Rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray

A technology of luminescent materials and diodes, which is applied in luminescent materials, electrical components, electric solid devices, etc., can solve the problems of high cost of white LEDs, difficulty in circuit control, and difficulty in obtaining phosphor powder, etc., and achieve high luminous efficiency, low cost, small size effect

Inactive Publication Date: 2006-02-08
CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In order to solve the problems of high cost of white light LEDs in the above background technology, difficulty in circuit control, large volume, low luminous efficiency, and difficulty in obtaining phosphor powders that absorb purple light and convert white light, the purp

Method used

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  • Rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Embodiment 1 is selected as: Y 2 o 3 (4N) 18.587%

[0017] Eu 2 o 3 (4N) 0.906%

[0018] S (high purity) 40.25%

[0019] NaCO 3 (AR) 40.257%

[0020] After mixing and grinding the above materials, put Al 2 o 3 Or in a quartz crucible, sinter at a high temperature of 1100°C or 1200°C or 1300°C or 1350°C in a sulfur-containing atmosphere for 1 hour or 1.5 hours or 2 hours or 2.5 hours or 3 hours (or the temperature and time within the above range All belong to the protection content of the present invention), take out the powder after cooling, select the powder, post-processing, both obtain the material that emits red light.

Embodiment 2

[0021] Embodiment 2 is selected as: Gd 2 o 3 (4N) 19.822%

[0022] Eu 2 o 3 (4N) 0.892%

[0023] S (high purity) 39.643%

[0024] NaCO 3 (AR) 39.643%

[0025] Sintering method step is the same as embodiment 1.

Embodiment 3

[0026] Embodiment 3 is selected as: La 2 o 3 (4N) 18.587%

[0027] Eu 2 o 3 (4N) 0.906%

[0028] S (high purity) 40.254%

[0029] NaCO 3 (AR) 40.253%

[0030] Sintering method step is the same as embodiment 1.

[0031] (2) The second part chemical formula (2) of the present invention takes M 3-x-y (PO 4 ) 2 ·(SrCl 2 ·6H 2 O) x :Eu y 2+ The components are prepared according to the structural formula and the blue light-emitting material, and the reagent materials are weighed according to the following measurements:

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Abstract

The invention relates to a rare earth three primary colours luminescent material transferring violet ray of violet ray diode to white ray, which is prepared from three compounds having a formula (1): R2-x-yO2S:EuxNy, formula (2): M3-x-y(PO4)2*(SrCl2*6H2O)x:Euy2+, formula (3): M1-x-yAl16O27*nB2O3:Eux2+.Mny2+ through the steps of weighing, mixing, grinding, high temperature sintering, cooling down, disintegrating, sieving, post-treating, obtaining red, blue and green rare earth luminescent materials, mixing them by the weight proportion of 30-50%, 5-20% and 20-65%, finally irradiating with purple light diode.

Description

Technical field: [0001] The invention belongs to the field of luminescence and display, and relates to a novel rare-earth luminescent material for converting violet light diodes into white light. Background technique: [0002] In recent years, there have been a lot of reports about purple light exciting three primary toners to make white light diodes: the applicant's patent CN00104438.9 "White Light Emitting Materials for Light-Emitting Diodes" and application 01140515.5 "Using Purple Light Diodes to Convert Light-Emitting Materials into White Light Emitting Materials" Method" earlier reported the work of using red, green and blue three-primary toners of different components to match purple light to emit white light. [0003] Great progress has been made in the research of GaN blue light (emission peak is 460nm---470nm) LED white light phosphor. But its luminous efficiency is low, GaN violet light emitting from 390nm---405nm is the focus of current research, but phosphors t...

Claims

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Application Information

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IPC IPC(8): C09K11/81H01L51/30H01L33/00H01L33/50
Inventor 赵成久蒋大鹏侯凤勤刘学彦
Owner CHANGCHUN INST OF OPTICS FINE MECHANICS & PHYSICS CHINESE ACAD OF SCI
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