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Photoluminescent transparent inorganic glass converted under far infrared quantum cutting and preparation method thereof

A quantum tailoring and inorganic glass technology, applied in the field of solid luminescent materials, can solve the problems of ineffective absorption and weak near-infrared emission intensity, and achieve good mechanical properties and thermal stability, low cost, and broad application prospects

Inactive Publication Date: 2013-04-17
福建省德化县腾兴陶瓷有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] So far, although the co-operative energy transfer mechanism has confirmed that the material can achieve effective quantum tailoring emission, but in fact the Yb 3+ The near-infrared emission intensity of ions is still very weak, which is mainly due to the donor ions such as Tb 3+ 、Pr 3+ and Tm 3+ Isoabsorption cross section (approximately 10 -21 cm 2 ) is too low to effectively absorb incident photons

Method used

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  • Photoluminescent transparent inorganic glass converted under far infrared quantum cutting and preparation method thereof
  • Photoluminescent transparent inorganic glass converted under far infrared quantum cutting and preparation method thereof
  • Photoluminescent transparent inorganic glass converted under far infrared quantum cutting and preparation method thereof

Examples

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example 1

[0019] Example 1: Analytical pure B 2 o3 、Al 2 o 3 , CaO, Li 2 CO 3 and CeF with a purity of 99.99% 3 , Yb 2 o 3 Powder, according to 0.5CeF 3 : 0.5Yb 2 o 3 : 70B 2 o 3 : 14Al 2 o 3 :7CaO:8Li 2 CO 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1050°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 8 hours , and then, pour the glass melt into a copper mold quickly to shape; put the obtained precursor glass into a resistance furnace, anneal at 430°C for 2 hours and then cool with the furnace to eliminate internal stress. The samples were surface polished, and their room temperature excitation and emission spectra and fluorescence decay curves were measured with a FLS920 fluorescence spectrometer. By monitoring the wavelength of 980nm (corresponding to Yb 3+ ion emission), can be detected correspond...

example 2

[0020] Example 2: Analytical pure B 2 o 3 、Al 2 o 3 , CaO, Li 2 CO 3 and CeF with a purity of 99.99% 3 , Yb 2 o 3 Powder, according to 0.5CeF 3 : 2.5Yb 2 o 3 : 70B 2 o 3 : 12Al 2 o 3 :7CaO:8Li 2 CO 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1100°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 8 hours , and then, pour the glass melt into a copper mold quickly to shape; put the obtained precursor glass into a resistance furnace, anneal at 430°C for 2 hours and then cool with the furnace to eliminate internal stress. The surface of the sample is polished, and the emission spectrum at room temperature is measured with a FLS920 fluorescence spectrometer under the excitation condition of 350nm excitation light, and it is observed that the corresponding Yb 3+ : 2 f 5 / 2 → 2 f 7 / 2 Transition qua...

example 3

[0021] Example 3: Analytical pure B 2 o 3 、Al 2 o 3 , CaO, Li 2 CO 3 and CeF with a purity of 99.99% 3 , Yb 2 o 3 Powder, according to 0.5CeF 3 :5Yb 2 o 3 : 70B 2 o 3 :9.5Al 2 o 3 :7CaO:8Li 2 CO 3 (Molar ratio) is accurately weighed and placed in an agate mortar, ground for more than half an hour to make it evenly mixed, then placed in a platinum crucible, heated to 1150°C in a program-controlled high-temperature box-type resistance furnace, and then kept for 8 hours , and then, pour the glass melt into a copper mold quickly to shape; put the obtained precursor glass into a resistance furnace, anneal at 430°C for 2 hours and then cool with the furnace to eliminate internal stress. The surface of the sample is polished, and the emission spectrum at room temperature is measured with a FLS920 fluorescence spectrometer under the excitation condition of 350nm excitation light, and it is observed that the corresponding Yb 3+ : 2 f 5 / 2 → 2 f 7 / 2 Transition quantu...

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Abstract

The invention discloses a fluorescent transparent inorganic glass converted under far infrared quantum cutting and a preparation method thereof. The fluorescent transparent inorganic glass comprises the following components in mol by percentage, 60-80mol percent of B2O3, 7-15 mol percent of Al2O3, 5-10 mol percent of CaO, 5-10 mol percent of Li2CO3, 0-5 mol percent but not 0 mol percent of CeF3 and 0-10 mol percent but not 0 mol percent of Yb2O3, wherein the total mole content of Al2O3, CeF3 and Yb2O3 is 15 percent. The inorganic glass material can realize high-efficiency converting fluorescence under the excitation of ultraviolet light.

Description

technical field [0001] The invention relates to the field of solid luminescent materials, in particular to a rare earth-doped inorganic glass capable of realizing high-efficiency near-infrared quantum tailoring down-conversion luminescence and a preparation process thereof. technical background [0002] As we all know, the effective response spectrum range of silicon solar cells to incident light is 400-1100nm, and only the incident light in this band can contribute to the photoelectric conversion of silicon cells. One of the important reasons for the low photoelectric conversion efficiency of silicon solar cells is the thermalization effect of charge carriers, that is, each incident photon with energy greater than the band gap of silicon (wavelength ≤ 1100nm) generates only one electron in the semiconductor material- hole pairs, and the rest of the energy is wasted by emitting phonons to thermalize the lattice, whereby the energy lost accounts for about 25% of the incident ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03C3/23
Inventor 陈大钦王元生余运龙
Owner 福建省德化县腾兴陶瓷有限公司
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