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Er-doped transparent glass ceramics containing nanometer sodium yttrium fluoride crystal and its prepn and use

A technology for glass ceramics and transparent glass, which is applied in the field of transparent oxyfluoride glass ceramics and its preparation, can solve the problems of difficulty in single crystal materials and prone to phase transition, and achieves the effects of high visible light up-conversion luminous efficiency and simple process.

Inactive Publication Date: 2007-12-19
FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, according to literature reports [Ralph H.Page, J.Opt.Soc.Am.B15 (1998) 996], due to the phase transition that occurs easily during crystal growth, pulling NaYF 4 Single crystal materials are very difficult

Method used

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Examples

Experimental program
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Effect test

example 1

[0009] Example 1: Analytical pure SiO 2 、Al 2 o 3 、Na 2 CO 3 , YF 3 , NaF and ErF with a purity of 99.99% 3 Powder, according to 0.05 ErF 3 : 40SiO 2 : 25Al 2 o 3 : 18Na 2 CO 3 : 10YF 3 : The ratio of 7NaF (molar ratio) is accurately weighed and mixed; ground in an agate mortar for half an hour to make it into a uniform powder, then placed in a platinum crucible, and heated to 1450°C in a program-controlled high-temperature box-type resistance furnace After holding it for 1 hour, pour the molten liquid into a copper mold preheated at 300°C to form it quickly; put the obtained glass into a resistance furnace, anneal at 450°C for 2 hours, and then cool with the furnace to eliminate internal stress; anneal After the glass phase was heated to 620°C and held for 2 hours, a pink glass doped with 0.05% Er was obtained. 3+ Ionic transparent glass ceramics. The results of PANalytical X′Pert Pro powder X-ray diffractometer and JEM-2010 transmission electron microscope obse...

example 2

[0010] Example 2: Analytical pure SiO 2 、Al 2 o 3 、Na 2 CO 3 , YF 3 , NaF and ErF with a purity of 99.99% 3 Powder, according to 0.2 ErF 3 : 40SiO 2 : 25Al 2 o 3 : 18Na 2 CO 3 : 10YF 3 : The proportioning of 7NaF (molar ratio) is accurately weighed and mixed; After the preparation and heat treatment process identical with example 1, obtain doping 0.2%Er 3+ Ionic, transparent glass ceramics with nanocomposite structures. The sample was polished, and the red and green up-converted luminescent signals were measured with a FLS920 fluorescence spectrometer, and the intensity ratio of the red light to the green light was about 1:6.

example 3

[0011] Example 3: Analytical pure SiO 2 、Al 2 o 3 、Na 2 CO 3 , YF 3 , NaF and ErF with a purity of 99.99% 3 Powder, according to 0.5ErF 3 : 40SiO 2 : 25Al 2 o 3 : 18Na 2 CO 3 : 10YF 3 : The proportioning ratio of 7NaF (molar ratio) is accurately weighed and mixed; After the preparation and heat treatment process identical with example 1, obtain doping 0.5%Er 3+ Ionic, transparent glass ceramics with nanocomposite structures. The sample was polished, and the red and green up-converted luminescent signals were measured with a FLS920 fluorescence spectrometer, and the intensity ratio of the red light to the green light was about 1:1.

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Abstract

The present invention is Er-doped transparent glass ceramics containing nanometer sodium yttrium fluoride crystal and its preparation and use, and relates to light emitting material technology. The glass ceramics has the molar composition of 40SiO2-25Al2O3-xNa2CO3-10YF3-yNaF-zErF3, where x=15-20, y=25-x-z, and z=0.05-2.0. It is prepared through a melt chilling process. The glass ceramics may have the Er3+ doping amount altered to regulate the intensity ratio between the red light and the green light emitted under the excitation of infrared ray, near monochromic green light emitting corresponding to low doping concentration and near monochromic red light emitting corresponding to high doping concentration.

Description

technical field [0001] The invention relates to the field of luminescent materials, in particular to an Er-doped 3+ Contains NaYF 4 Nanocrystalline transparent oxyfluoride glass ceramics and a preparation method thereof. Background technique [0002] In recent years, some scholars have prepared Er 3+ ion-doped NaYF 4 nanocrystalline powders, and found that these powders have good upconversion luminescence properties, indicating that NaYF 4 It is a high-efficiency up-conversion matrix material (refer to N.Menyuk, Appl.Phys.Lett.21 (1972) 159), and has important application prospects in the fields of light display and the like. The scope of application of powder materials has certain limitations. In order to expand the NaYF 4 fields of application, research and development of NaYF 4 Blocks are significant. However, according to literature reports [Ralph H.Page, J.Opt.Soc.Am.B15 (1998) 996], due to the phase transition that occurs easily during crystal growth, pulling Na...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C3/112C03C10/00C03C4/12
Inventor 刘锋王元生陈大钦马恩余运龙
Owner FUJIAN INST OF RES ON THE STRUCTURE OF MATTER CHINESE ACAD OF SCI
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