DE20218718U1 - Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium - Google Patents
Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium Download PDFInfo
- Publication number
- DE20218718U1 DE20218718U1 DE20218718U DE20218718U DE20218718U1 DE 20218718 U1 DE20218718 U1 DE 20218718U1 DE 20218718 U DE20218718 U DE 20218718U DE 20218718 U DE20218718 U DE 20218718U DE 20218718 U1 DE20218718 U1 DE 20218718U1
- Authority
- DE
- Germany
- Prior art keywords
- led
- phosphor
- alkaline earth
- europium
- range
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 12
- 229910052693 Europium Inorganic materials 0.000 title claims abstract description 8
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 238000004020 luminiscence type Methods 0.000 title claims abstract description 7
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 6
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 5
- 230000005855 radiation Effects 0.000 claims description 13
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 11
- 229910052784 alkaline earth metal Inorganic materials 0.000 claims description 3
- 150000001342 alkaline earth metals Chemical group 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims 1
- 150000004760 silicates Chemical class 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 239000000049 pigment Substances 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 238000000695 excitation spectrum Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 238000001228 spectrum Methods 0.000 description 2
- 229910002012 Aerosil® Inorganic materials 0.000 description 1
- 206010001497 Agitation Diseases 0.000 description 1
- LCGLNKUTAGEVQW-UHFFFAOYSA-N Dimethyl ether Chemical compound COC LCGLNKUTAGEVQW-UHFFFAOYSA-N 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 150000001768 cations Chemical class 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
- C09K11/08—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials
- C09K11/77—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals
- C09K11/7728—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing rare earth metals containing europium
- C09K11/77342—Silicates
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/4805—Shape
- H01L2224/4809—Loop shape
- H01L2224/48091—Arched
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/01—Means for bonding being attached to, or being formed on, the surface to be connected, e.g. chip-to-package, die-attach, "first-level" interconnects; Manufacturing methods related thereto
- H01L2224/42—Wire connectors; Manufacturing methods related thereto
- H01L2224/47—Structure, shape, material or disposition of the wire connectors after the connecting process
- H01L2224/48—Structure, shape, material or disposition of the wire connectors after the connecting process of an individual wire connector
- H01L2224/481—Disposition
- H01L2224/48151—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive
- H01L2224/48221—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked
- H01L2224/48245—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic
- H01L2224/48247—Connecting between a semiconductor or solid-state body and an item not being a semiconductor or solid-state body, e.g. chip-to-substrate, chip-to-passive the body and the item being stacked the item being metallic connecting the wire to a bond pad of the item
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2224/00—Indexing scheme for arrangements for connecting or disconnecting semiconductor or solid-state bodies and methods related thereto as covered by H01L24/00
- H01L2224/73—Means for bonding being of different types provided for in two or more of groups H01L2224/10, H01L2224/18, H01L2224/26, H01L2224/34, H01L2224/42, H01L2224/50, H01L2224/63, H01L2224/71
- H01L2224/732—Location after the connecting process
- H01L2224/73251—Location after the connecting process on different surfaces
- H01L2224/73265—Layer and wire connectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/15—Details of package parts other than the semiconductor or other solid state devices to be connected
- H01L2924/181—Encapsulation
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
Landscapes
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Luminescent Compositions (AREA)
Abstract
Description
Technisches Gebiettechnical area
Die Erfindung geht aus von einem Leuchtstoff für Lumineszenzkonversions-LED gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei insbesondere um Thiosilikate, die mit Europium dotiert sind. es handelt sich dabei um Leuchtstoffe, die mit Primärstrahlung aus dem Blauen oder UV-Strahlungsbereich angeregt werden können. ein weiterer Gegenstand der Erfindung ist eine Beleuchtungseinheit auf LED-Basis mit einem entsprechenden Leuchtstoff.The invention is based on one Fluorescent for Luminescence conversion LED according to the generic term of claim 1. These are in particular thiosilicates, that are endowed with Europium. these are phosphors, those with primary radiation can be excited from the blue or UV radiation range. on Another object of the invention is a lighting unit LED base with a corresponding phosphor.
