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Strontium indium pyrophosphate fluorescent matrix material, fluorescent material as well as preparation and application of strontium indium pyrophosphate fluorescent matrix material

A technology of indium strontium orthopyrophosphate and indium strontium pyrophosphate, which is applied in the field of phosphate matrix materials for rare earth phosphors and its preparation, and can solve the problems of rare exploration of new matrix materials

Active Publication Date: 2021-07-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Recently, most of the research work in the related fields revolves around the doping modification of existing reported compounds, or studies on a series of isomorphic compounds of more mature matrices, while the work of exploring new matrix materials is relatively rare

Method used

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  • Strontium indium pyrophosphate fluorescent matrix material, fluorescent material as well as preparation and application of strontium indium pyrophosphate fluorescent matrix material
  • Strontium indium pyrophosphate fluorescent matrix material, fluorescent material as well as preparation and application of strontium indium pyrophosphate fluorescent matrix material
  • Strontium indium pyrophosphate fluorescent matrix material, fluorescent material as well as preparation and application of strontium indium pyrophosphate fluorescent matrix material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Example 1: Sr 2 In(PO 4 )(P 2 o 7 ) Preparation of phosphor matrix

[0078] Weigh SrCO 3 、In 2 o 3 , NH 4 h 2 PO 4 According to the stoichiometric ratio of elements (Sr, In, P element ratio is 2:1:3), then add nitric acid to dissolve the raw materials, add polyvinyl alcohol solution after the solution is clarified (wherein, polyvinyl alcohol is SrCO 3 2 times the weight), heated and stirred until completely evaporated to dryness, put the beaker in a drying oven to dry and grind it evenly; then carry out two steps of final firing (the first stage sintering temperature is 600 ° C, keep warm for 12 hours and then cool to room temperature with the furnace, Grinding for 10 minutes; the sintering temperature of the second stage is 1150°C, after 24 hours of heat preservation, it is cooled to room temperature with the furnace, the heating rate of the first sintering is 3°C / min, and the heating rate of the second sintering is 5°C / min). Take out the burnt sample and gri...

Embodiment 2

[0089] Example 2: Sr 2 In(PO 4 )(P 2 o 7 ) Preparation of phosphor matrix (final firing temperature 1100°C)

[0090] SrCO 3 、In 2 o 3 , NH 4 h 2 PO 4 The ratio of Sr, In and P is 2:1:3, and the sintering temperature in the second step is 1100°C. The rest of the steps are the same as in Example 1.

Embodiment 3

[0091] Example 3: Sr 2 In(PO 4 )(P 2 o 7 ) Preparation of phosphor matrix (final firing temperature 1200°C)

[0092] SrCO 3 、In 2 o 3 , NH 4 h 2 PO 4 The ratio of Sr, In and P is 2:1:3, the sintering temperature in the second step is 1200°C, and the rest of the steps are the same as in Example 1.

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Abstract

The invention belongs to the field of fluorescent materials, and discloses a strontium indium pyrophosphate fluorescent matrix material with a chemical formula of Sr2In (PO4) (P2O7). The invention also provides a preparation method of the substrate. The method comprises the following steps of: mixing a strontium source, an indium source and a phosphate radical source according to the stoichiometric ratio of the chemical formula to obtain a mixture, and carrying out multi-stage sintering on the mixture to obtain the substrate. Studies find that Sr2In (PO4) (P2O7) is a brand-new compound, and the brand-new compound serving as a matrix material for rare earth fluorescent powder is beneficial for obtaining a fluorescent material with excellent luminescence performance.

Description

Technical field: [0001] The invention relates to the field of rare earth luminescent materials, in particular to a phosphate host material for rare earth fluorescent powder and a preparation method thereof. Background technique: [0002] With the continuous development of lighting energy-saving technology, the protagonist of the traditional lighting market is changing from incandescent lamps to LEDs. In recent years, semiconductor lighting technology represented by white LEDs has developed rapidly, and it is widely used in medical lighting, plant lighting, invisible light applications and health lighting and other fields. Phosphor powder is one of the key materials to realize white LEDs, and its performance plays an important role in the light efficiency and light quality of white light LEDs. Phosphor powder has become an indispensable material in people's daily life. Phosphor powder is usually synthesized by doping an activator in the matrix, and sometimes it is necessary...

Claims

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Application Information

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IPC IPC(8): C09K11/71
CPCC09K11/71C09K11/771C09K11/7778Y02B20/00
Inventor 蔡格梅刘一佳张更鑫张静
Owner CENT SOUTH UNIV
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