Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Intergrowth layered perovskite material with reversible controllability and preparation method

A perovskite material and layered technology, which is applied in the field of symbiotic layered perovskite materials and preparation, can solve the problems that the performance of inorganic photochromic materials is not ideal and limits the practical application of materials, etc., and achieve the effect of good reversible performance

Active Publication Date: 2022-05-10
CIVIL AVIATION UNIV OF CHINA
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, the research on photochromic materials mainly focused on organic substances, and the research on inorganic photochromic materials was relatively less, and the performance of inorganic photochromic materials was not ideal, which limited the practical application of such materials, which requires Researchers develop new inorganic photochromic materials

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
  • Intergrowth layered perovskite material with reversible controllability and preparation method
  • Intergrowth layered perovskite material with reversible controllability and preparation method
  • Intergrowth layered perovskite material with reversible controllability and preparation method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Preparation of SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ceramic material, wherein x=0, the preparation method is as follows:

[0034] Weigh 0.4474 g of SrCO 3 , 5.6720 g Bi 2 o 3 , 0.1183 g Yb 2 o 3 , 1.6942 g TiO 2 Place in a clean agate jar, use absolute ethanol (99.7%) as a medium, and ball mill on a planetary ball mill for 24 hours. The ball-milled product is dried in an oven to obtain a dried powder. Grind the dried powder with an agate mortar, then place it in a corundum crucible, put it into a box furnace, and heat it up to 1100°C for 5 hours for pre-burning, and then stop the program after cooling down to 550°C. The product obtained after cooling with the furnace was ground with an agate mortar, pressed into a disc with a diameter of 13mm by a tablet press, then covered with alumina powder, placed on an alumina plate and sintered at 1200°C in air for 1.5 hours, and finally obtained Flake SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ceramic material.

Embodiment 2

[0036] Preparation of SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ceramic material, wherein x=0.01, the preparation method is as follows:

[0037] Weigh 0.4474 g of SrCO 3 , 5.6647 g Bi 2 o 3 , 0.0057 grams Er 2 o 3 , 0.1183 g Yb 2 o 3 , 1.6942 g TiO 2 Place in a clean agate jar, use absolute ethanol (99.7%) as a medium, and ball mill on a planetary ball mill for 24 hours. The ball-milled product is dried in an oven to obtain a dried powder. Grind the dried powder with an agate mortar, then place it in a corundum crucible, put it into a box furnace, and heat it up to 1100°C for 5 hours for pre-burning, and then stop the program after cooling down to 550°C. The product obtained after cooling with the furnace was ground with an agate mortar, pressed into a disc with a diameter of 13mm by a tablet press, then covered with alumina powder, placed on an alumina plate and calcined at 1200°C in air for 90 minutes, and finally Obtaining flake SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ce...

Embodiment 3

[0039] Preparation of SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ceramic material, wherein x=0.05, the preparation method is as follows:

[0040] Weigh 0.4474 g of SrCO 3 , 5.6356 g Bi 2 o 3 , 0.0287 grams Er 2 o 3 , 0.1183 g Yb 2 o 3 , 1.6942 g TiO 2 Place in a clean agate jar, use absolute ethanol (99.7%) as a medium, and ball mill on a planetary ball mill for 24 hours. The ball-milled product is dried in an oven to obtain a dried powder. Grind the dried powder with an agate mortar, then place it in a corundum crucible, put it into a box furnace, and heat it up to 1100°C for 5 hours for pre-burning, and then stop the program after cooling down to 550°C. The product obtained after cooling with the furnace was ground with an agate mortar, pressed into a disc with a diameter of 13mm by a tablet press, then covered with alumina powder, placed on an alumina plate and calcined at 1200°C in air for 90 minutes, and finally Obtaining flake SrBi 7.8-x Er x Yb 0.2 Ti 7 o 27 Ce...

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

A symbiotic layered perovskite material with reversible regulation performance and a preparation method. The chemical formula of the material is SrBi 7.8‑ x Er x Yb 0.2 Ti 7 O 27 , where x=0, 0.01, 0.05, 0.1 or 0.15. The preparation method is based on Bi 2 O 3 , SrCO 3 , Er 2 O 3 , Yb 2 O 3 and TiO 2 As a raw material, it is mixed and ground according to the chemical ratio, and synthesized by a high-temperature solid-phase reaction method. Advantages of the present invention: SrBi 7.8‑ x Er x Yb 0.2 Ti 7 O 27 The ceramic material has obvious discoloration effect under near-ultraviolet light (405nm) irradiation, and the color of the material changes from light yellow to gray-black. At the same time, the ceramic material has up-conversion luminescence excited by near-infrared light (980 nm), and the up-conversion luminescence intensity of the material is reversibly regulated under the excitation of near-ultraviolet light (405 nm) and thermal annealing, and the response is fast and repeatable. SrBi 7.8‑ x Er x Yb 0.2 Ti 7 O 27 Materials can be used in optical switches, optical storage, security and anti-counterfeiting in the future.

Description

technical field [0001] The invention belongs to the technical field of light regulation materials, and in particular relates to a symbiotic layered perovskite material with reversible regulation performance and a preparation method. Background technique [0002] Effective regulation of the physical and chemical properties of materials is of great significance for the development of high-efficiency electronic components. Photochromism refers to a phenomenon in which a material can change color after being excited by a specific light source. In the past, the research on photochromic materials mainly focused on organic substances, and the research on inorganic photochromic materials was relatively less, and the performance of inorganic photochromic materials was not ideal, which limited the practical application of such materials, which requires Researchers develop new inorganic photochromic materials. [0003] Upconversion luminescence is the process of radiating a high-ener...

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): C04B35/475C04B35/50C04B35/622C09K9/00
CPCC04B35/475C04B35/50C04B35/622C09K9/00C04B2235/3213C04B2235/3224C04B2235/3232C04B2235/3298C04B2235/602C04B2235/656C04B2235/6567C04B2235/6583
Inventor 魏通申灵慧石永超
Owner CIVIL AVIATION UNIV OF CHINA
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com