Stand der TechnikState of technology
Aus der WO 02/11173 ist bereits eine Leuchtstoff für Lumineszenzkonversions-LED bekannt, der auf komplexen Thiometallaten basiert, die mit Europium dotiert sein können. die Palette der damit erreichbaren Leuchtstoffe reicht für eine vollständige Abdeckung der gewünschten Farborte nicht aus. Zudem weisen einige dieser Thiometallate zwar spektral günstige Eigenschaften auf, zeigen aber beim Betrieb in der LED und/oder bei der Herstellung chemische Stabilitätsprobleme, die die Produktlebensdauer, Effizienz oder Farbort-Konstanz gefährden.WO 02/11173 already has one Fluorescent for Luminescence conversion LED known on complex thiometalates based, which can be endowed with Europium. the range of it Attainable phosphors are sufficient for complete coverage the desired one Color locations not out. In addition, some of these thiometalates do indeed spectrally favorable Properties, but show when operating in the LED and / or at manufacturing chemical stability issues that affect product life, Endanger efficiency or constant color location.
Darstellung der Erfindungpresentation the invention
Es ist Aufgabe der vorliegenden Erfindung, einen Leuchtstoff für Lumineszenzkonversion bei einer LED gemäß dem Oberbegriff des Anspruchs 1 sowie eine zugehörige LED bereitzustellen, die eine gute Farbwiedergabe ermöglichen und speziellen Anforderungen an das Anregungs- und Emissionsverhalten genügen.It is an object of the present invention a phosphor for Luminescence conversion in an LED according to the preamble of the claim 1 and an associated one To provide LEDs that enable good color rendering and special requirements for excitation and emission behavior suffice.
Diese Aufgabe wird durch die kennzeichnenden Merkmale des Anspruchs 1 gelöst. Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.This task is characterized by the Features of claim 1 solved. Particularly advantageous refinements can be found in the dependent claims.
Eine weitere Aufgabe ist die Bereitstellung einer entsprechenden Beleuchtungseinheit.Another task is the provision a corresponding lighting unit.
Erfindungsgemäß handelt es sich bei den Leuchtstoffen um Erdalkali-Thiosilikate, die mit Eu dotiert sind. Sie gewährleisten eine gute Anregung bei Wellenlängen um 400 nm und eine Emission im blaugrünen Bereich um 550 nm. Sie genügen der Formel EA2–xSiS4:EuX. Dabei ist EA ein oder mehrere Erdalkalimetalle, ausgewählt aus der Gruppe Sr, Mg, Ca. Bevorzugt wird Sr alleine oder mit geringen Beimengungen (bis 40 mol-%) an Mg und/oder Ca verwendet. Der Anteil des Eu liegt bevorzugt im Bereich x = 0,005 bis 0,05.According to the invention, the phosphors are alkaline earth thiosilicates which are doped with Eu. They ensure good excitation at wavelengths around 400 nm and emission in the blue-green range around 550 nm. They satisfy the formula EA 2-x SiS 4 : Eu X. EA is one or more alkaline earth metals, selected from the group Sr, Mg, Ca. Sr is preferably used alone or with small additions (up to 40 mol%) of Mg and / or Ca. The proportion of the Eu is preferably in the range x = 0.005 to 0.05.
Besonders bevorzugt ist eine Verbindung
(SraCabMgc)2–xSiS4:EuX mit
0,6 ≤ a ≤ 1;
0 ≤ b ≤ 0,2;
0,03 ≤ c ≤ 0,4.A compound (Sr a Ca b Mg c ) 2-x SiS 4 : Eu X with is particularly preferred
0.6 ≤ a ≤ 1;
0 ≤ b ≤ 0.2;
0.03 ≤ c ≤ 0.4.
Derartige Verbindungen zeigen besonders gute und effiziente Anregbarkeit bei Wellenlängen zwischen 380 und 460 nm sowie effiziente breitbandige grüne Photolumineszenz mit einem Maximum bei etwa 550 nm.Such connections show particularly good and efficient excitability at wavelengths between 380 and 460 nm as well as efficient broadband green Photoluminescence with a maximum at around 550 nm.
