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Near-infrared luminescence transparent glass ceramic and preparation method thereof

A transparent glass and near-infrared technology, applied in the field of solid luminescent materials, can solve the problems of near-infrared luminescence of quenching materials, poor chemical stability and mechanical properties of bulk materials, etc., and achieve excellent mechanical strength and physical and chemical properties, and long fluorescence lifetime , the effect of high fluorescence emission intensity

Inactive Publication Date: 2016-09-21
FUJIAN JIANGXIA UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, currently such materials are mainly prepared by the sol-gel method, and the obtained bulk materials have poor chemical stability and mechanical properties, and residual organic components such as hydroxyl groups (which are extremely difficult to completely eliminate) will quench the near-infrared emission of the material , restricting its practical application [T. Lin, X. Zhang, J. Xu, X. Liu, M. T. Swihart, L. Xu, Appl. Phys. Lett. 103 (2013) 181906]

Method used

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  • Near-infrared luminescence transparent glass ceramic and preparation method thereof
  • Near-infrared luminescence transparent glass ceramic and preparation method thereof
  • Near-infrared luminescence transparent glass ceramic and preparation method thereof

Examples

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Effect test

example 1

[0017] (1) Weigh 56.95mmol SiO 2 , 12mmol Al 2 o 3 , 10mmol CaO, 18mmol Na 2 O, 3mmol In 2 o 3 and 0.05mmol Er 2 o 3 Powder, ground for half an hour and mixed evenly, placed in a crucible, heated to 1520 degrees in a high-temperature furnace and kept for 0.5 hours to obtain a glass solution;

[0018] (2) Quickly pour the glass melt into a copper mold preheated at 300°C to form a precursor glass;

[0019] (3) After the precursor glass was annealed at 500°C and then kept at 660°C for 2 hours, a transparent glass-ceramic doped with 0.1 mol% erbium ions was obtained.

[0020] Microscopic analysis by high-resolution transmission electron microscopy showed that (such as figure 1 Shown): In the glass ceramics, a large number of indium oxide quantum dots with a size of 3-4 nm are evenly distributed on the oxide glass matrix.

[0021] Depend on figure 2 The excitation spectrum in the figure shows that after the surface of the transparent glass-ceramic sample is polished, an ...

example 2

[0023] (1) Weigh 53mmol SiO 2 , 14mmol Al 2 o 3 , 10mmol CaO, 16mmol Na 2 O, 5mmol In 2 o 3 and 2 mmol Er 2 o 3 , after grinding for half an hour and mixing evenly, put it in a crucible, heat it in a high-temperature furnace to 1480°C for 1 hour, and obtain a glass solution;

[0024] (2) Quickly pour the glass melt into a copper mold preheated at 300°C to form a precursor glass;

[0025] (3) After the precursor glass was annealed at 500°C, and then kept at 720°C for 8h, a transparent glass-ceramic doped with 4 mol% erbium ions was obtained.

[0026] After the surface of the sample is polished, a wide ultraviolet excitation band is measured at 320 nm; under the light excitation of 320 nm, the near-infrared fluorescence emission of erbium ions with a peak at 1534 nm is obtained, and the intensity of the fluorescence emission peak is the same as that without indium oxide quantum 8 times the spot sample; and measured 4 I 13 / 2 The fluorescence decay lifetime of the energy...

example 3

[0028] (1) Weigh 64.99 mmol SiO 2 , 10 mmol Al 2 o 3 , 7 mmol CaO, 17 mmol Na 2 O, 1 mmol In 2 o 3 and 0.01 mmol Er 2 o 3 ， After grinding for half an hour and mixing evenly, place it in a crucible, heat it in a high-temperature furnace to 1650°C for 4 hours, and obtain a glass solution;

[0029] (2) Quickly pour the glass melt into a copper mold preheated at 300°C to form a precursor glass;

[0030] (3) After annealing the precursor glass at 480°C, and then holding it at 850°C for 0.5h, a transparent glass-ceramic doped with 0.2 mol% erbium ions was obtained.

[0031] After the surface of the sample is polished, a wide ultraviolet excitation band is measured at 350nm; under the light excitation of 350nm, the near-infrared fluorescence emission of erbium ions with a peak at 1534 nm is obtained, and the intensity of the fluorescence emission peak is the same as that without indium oxide quantum dots. 6 times the sample, measured 4 I 13 / 2 The fluorescence decay lifeti...

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Abstract

The invention discloses near-infrared luminescence transparent glass ceramic. A composition general formula of the near-infrared luminescence transparent glass ceramic is aSiO2-bAl2O3-cCaO-dNa2O-eIn2O3-xEr2O3, wherein a, b, c, d, e and x are molar fractions, and the data ranges are respectively as follows: a is greater than or equal to 40 and is less than or equal to 65, b is greater than or equal to 10 and is less than or equal to 25, c is greater than or equal to 7 and is less than or equal to 15, d is greater than or equal to 12 and is less than or equal to 25, e is greater than or equal to 1 and is less than or equal to 15, x is greater than or equal to 0.01 and is less than or equal to 2, and a+b+c+d+e+x=100. The near-infrared luminescence transparent glass ceramic disclosed by the invention is prepared through a melt quenching method, and an obtained material has the characteristic of near-infrared emission under bandwidth ultraviolet excitation.

Description

technical field [0001] The invention belongs to the field of solid luminescent materials, and in particular relates to a near-infrared luminescent transparent glass ceramic and a preparation method thereof. Background technique [0002] In order to adapt to the low-loss window of silicon-based optical fiber, modern optical fiber communication technology usually uses near-infrared light with a wavelength of 1.54 microns to transmit signals. Rare earth erbium ions are 4 I 13 / 2 → 4 I 15 / 2 The transition emission is located in the 1.54 micron near-infrared light band and is used as doping active ions for optical fiber materials. However, the excitation cross section of erbium ions in the silicon oxide matrix is ​​small (~10 -20 cm 2 ), it is difficult to achieve efficient excitation. In view of this, scientific researchers have achieved the improvement of the near-infrared excitation efficiency of erbium ions by co-doping broadband semiconductor quantum dots such as tin ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/00C03C4/12
CPCC03C4/12C03C10/0018
Inventor 余运龙关翔锋李小燕罗培辉张炜龙陈达贵
Owner FUJIAN JIANGXIA UNIV
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