capable of emitting near-infrared light by virtue of conversion of ultraviolet light as well as preparation method and application thereof

A near-infrared light and ultraviolet light technology, applied in luminescent materials, photovoltaic power generation, chemical instruments and methods, etc., can solve problems such as unreported, achieve the effect of easy product, improve photoelectric conversion efficiency, and strong absorption

Active Publication Date: 2015-07-22
徐州博创建设发展集团有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And the Yb prepared by the present invention 3+ doped molybdate La 7-7x Yb 7x Mo 7 o 30 (0.0001≤ x ≤0.4) luminescent material, studies have shown that it can also realize ultraviolet light conversion and emit near-infrared light, which

Method used

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  • Material capable of emitting near-infrared light by virtue of conversion of ultraviolet light as well as preparation method and application thereof
  • Material capable of emitting near-infrared light by virtue of conversion of ultraviolet light as well as preparation method and application thereof
  • Material capable of emitting near-infrared light by virtue of conversion of ultraviolet light as well as preparation method and application thereof

Examples

Experimental program
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Example Embodiment

[0044] Example 1: Preparation of La by high temperature solid phase method 6.9993 Yb 0.0007 Mo 7 O 30 , That is, various oxides or carbonates as raw materials are mixed according to the target composition stoichiometric ratio, and then synthesized in an air atmosphere under normal pressure.

[0045] First, according to the chemical formula La 6.9993 Yb 0.0007 Mo 7 O 30 The stoichiometric ratio of each element in the lanthanum oxide La 2 O 3 :2.28g, Ytterbium oxide Yb 2 O 3 :0.00028 grams, molybdenum oxide MoO 3 :2.02g, after grinding and mixing uniformly in an agate mortar, select air atmosphere for the first calcination, temperature is 300℃, calcination time is 3 hours, cool to room temperature, take out the sample. Then, the previous step sample was fully ground and mixed uniformly again, calcined in an air atmosphere, the calcining temperature was 500°C, the calcining time was 4 hours, cooled to room temperature, and the sample was taken out. Finally, the sample in the previous...

Example Embodiment

[0050] Example 2: The same high temperature solid phase method is used to prepare the material La that can realize ultraviolet light conversion and emit near-infrared light 6.93 Yb 0.07 Mo 7 O 30 .

[0051] First, according to the chemical formula La 6.93 Yb 0.07 Mo 7 O 30 The stoichiometric ratio of each element in the lanthanum carbonate La 2 (CO 3 ) 3 ·8H 2 O: 3.18 g, Ytterbium oxide Yb 2 O 3 :0.028g, molybdenum oxide MoO 3 :2.02g, after grinding and mixing uniformly in an agate mortar, select air atmosphere for the first calcination, the temperature is 350℃, the calcination time is 5 hours, then cool to room temperature, take out the sample. The above-mentioned samples were thoroughly ground and mixed uniformly again, calcined in an air atmosphere, the calcining temperature was 600° C., the calcining time was 12 hours, and the samples were cooled to room temperature. Finally, the sample in the previous step was fully ground and then calcined in the air in a muffle furnace. The...

Example Embodiment

[0053] Example 3: Preparation of La by high temperature solid phase method 6.65 Yb 0.35 Mo 7 O 30 .

[0054] First, according to the chemical formula La 6.65 Yb 0.35 Mo 7 O 30 The stoichiometric ratio of each element in the lanthanum hydroxide La(OH) 3 :2.57g, Ytterbium oxide Yb 2 O 3 :0.14g, molybdenum oxide MoO 3 :2.02g, after grinding and mixing uniformly in an agate mortar, choose air atmosphere for the first calcination, temperature is 400℃, calcination time is 6 hours, then cool to room temperature, take out the sample. Grind and mix thoroughly again, calcine in air atmosphere, calcination temperature is 550°C, calcination time is 10 hours, cool to room temperature, and take out the sample. Finally, it is fully ground and then calcined in the air in a muffle furnace. The calcination temperature is 850℃, the calcination time is 12 hours, and it is cooled to room temperature. After taking it out, it is fully ground to obtain La 6.65 Yb 0.35 Mo 7 O 30 .

[0055] After observatio...

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Abstract

The invention discloses a material capable of emitting near-infrared light by virtue of conversion of ultraviolet light as well as a preparation method and application thereof. The chemical formula of the material is La<7-7x>Yb7Mo7O30, wherein x is a doping mole percentage of Yb<3+>, x is more than or equal to 0.0001 and less than or equal to 0.4, and under the active excitation of ultraviolet light of 250nm to 400nm, the material can emit the near-infrared light of 900nm to 1100nm; the material can be prepared in a high-temperature solid-phase method, a sol-gel method and a co-precipitation method and has the advantages of broad excitation from ultraviolet to visible light, strong near-infrared light emitting and the like, and the spectrum mismatching problem between sunlight and a solar battery can be effectively solved, so that the photoelectric conversion efficiency and performance stability of the battery can be improved, and the material not only can be used as an optical conversion material for a silicon-base solar battery, but also can be applied to the analysis and determination fields of products in various industries such as food, medicine and petrochemical engineering.

Description

technical field [0001] The invention relates to a luminescent material, in particular to a material capable of converting ultraviolet light into near-infrared light and its preparation method and application, belonging to the field of luminescent materials in luminescence physics. Background technique [0002] Energy is an important material basis for the survival and development of human society. Throughout the history of human society development, the improvement and replacement of energy has promoted the major progress of human civilization and greatly promoted the development of the world economy and human society. However, energy shortages More and more restricting the sustainable development of the future society, environmental pollution has had a negative impact. Therefore, governments of various countries are paying more and more attention to energy and environmental issues, and it is imperative to develop renewable energy technologies. Among various renewable energ...

Claims

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Application Information

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IPC IPC(8): C09K11/78H01L31/055
CPCY02E10/52
Inventor 乔学斌
Owner 徐州博创建设发展集团有限公司
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