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Method for preparing ternary sulfide and quaternary sulfur oxide phosphor powder

A phosphor and red phosphor technology, applied in chemical instruments and methods, luminescent materials, photovoltaic power generation, etc., can solve the problems of unfavorable production, environmental protection, cumbersome operation steps, etc., and achieve the effect of short reaction time and simple operation

Active Publication Date: 2013-02-13
长沙西维尔科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above synthesis method is not only cumbersome to operate, but also requires the use of toxic gas H 2 S or CS 2 , not conducive to actual production and environmental protection

Method used

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  • Method for preparing ternary sulfide and quaternary sulfur oxide phosphor powder
  • Method for preparing ternary sulfide and quaternary sulfur oxide phosphor powder
  • Method for preparing ternary sulfide and quaternary sulfur oxide phosphor powder

Examples

Experimental program
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Effect test

example 1

[0043] Example 1: Ba 2 ZnS 3 Synthesis

[0044] Ingredients: Accurately weigh BaSO according to stoichiometric ratio 4 1.8671g, ZnO 0.6511g, carbon powder 0.2402g, then fully ground in a mortar and set aside.

[0045] Synthesis: The synthesis method adopts the traditional high-temperature solid-phase method. Put the uniformly ground raw materials in the batching process into the crucible, place the crucible in a tube furnace, calcinate at 1000°C for 2.5 hours in a nitrogen atmosphere, and cool naturally to room temperature to obtain the desired phosphor.

example 2

[0046] Example 2: Ba 1.99 Zn 0.99 S 3 :1.0%Eu 2+ , 1.0% Mn 2+ Synthesis

[0047] Ingredients: (1) Accurately weigh BaSO according to the stoichiometric ratio 4 4.6445g, carbon powder 0.6002g, placed in an evaporating dish, mixed; (2) Accurately pipette 2.0ml of EuCl with a concentration of 0.05mol / L according to the stoichiometric ratio 3 solution and 0.5ml of MnCl with a concentration of 0.2mol / L 2 solution, added to the mixture in the evaporating dish in step (1), and stirred evenly with a glass rod; (3) the raw material mixture was placed in an oven to dry, and after drying, ZnS 0.9745g was accurately weighed in molar ratio, and then Grind thoroughly in a bowl and set aside.

[0048] Synthesis: The synthesis method adopts the traditional high-temperature solid-phase method. Put the uniformly ground raw materials in the batching process into the crucible, place the crucible in a tube furnace, calcinate at 1000°C for 3 hours in a nitrogen atmosphere, and cool naturall...

example 3

[0049] Example 3: Ba 1.396 Sr 0.6 ZnS 3 :0.4%Eu 2+ Synthesis

[0050] Ingredients: (1) Accurately weigh BaSO according to the stoichiometric ratio 4 3.2581g, carbon powder 0.5993g, SrSO 4 1.1021g was placed in an evaporating dish and mixed. (2) Use a pipette to accurately pipette 4.0ml of EuCl with a concentration of 0.01mol / L according to the stoichiometric ratio 3 Add the solution to the mixture in the evaporating dish in step (1), and stir evenly with a glass rod. (3) Dry the raw material mixture in an oven, accurately weigh 0.9745 g of ZnS according to the molar ratio after drying, and then fully grind it in a mortar for use.

[0051] Synthesis: The synthesis method adopts the traditional high-temperature solid-phase method. Put the uniformly ground raw materials in the batching process into the crucible, place the crucible in a tube furnace, calcinate at 950°C for 4 hours in a nitrogen atmosphere, and cool naturally to room temperature , to obtain the desired ph...

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Abstract

The invention relates to a research about two novel red kinds of phosphor powder and a synthetic method thereof. The luminescent material uses quaternary sulfur oxide and ternary sulfide as substrates and uses rare earth ions or transition metal ions as an activator, and the general formula is as follows: (Ba1-m-n-kSrmCanMgk) 2ZnS3: xRE, yM (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05) and Ba1-m-n-kSrmCanMgkZnOS: xRE, yM, (0<=m<=1.0, 0<=n<=1.0, 0<=k<=1.0, 0<=m+n+k<=1.0, 0<=x<=0.05, 0<=y<=0.05), wherein RE is one or two of Y3+, la3+, Ce3+, Pr3+, Nd3+, Sm3+, Gd3+, Tb3+, Dy3+, Ho3+, Er3+, Tm3+, Yb3+ and Lu3+; and M is one or two of Mn2+, Cu2+, Cu+, Pb2+ and Bi3+. The synthetic method comprises the following steps of accurately weighing BaSO4, carbon powder and ZnS or ZnO according to chemometry, putting the fully-mixed raw materials into a crucible, calcining for 2-4 hours at 900-1000 DEG C under nitrogen or argon atmosphere, and naturally cooling to room temperature. The method for synthesizing quaternary sulfur oxide and ternary sulfide in one step with carbon thermal reduction has the advantages of simple operation, time saving, environment pollution avoidance and the like.

Description

technical field [0001] The invention belongs to the field of luminescent materials, and is a kind of (Ba 1-m-n-k Sr m Ca n Mg k ) 2 ZnS 3 and Ba 1-m-n-k Sr m Ca n Mg k Phosphor powder with ZnOS as matrix and rare earth ions and transition metal ions as activators, its synthesis method and application method. Background technique [0002] Compound Ba 2 ZnS 3 And BaZnOS has good chemical stability and thermal stability, and is a suitable matrix for phosphors. Currently, the reported Ba 2 ZnS 3 The base phosphor has Ba 2 ZnS 3 :Eu 2+ , Ce 3+ , BaZnOS-based phosphors include BaZnOS:Mn 2+ and BaZnOS:Cu 2+ Wait. These two types of host phosphors show promising applications in white LEDs and solar energy conversion. [0003] Either synthetic Ba 2 ZnS 3 Or BaZnOS phosphor, the reported synthesis method is a two-step method: first, using H 2 S or CS 2 Gas reduction BaSO 4 or BaCO 3 Prepare BaS; then, use BaS and ZnO high-temperature solid-state reaction to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/56H01L33/50H01L31/055C08K3/30
CPCY02E10/50Y02B20/181Y02B20/00Y02E10/52
Inventor 廉世勋葛勇杰靳春艳陈丽虹杨爽黄烈兰周萌
Owner 长沙西维尔科技有限公司
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