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Long-afterglow light conversion agent and preparation method thereof, and long-afterglow light conversion film and preparation method thereof

A long afterglow and light-changing agent technology, which is applied in the fields of botany equipment and methods, chemical instruments and methods, luminescent materials, etc., can solve the problems of prolonging the afterglow time, and achieve the effect of promoting and promoting growth

Active Publication Date: 2017-12-01
义乌市转喆科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, it is also required that the doped trivalent rare earth ions have a suitable affinity for the electrons and holes in the trap. The affinity is too strong or too weak to prolong the afterglow time.

Method used

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  • Long-afterglow light conversion agent and preparation method thereof, and long-afterglow light conversion film and preparation method thereof
  • Long-afterglow light conversion agent and preparation method thereof, and long-afterglow light conversion film and preparation method thereof
  • Long-afterglow light conversion agent and preparation method thereof, and long-afterglow light conversion film and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Preparation of long afterglow light conversion agent: using high-purity SrCO 3 、Al 2 o 3 , AlN, Eu 2 o 3 and Dy 2 o 3 As raw material, according to the chemical formula SrAl 2 o 3 N 2 / 3 :0.02Eu 2+ ,0.02Dy 3+ The stoichiometric ratio of each raw material is weighed; then the obtained raw materials are fully ground in an agate mortar and mixed evenly, and the obtained mixture is put into a corundum crucible, and then the corundum crucible and the mixture are put into a high temperature tube furnace Burning, the burning temperature is 1300°C, the burning time is 10 hours, and the sintering atmosphere is a mixture of 5% hydrogen and 95% nitrogen. After the burning is completed, the sample is cooled to room temperature with the furnace, and finally the sintered body is taken out for further processing. The long-lasting light-changing agent can be obtained by ball milling, pulverizing, washing and drying.

[0023] Light conversion film blowing: (1) Weigh 80 parts o...

Embodiment 2

[0031] Preparation of long afterglow light conversion agent: using high-purity SrCO 3 、Al 2 o 3 , AlN, Eu 2 o 3 and Nd 2 o 3 As raw material, according to the chemical formula SrAl 2 o 5 / 2 N:0.03Eu 2+ , 0.03Nd 3+ The stoichiometric ratio of each raw material is weighed; then the obtained raw materials are fully ground in an agate mortar and mixed evenly, and the obtained mixture is put into a corundum crucible, and then the corundum crucible and the mixture are put into a high temperature tube furnace Burning, the burning temperature is 1350°C, the burning time is 9 hours, and the sintering atmosphere is a mixture of 5% hydrogen and 95% nitrogen. After the burning is completed, the sample is cooled to room temperature with the furnace, and finally the sintered body is taken out for further processing. The long-lasting light-changing agent can be obtained by ball milling, pulverizing, washing and drying.

[0032] Light conversion film blowing: (1) Weigh 50 parts of po...

Embodiment 3

[0034] Preparation of long afterglow light conversion agent: using high-purity SrCO 3 、Al 2 o 3 , AlN, Eu 2 o 3 and La 2 o 3 As raw material, according to the chemical formula SrAl 2 o 2 N 4 / 3 :0.02Eu 2+ , 0.02La 3+ The stoichiometric ratio of each raw material is weighed; then the obtained raw materials are fully ground in an agate mortar and mixed evenly, and the obtained mixture is put into a corundum crucible, and then the corundum crucible and the mixture are put into a high temperature tube furnace Burning, the burning temperature is 1400°C, the burning time is 8 hours, and the sintering atmosphere is a mixture of 5% hydrogen and 95% nitrogen. After the burning is completed, the sample is cooled to room temperature with the furnace, and finally the sintered body is taken out for further processing. The long-lasting light-changing agent can be obtained by ball milling, pulverizing, washing and drying.

[0035] Light conversion film blowing: (1) Weigh 75 parts o...

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Abstract

The invention provides a long-afterglow light conversion agent and a preparation method thereof, and a long-afterglow light conversion film and a preparation method thereof, belonging to the fields of light conversion agents and light conversion films. The long-afterglow light conversion agent has a chemical general formula of SrAl<2>O<4-3x / 2>N<x>: Eu<2+>,Re<3+>, wherein Re<3+> is one or a mixture of more than one selected from a rare earth element group consisting of Dy<3+>, Nd<3+>, La<3+>, Ho<3+>, Pr<3+> and Er<3+>, and x is in a range of no less than 2 / 3 and no more than 2. The long-afterglow light conversion agent has the advantages that the long-afterglow light conversion agent can sufficiently absorb violet light and near-ultraviolet light in sunlight; and through creative introduction of N3<-> ions for reconstruction of a crystal field environment around a luminescence center, emission wavelength undergoes redshift to a red-light area.

Description

technical field [0001] The invention belongs to the field of light conversion agents and light conversion films, in particular to a long afterglow light conversion agent and a long afterglow light conversion film. Background technique [0002] Light is an important ecological factor for plant growth and development, and has a major impact on the healthy growth of plants. However, due to the rotation of the earth, our earth has day and night, especially for areas with higher latitudes, the light time of plants is short, which directly leads to slow growth of plants. In order to improve the limitation of this natural condition, we can improve by artificially prolonging the lighting time. Long afterglow material is a very friendly luminescent material, which can absorb sunlight energy during the day, and when the sun goes down and enters the night, it can continue to emit light to promote the growth of plants. Among the many long afterglow materials, the most representative a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K11/64C08L23/06C08L23/12C08L25/06C08L23/08C08L27/06C08K13/02C08K3/22C08K3/28C08K5/3475C08K5/13C08K5/134C08K5/092A01G9/14A01G13/02
CPCA01G9/1438A01G13/0206A01G13/0231A01G13/0275C08J5/18C08J2323/06C08J2323/08C08J2323/12C08J2325/06C08J2327/06C08K3/22C08K3/28C08K5/098C08K5/13C08K5/1345C08K5/3475C08K13/02C08L23/06C08L23/12C08L27/06C08L2203/16C08L2205/02C08L2205/025C09K11/0883C09K11/7792C08K5/092C08L25/06C08L23/0853Y02A40/25
Inventor 楼坚
Owner 义乌市转喆科技有限公司
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