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

A kind of preparation method of borate fluorescent powder matrix and fluorescent powder

A borate and phosphor technology, applied in the field of phosphor materials, can solve the problems of not being effectively utilized, restricting the efficiency of single-crystal silicon solar cells, etc., and achieve the effects of low cost and simple preparation method

Active Publication Date: 2016-09-28
杨鹏
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Under solar illumination, the main response spectrum of single-junction solar cells is in the visible light region, and neither the visible light nor the infrared part has been effectively utilized, thus restricting the improvement of the efficiency of single-crystal silicon solar cells.

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
  • A kind of preparation method of borate fluorescent powder matrix and fluorescent powder
  • A kind of preparation method of borate fluorescent powder matrix and fluorescent powder
  • A kind of preparation method of borate fluorescent powder matrix and fluorescent powder

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] NaBa 0.9 BO 3 :0.05Eu 3+ , 0.05K + Phosphor powder

[0033] Take chemically pure or analytically pure sodium carbonate NaCO 3 , barium carbonate BaCO 3 , boric acid H 3 BO 3 , potassium carbonate K 2 CO 3 and europium oxide Eu 2 o 3 The raw materials are prepared according to the chemical formula ratio, and the ratio of raw materials is shown in the table

[0034]

[0035] Accurately weigh the above raw materials, fully grind them evenly in an agate crucible for 20 minutes, mix them evenly and put them into a ceramic crucible.

[0036] Put the sample into the muffle furnace according to the set procedure, first rise from room temperature to 400°C for 60 minutes after 70 minutes, and then rise to 850°C for 3 hours after 90 minutes. After the calcination program is over, cool the sample to room temperature with the furnace and take it out .

[0037] After taking it out, grind it into powder with an agate crucible to get NaBa 0.9 BO 3 :0.05Eu 3+ , 0.05K ...

Embodiment 2

[0040] NaBa 0.9 BO 3 :0.05Tm 3+ , 0.05 Li + Phosphor powder

[0041] Take chemically pure or analytically pure sodium carbonate NaCO 3 , barium carbonate BaCO 3 , boric acid H 3 BO 3 and thulium oxide Tm 2 o 3 The raw materials are prepared according to the chemical formula ratio, and the ratio of raw materials is shown in the table

[0042]

[0043] Accurately weigh the above raw materials, fully grind them in an agate crucible for 20 minutes, mix them evenly and put them into a ceramic crucible.

[0044] Put the sample into the muffle furnace according to the set procedure, first rise from room temperature to 400°C for 60 minutes after 70 minutes, and then rise to 850°C for 3 hours after 90 minutes. After the calcination program is over, cool the sample to room temperature with the furnace and take it out .

[0045] After taking it out, grind it into powder with an agate crucible to get NaBa 0.9 BO 3 :0.05Tm 3+ , 0.05 Li + phosphor material.

[0046] The e...

Embodiment 3

[0048] NaBaBO 3 :0.05Tb 3+ , 0.05Li + Phosphor powder

[0049] Take chemically pure or analytically pure sodium carbonate NaCO 3 , barium carbonate BaCO 3 , boric acid H 3 BO 3 and terbium oxide 4 o 7 The raw materials are prepared according to the chemical formula ratio, and the ratio of raw materials is shown in the table

[0050]

[0051] Accurately weigh the above raw materials, fully grind them in an agate crucible for 20 minutes, mix them evenly and put them into a ceramic crucible.

[0052] Put the sample into the muffle furnace according to the set procedure, first rise from room temperature to 400°C for 60 minutes after 70 minutes, and then rise to 850°C for 3 hours after 90 minutes. After the calcination program is over, cool the sample to room temperature with the furnace and take it out .

[0053] After taking it out, grind it into powder with an agate crucible to get NaBaBO 3 :0.05Tb 3+ , 0.05Li + phosphor material.

[0054] The excitation and emi...

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 a near-ultraviolet excitation rare earth borate fluorescent powder matrix and a preparation method of the fluorescent powder. The general formula of the borate fluorescent powder is NaBaBO 3 : xRe, yM (that is, BaNaBO 3 : xRe, yM). Among them, NaBaBO 3 (i.e. BaNaBO 3 ) borate is the luminescent host, Re is the doped rare earth luminescent center, and M is the auxiliary doping element. The preparation process of the fluorescent powder of the invention is simple, and by doping different rare earth elements in the matrix, fluorescent materials with strong emission in various spectral regions under near-ultraviolet excitation can be obtained. The preparation method of the invention is simple, easy to operate, pollution-free and low in cost. It can be applied in violet laser trichromatic white LED phosphor, down-conversion solar cell phosphor and various display devices, and can also be used as a down-conversion fluorescent material excited by near-purple light for an agricultural film that promotes the growth of crops.

Description

technical field [0001] The invention belongs to the field of fluorescent powder materials, in particular to a borate fluorescent powder substrate and a method for preparing fluorescent powder using the substrate. It belongs to the key auxiliary material of white light LED, crystalline silicon solar cell down-conversion material preparation technology and fluorescent agricultural film. Background technique [0002] White LED is called a new generation of solid-state lighting because of its energy saving, high efficiency, long life and environmental protection. It has attracted much attention and quickly entered the fields of night scene lighting, indoor lighting, automobiles, and personal communication equipment. This new type of green light source must be a new generation of lighting source, which has extensive and far-reaching significance for energy saving, environmental protection, and providing people's quality of life. [0003] At present, there are three main methods ...

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): C09K11/63
Inventor 陈朝郑将辉蔡丽晗应莉莉陈文志陈蓉范宝殿
Owner 杨鹏