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Carbidonitridosilicate luminescent substances

一种碳氮化硅酸盐、发光物质的技术，应用在无机发光材料领域，能够解决缺乏化合物发光的信息等问题

Inactive Publication Date: 2010-09-01
LEUCHTSTOFFWERK BREITUNGEN GMBH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] Information about the luminescence of such compounds is currently completely lacking in the specialized literature

Method used

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  • Carbidonitridosilicate luminescent substances
  • Carbidonitridosilicate luminescent substances
  • Carbidonitridosilicate luminescent substances

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] For the preparation of terbium- and cerium-activated carbonitride silicates Y 1.00 Si 4 N 6 C:Tb 0.99 Ce 0.01 , the metal terbium was first nitrided in a horizontal tube furnace at 1200 ° C in a pure nitrogen atmosphere for 12 hours to become TbN x (x≈0.99).

[0055] Then, 34.24g of TbNx, 17.78g of metal yttrium, 0.28g of metal cerium, 28.06g of α-Si 3 N 4 The raw material and 8.02 g of SiC were thoroughly mixed in an agate mortar in a dry nitrogen atmosphere and placed in a molybdenum crucible. This powder mixture was fired at 1600°C in pure nitrogen for 10 hours and then cooled to room temperature in an oven. Green-emitting luminescent substances are obtained after removal of unreacted and loose constituents: Composition Y 1.00 Si 4 N 6 C:Tb 0.99 Ce 0.01 .

Embodiment 2

[0057] For the production of synthetic Gd with 5% europium activated carbonitride silicate 1.8 Sr 0.2 Si 4 N 6.2 C 0.8 , the pure metal strontium and metal europium were nitrided in a pure nitrogen atmosphere at 850 °C for 2 hours in a horizontal tube furnace to become the precursor Sr 3 N 2 and EuN. Then, 56.61 g of metal gadolinium, 2.91 g of Sr 3 N 2 , 1.66g of EuN, 29.93g of α-Si 3 N 4 Mix well with 6.42 g of SiC in a dry nitrogen atmosphere and put into a heat-resistant crucible. The firing of the mixture was carried out at 1750°C for 24 hours in a nitrogen-hydrogen atmosphere (90:10). Effective red-emitting luminophores were obtained after appropriate sample reprocessing.

[0058] The drawings are generally clear to those skilled in the art of luminescent substances. A rationale for the illustrated factual situation has been given above. In the following, only some special points will be supplemented.

[0059] from figure 1 It can be seen that Y alone dope...

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Abstract

The invention relates to a luminescent substance consisting of a doped host lattice which absorbs at least one part of exciting radiation whet it is excited by a high-energy exciting radiation, thereby releasing an energy-poor emission radiation. According to said invention the host lattice is embodied in the form of a carbidonitridosilicate-based compound. An illuminant which is used for producing white light and comprises a light emitting element and said luminescent substance are also disclosed.

Description

technical field [0001] The present invention relates to phosphors capable of efficiently absorbing high-energy excitation radiation and efficiently converting it to low-energy emitting radiation. Ultraviolet (UV) radiation or blue light is particularly suitable here as excitation radiation, thus resulting in emission in the green, yellow, orange and / or red range in the visible spectrum in the radiation conversion. Background technique [0002] It has been known for a long time that phosphors can advantageously be used not only for the visualization of invisible radiation images (for example in X-ray diagnostics or display technology) but also for general lighting purposes (for example in fluorescent lamps or with for the production of white light-emitting diodes (LEDs). Such luminescent substances usually have a host lattice, which is doped with special elements. For this purpose, sulfides, halides and oxides are currently mainly used in technical applications as host latt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H05B33/14H01L33/48
CPCC09K11/0883C04B35/597C09K11/7749C04B2235/3229C04B35/584C04B2235/40C09K11/7792C09K11/7721H05B33/14C04B2235/3856C04B2235/3224C04B2235/3225Y02B20/181C09K11/7774Y02B20/00C09K11/77747C09K11/77927C09K11/62C09K11/77
Inventor 德特勒夫·斯塔里克斯文·罗斯勒西尔科·罗斯勒胡贝图斯·特蕾西娅·欣岑李远强
Owner LEUCHTSTOFFWERK BREITUNGEN GMBH
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