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Tm<3+>-doped three-photon infrared quantum cutting material and preparation method thereof

A quantum tailoring, infrared technology, applied in luminescent materials, chemical instruments and methods, photovoltaic power generation and other directions, can solve the problem of rare reports of rare earth ion single-doped system infrared quantum tailoring materials, and achieve the effect of improving low work efficiency

Inactive Publication Date: 2013-10-23
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Nevertheless, in many cases, Yb 3+ The infrared luminescence is only derived from the donor ions Ln 3+ The primary resonance energy transfer rather than the quantum tailoring process; on the other hand, ra

Method used

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  • Tm&lt;3+&gt;-doped three-photon infrared quantum cutting material and preparation method thereof
  • Tm&lt;3+&gt;-doped three-photon infrared quantum cutting material and preparation method thereof
  • Tm&lt;3+&gt;-doped three-photon infrared quantum cutting material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Prepare four copies of the following samples: Accurately weigh 0.5589g of yttrium oxide (Y 2 o 3 ) and 0.0096g thulium oxide (Tm 2 o 3 ), dissolved in an appropriate amount of hot concentrated nitric acid, and prepared to a concentration of 0.05mol.L -1 Y(NO 3 ) 3 solution and Tm(NO 3 ) 3 solution; then accurately weigh 0.2100g sodium fluoride (NaF) and 0.5668g ammonium bifluoride (NH 4 HF 2 ), all dissolved in an appropriate amount of deionized aqueous solution to obtain NaF and NH 4 HF 2 mixed solution; under the uniform mixing effect of magnetic stirring, the prepared Y(NO 3 ) 3 and Tm(NO 3 ) 3 Slowly and completely add NaF and NH to the mixed solution 4 HF 2 In the mixed solution; adjust the pH of the mixed solution to 3 by dropping an appropriate amount of ammonia water to form a precursor suspension. After stirring for 30 minutes, move the formed precursor suspension to a stainless steel reaction kettle with a volume of 50ml and a Teflon liner , th...

Embodiment 2

[0030] Accurately weigh 0.5631g of yttrium oxide (Y 2 o 3 ) and 0.0024g thulium oxide (Tm 2 o 3 ), dissolved in an appropriate amount of hot concentrated nitric acid, and prepared to a concentration of 0.05mol.L -1 Y(NO 3 ) 3 solution and Tm(NO 3 ) 3 solution; then accurately weigh 0.2100g sodium fluoride (NaF) and 0.5668g ammonium bifluoride (NH 4 HF 2 ), all dissolved in an appropriate amount of deionized aqueous solution to obtain NaF and NH 4 HF 2 mixed solution; under the uniform mixing effect of magnetic stirring, the prepared Y(NO 3 ) 3 and Tm(NO 3 ) 3 Slowly and completely add NaF and NH to the mixed solution 4 HF 2 In the mixed solution; adjust the pH of the mixed solution to 2 by dropping an appropriate amount of ammonia water to form a precursor suspension. After stirring for 30 minutes, move the formed precursor suspension to a stainless steel reaction kettle with a volume of 50ml and a Teflon liner , the filling degree is 70%. Crystallize in an ov...

Embodiment 3

[0032] Accurately weigh 0.3952g of yttrium oxide (Y 2 o 3 ) and 0.2894g thulium oxide (Tm 2 o 3 ), dissolved in an appropriate amount of hot concentrated nitric acid, and prepared to a concentration of 0.05mol.L -1 Y(NO 3 ) 3 solution and Tm(NO 3 ) 3 solution; then accurately weigh 0.2100g sodium fluoride (NaF) and 0.5668g ammonium bifluoride (NH 4 HF 2 ), all dissolved in an appropriate amount of deionized aqueous solution to obtain NaF and NH 4 HF 2 mixed solution; under the uniform mixing effect of magnetic stirring, the prepared Y(NO 3 ) 3 and Tm(NO 3 ) 3 Slowly and completely add NaF and NH to the mixed solution 4 HF 2 In the mixed solution; adjust the pH of the mixed solution to 6 by dropping an appropriate amount of ammonia water to form a precursor suspension. After stirring for 30 minutes, move the formed precursor suspension to a stainless steel reaction kettle with a volume of 50ml and a Teflon liner , the filling degree is 85%. Crystallize in an ov...

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Abstract

The invention discloses a Tm<3+>-doped three-photon infrared quantum cutting material. The Tm<3+>-doped three-photon infrared quantum cutting material is characterized in that NaYF4 is taken as a matrix, an rare earth ion Tm<3+> is taken as an activator ion, and the chemical constitution is NaY1-yF4:Tmy, wherein y is more than or equal to 0.0025 and less than or equal to 0.30. The invention further discloses a preparation method of the infrared quantum cutting material. The preparation method comprises the following steps of: (1) dissolving NaF and NH4HF2 in deionized water so as to obtain mixed solution of the NaF and the NH4HF2, uniformly mixing the mixed solution of the NaF and the NH4HF2, Y(NO3)3 solution and Tm(NO3)3 solution in a magnetic stirring manner, and regulating the pH value, so as to form precursor suspension liquid; (2) crystallizing the precursor suspension liquid under a hydrothermal condition, carrying out centrifuging after cooling to the room temperature, and drying the product so as to obtain the three-photon infrared quantum cutting material. According to the three-photon infrared quantum cutting material disclosed by the invention, the quantum efficiency is high, and a condition that the conventional solar cell is low in working efficiency can be effectively improved.

Description

technical field [0001] The invention relates to infrared quantum tailoring materials, in particular to a Tm-doped 3+ Three-photon infrared quantum tailoring material and preparation method thereof. Background technique [0002] For a long time, luminescent materials with quantum efficiency greater than 100% have become a research hotspot, and they have great application prospects in optoelectronic devices such as high-efficiency lighting, display, solid-state lasers, and solar cells. Quantum tailoring has been widely studied as an efficient luminescence mechanism. The earliest research is to convert one absorbed high-energy vacuum ultraviolet photon into two visible photon emission. This process can be effectively achieved by single doping Pr 3+ and co-doped Gd 3+ / Eu 3+ Fluorescent materials to achieve (J.Lumin.1974,8,341; J.Lumin.1974,8,344; Science,1999,283,663), this material is expected to be used in high-efficiency mercury-free fluorescent lamps and plasma flat pane...

Claims

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Application Information

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IPC IPC(8): C09K11/85H01L51/46
CPCY02E10/549
Inventor 张勤远禹德朝叶柿
Owner SOUTH CHINA UNIV OF TECH
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