Tm<3+> single-doped three-photon infrared quantum cutting microcrystalline glass as well as preparation method and application thereof

A technology of glass-ceramics and quantum tailoring, which is applied in the field of oxyfluorogermanate glass-ceramics, can solve the problems of infrared emission mechanism analysis interference, three-photon emission infrared quantum tailoring process that has not been realized and reported, and multi-energy problems. To achieve the effect of improving the photoelectric conversion efficiency

Inactive Publication Date: 2014-05-07
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0003] Nevertheless, people often only base their understanding of RE on the basis of cooperative or resonant energy transfer mechanisms 3+ / Yb 3+ Two-photon infrared quantum tailoring of co-doped systems is studied. In many cases, Yb 3+ The co-doping of the donor ions RE 3+ The analysis of the infrared emission mechanism produces interference, and even Yb 3+ The luminescence is only derived from the RE 3+ One-step resonance energy transfer instead of quantum tailoring; on the other hand, the previously reported infrared quantum tailoring is two-photon emission, which still has relatively more energy to be dissipated
In addition, people are interested in RE 3+ The multi-photon quantum tailoring of the single-doped system is often rarely paid attention to and studied, especially the rare earth doped transparent glass-ceramics as an effective quantum tailoring material, and its three-photon emission infrared quantum tailoring process has never been realized or reported.

Method used

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  • Tm&lt;3+&gt; single-doped three-photon infrared quantum cutting microcrystalline glass as well as preparation method and application thereof
  • Tm&lt;3+&gt; single-doped three-photon infrared quantum cutting microcrystalline glass as well as preparation method and application thereof
  • Tm&lt;3+&gt; single-doped three-photon infrared quantum cutting microcrystalline glass as well as preparation method and application thereof

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Experimental program
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Effect test

Embodiment 1

[0027] According to Tm 3+ Monodoped with LaF 3 Molar ratio composition of nanocrystalline oxyfluorogermanate glass-ceramic 50GeO 2 -20Al 2 o 3 -15LaF 3 -15LiF-xTmF 3 (x=0.50), weigh the proportion (20g) respectively according to the nominal molar composition, put 9.7681g germanium dioxide (GeO 2 ), 3.8087g aluminum oxide (Al 2 o 3 ), 5.4862g lanthanum fluoride (LaF 3 ), 0.7264g lithium fluoride (LiF) and 0.2109g thulium fluoride (TmF 3 ) The powder raw material is placed in an agate mortar for thorough mixing and uniform grinding for 30 minutes; then it is transferred to a corundum crucible and melted in a high-temperature furnace at 1350±20°C for 1 hour. Pour a uniform transparent melt with a certain fluidity into a steel mold preheated at 200±5°C for molding, keep it in a muffle furnace at 520±5°C for 2 hours, and then cool with the furnace to obtain the mother glass; finally, the mother glass is in Heat treatment at 570±1°C for 4h, 6h and 8h respectively to crysta...

Embodiment 2

[0033] According to Tm 3+ Monodoped with LaF 3 Molar ratio composition of nanocrystalline oxyfluorogermanate glass-ceramic 50GeO 2 -20Al 2 o 3 -15LaF 3 -15LiF-xTmF 3 (x=1.00), weigh the ratio (20g) respectively according to the nominal molar composition, put 9.6635g germanium dioxide (GeO 2 ), 3.7679g aluminum oxide (Al 2 o 3 ), 5.4274g lanthanum fluoride (LaF 3 ), 0.7187g lithium fluoride (LiF) and 0.4173g thulium fluoride (TmF 3 ) The powder raw material is placed in an agate mortar for thorough mixing and uniform grinding for 30 minutes; then it is transferred to a corundum crucible and melted in a high-temperature furnace at 1350±20°C for 1 hour. Pour a uniform transparent melt with a certain fluidity into a steel mold preheated at 200±5°C for molding, keep it in a muffle furnace at 520±5°C for 2 hours, and then cool with the furnace to obtain the mother glass; finally, the mother glass is in Heat treatment at 570±1°C for 6 hours to crystallize to form transparen...

Embodiment 3

[0035] According to Tm 3+ Monodoped with LaF 3 Molar ratio composition of nanocrystalline oxyfluorogermanate glass-ceramic 50GeO 2 -20Al 2 o 3 -15LaF 3 -15LiF-xTmF 3 (x=0.25), take proportioning (20g) respectively according to nominal molar composition, put 9.8205g germanium dioxide (GeO 2 ), 3.8291g aluminum oxide (Al 2 o 3 ), 5.5156g lanthanum fluoride (LaF 3 ), 0.7303g lithium fluoride (LiF) and 0.1060g thulium fluoride (TmF 3) The powder raw material is placed in an agate mortar for thorough mixing and uniform grinding for 30 minutes; then it is transferred to a corundum crucible and melted in a high-temperature furnace at 1350±20°C for 1 hour. Pour a uniform transparent melt with a certain fluidity into a steel mold preheated at 200±5°C for molding, keep it in a muffle furnace at 520±5°C for 2 hours, and then cool with the furnace to obtain the mother glass; finally, the mother glass is in Heat treatment at 570±1°C for 6 hours to crystallize to form transparent ...

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Abstract

The invention discloses a Tm<3+> single-doped three-photon infrared quantum cutting microcrystalline glass as well as a preparation method and an application thereof. The microcrystalline glass is formed with LaF3 nanocrystal-containing oxofluorogermanate transparent microcrystalline glass as a matrix and Tm<3+> as activating agent ions, and the composition, in a molar ratio, of the microcrystalline glass is 50GeO2-20Al2O3-15LaF3-15LiF-xTmF3, wherein x is greater than or equal to 0.05 and less than or equal to 1.00. During preparation, GeO2, Al2O3, LaF3, LiF and TmF3 are taken as raw materials, and weighing and proportioning the raw materials according to the nominal composition 50GeO2-20Al2O3-15LaF3-15LiF-xTmF3 in the molar ratio, wherein x is greater than or equal or 0.05 and less than or equal to 1.00, and then taking the method of melt quenching in combination with subsequent heat treatment. The microcrystalline glass is capable of effectively absorbing 455-485nm blue light photons to excite the Tm<3+> ions to the energy state 1G4, and also capable of emitting three infrared photos in succession with 3H4 and 3F4 as intermediate energy states. The quantum efficiency of the Tm<3+> single-doped three-photon infrared quantum cutting microcrystalline glass is calculated within the range from 1.59 to 1.61.

Description

technical field [0001] The invention relates to a kind of oxyfluorogermanate glass ceramics, in particular to a Tm 3+ Single-doped three-photon emission infrared quantum tailoring glass and its preparation method, the material can be applied to design new high-efficiency optoelectronic devices. Background technique [0002] The research and preparation of fluorescent light-emitting materials with quantum efficiency greater than 1 has far-reaching significance, which can effectively reduce energy loss, and has great application prospects in optoelectronic devices such as high-efficiency lighting, display, solid-state lasers, and solar cells (J.Lumin.1974 , 8, 341; J. Lumin. 1974, 8, 344; Science, 1999, 283, 663; Prog. Mater. Sci. 2010, 55, 353). Recently, in rare earth ions for RE 3+ / Yb 3+ In the (RE=Tb, Tm and Pr) co-doped system, infrared quantum tailoring has been reported as a new physical and optical phenomenon, and its main mechanism is: a high-energy ultraviolet or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C10/16
Inventor 张勤远禹德朝张家鹏叶柿张维娟
Owner SOUTH CHINA UNIV OF TECH
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