Unlock instant, AI-driven research and patent intelligence for your innovation.

An upconversion glass-ceramic composite material of selectively rare earth-doped scandium-based fluoride nanocrystals

A technology based on fluorinated nanometer and glass ceramics, which is applied in glass furnace equipment, glass manufacturing equipment, manufacturing tools and other directions, can solve problems such as mismatch and difficult doping, and achieve the effects of low cost and simple preparation process.

Active Publication Date: 2022-01-04
HANGZHOU DIANZI UNIV
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

sc 3+ As a rare earth element, it has a unique electronic configuration and a smaller ionic radius, so it may have different luminescent properties compared with traditional rare earth up-conversion materials, but it is difficult to achieve due to its large mismatch with traditional rare earth ion radii. Rarely studied

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • An upconversion glass-ceramic composite material of selectively rare earth-doped scandium-based fluoride nanocrystals
  • An upconversion glass-ceramic composite material of selectively rare earth-doped scandium-based fluoride nanocrystals
  • An upconversion glass-ceramic composite material of selectively rare earth-doped scandium-based fluoride nanocrystals

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0024] The preparation method of the above-mentioned glass-ceramics, the method is prepared by adopting the traditional melting quenching method and subsequent crystallization heat treatment, and the specific preparation process is as follows:

[0025] The powder raw material SiO 2 、Al 2 o 3 、K 2 CO 3 , KF, LnF 3 、ScF 3 , LnF 3 (Ln=Y, Yb, Lu) and ErF 3 Weigh the compound according to molar percentage, grind it evenly in an agate mortar, put it in a crucible, heat it in a resistance furnace to 1350-1550°C and keep it warm for 0.5-1 hour, then quickly pour the molten glass into 400-500°C for preheating Shaped in a copper mold; the annealed glass is heated and kept at 600-800°C for 2 hours to make it crystallize, and the KSc-containing 2 f 7 Nanocrystalline transparent glass-ceramic composites.

Embodiment 1

[0026] Embodiment 1: SiO 2 、Al 2 o 3 、K 2 CO 3 , KF, ScF 3 , YbF 3 and ErF 3 According to 44.4SiO 2 :6Al 2 o 3 :9K 2 CO 3:18.8KF:20ScF 3 :1.6YbF 3 :0.2ErF 3 The ratio (molar ratio) is accurately weighed, ground evenly in an agate mortar, placed in a crucible, heated to 1500°C in a resistance furnace for 30 minutes, and then quickly poured the molten glass into a preheated 400°C Forming in a copper mold; the annealed glass continues to be heated at 750°C for 2 hours to crystallize it to obtain Yb 3+ / Er 3+ Doped KSc 2 f 7 Embedded transparent glass-ceramic composite.

[0027] The X-ray diffraction pattern shows that the precursor glass is a typical amorphous structure, and the orthorhombic structure KSc is precipitated in the aluminosilicate glass substrate after heat treatment 2 f 7 crystal phase ( figure 1 ), the transmission electron microscope observation shows that there are a large number of KSc with a size of about 40-50nm uniformly distributed in th...

Embodiment 2

[0028] Embodiment 2: SiO 2 、Al 2 o 3 、K 2 CO 3 , KF, ScF 3 , YbF 3 and ErF 3 According to 38SiO 2 :6Al 2 o 3 :9K 2 CO 3 :18.8KF:16ScF 3 :12YbF 3 :0.2ErF 3 The ratio (molar ratio) is accurately weighed, ground evenly in an agate mortar, placed in a crucible, heated to 1500°C in a resistance furnace for 30 minutes, and then quickly poured the molten glass into a preheated 400°C Forming in a copper mold; the annealed glass continues to be heated at 750 ° C for 2 hours to make it crystallize, and Er 3+ Doped with orthorhombic structure KYb 2 f 7 and the orthogonal structure KSc 2 f 7 A transparent glass-ceramic composite of dual-phase nanocrystals, the sample emits bright red light under excitation at 980nm.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an up-conversion glass-ceramic composite material with selective rare earth doping scandium-based fluoride nanocrystals. Glass-ceramic as SiO 2 :66‑x‑y mol%; Al 2 o 3 : 6mol%; K 2 CO 3 :9mol%; KF:18.8mol%; ScF 3 :x mol%; LnF 3 :y mol%; ErF 3 :0.2%; 16≤x≤20; when 1.6≤y<6, KSc is embedded in the glass matrix 2 f 7 Nanocrystalline, KSc 2 f 7 Nanocrystalline doped Ln 3+ / Er 3+ ; When 6≤y≤12, KSc is embedded in the glass matrix 2 f 7 and KLn 2 f 7 Nanocrystalline, nanocrystalline doped with Er 3+ . The present invention successfully obtains a homogeneously distributed orthogonal KSc in the aluminosilicate glass matrix 2 f 7 nanocrystals, and at the same time realize the entry of rare earth ions into the crystal phase.

Description

technical field [0001] The invention relates to the field of solid luminescent materials, in particular to a rare earth-doped up-conversion luminescent glass-ceramic composite material. Background technique [0002] In recent years, lanthanide-doped upconversion materials have broad application prospects in the field of optoelectronics (such as anti-counterfeiting, display, bioimaging, etc.), among which rare earth fluorides are characterized by their inherent low phonon energy, high chemical stability and easy with Ln 3+ Dopant combination and other advantages have been widely used in various matrix materials. Currently, with Er 3+ and Tm 3+ is the luminous center, Yb 3+ Hexagonal NaReF doped as a sensitizer 4 (Re=Y, Gd, Lu) is considered to be the most efficient green and blue upconversion material. sc 3+ As a rare earth element, it has a unique electronic configuration and a smaller ionic radius, so it may have different luminescent properties compared with traditi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C03C10/16C03C4/12C03C6/06C03B5/16C03B32/02
CPCC03C10/16C03C10/0018C03C4/12C03C1/00C03B5/16C03B32/02
Inventor 彭永昭柳月陈大钦钟家松李心悦
Owner HANGZHOU DIANZI UNIV