Bevorzugter Bereich der Anregung ist 380 bis 460 nm, der Emissionbereich liegt insbesondere bei etwa 545 bis 560 nm.Preferred area of excitation is 380 to 460 nm, the emission range is in particular around 545 to 560 nm.
Kurze Beschreibung der ZeichnungenShort description of the drawings
Im folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Es zeigen:The following is intended to illustrate the invention several embodiments are explained in more detail. Show it:
Bevorzugte Ausführung der Erfindungpreferred execution the invention
Für
den Einsatz in einer weißen
LED zusammen mit einem GaInN-Chip wird beispielsweise ein Aufbau ähnlich wie
in
In
Einige Leuchtstoffe des Thiosilikat-Typs sind in Tab. 1 zusammengefasst. Es handelt sich überwiegend um Sr-Thiosilikate des Typs (SrEA)2–xSiS4, wobei ein Anteil x des Kations Sr, der zwischen 0,5 und 4 mol-% liegt, durch Eu ersetzt ist. Typische Quanteneffizienzen dieser Leuchtstoffe liegen bei mehr als 50 %, wobei sich die Peakemission von 545 nm bei geringer Eu-Dotierung zu etwa 560 nm bei hoher Eu-Dotierung verschiebt.Some thiosilicate type phosphors are summarized in Tab. 1. Most of them are Sr thiosilicates of type (SrEA) 2 – xSiS4, where a fraction x of the cation Sr which is between 0.5 and 4 mol%, is replaced by Eu. Typical quantum efficiencies of these phosphors are more than 50%, with the peak emission of 545 nm with low Eu doping to about 560 nm with high Eu doping shifts.
Repräsentative Spektren werden im
folgenden gezeigt.
Erstaunlicherweise ergibt sich bei den in Tab. 1 zusammengefassten Leuchtstoffen nur eine sehr geringe Verschiebung der Wellenlänge der maximalen Emission von weniger als 5 nm. Die ersten drei Spalten zeigen die eingesetzten Erdalkalimetalle (EA) in mol-% des Gesamt-EA-Gehalts, die vierte Spalte zeigt die zugehörige Europium-Dotierung, die fünfte die resultierende Verbindung und die sechste Spalte zeigt das beobachtete Emissionsmaximum bei Anregung durch 400 nm-Strahlung.Amazingly, this results in the phosphors summarized in Tab. 1 only a very small one Wavelength shift the maximum emission of less than 5 nm. The first three columns show the alkaline earth metals (EA) used in mol% of the total EA content, the fourth Column shows the associated one Europium endowment, the fifth the resulting compound and the sixth column shows what was observed Emission maximum when excited by 400 nm radiation.
Tabelle 1 Table 1
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20218718U DE20218718U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20218718U DE20218718U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20218718U1 true DE20218718U1 (en) | 2004-04-15 |
Family
ID=32115651
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20218718U Expired - Lifetime DE20218718U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE20218718U1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1905810A1 (en) * | 2006-09-28 | 2008-04-02 | Canon Kabushiki Kaisha | Electron beam-excited blue phosphor |
US7556721B2 (en) | 2004-10-29 | 2009-07-07 | Ifire Ip Corporation | Thiosilicate phosphor compositions and deposition methods using barium-silicon vacuum deposition sources for deposition of thiosilicate phosphor films |
CN110578173A (en) * | 2019-10-25 | 2019-12-17 | 河北大学 | Nonlinear optical crystal strontium-lithium-silicon-sulfur and preparation method and application thereof |
-
2002
- 2002-12-02 DE DE20218718U patent/DE20218718U1/en not_active Expired - Lifetime
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7556721B2 (en) | 2004-10-29 | 2009-07-07 | Ifire Ip Corporation | Thiosilicate phosphor compositions and deposition methods using barium-silicon vacuum deposition sources for deposition of thiosilicate phosphor films |
EP1905810A1 (en) * | 2006-09-28 | 2008-04-02 | Canon Kabushiki Kaisha | Electron beam-excited blue phosphor |
US7763183B2 (en) | 2006-09-28 | 2010-07-27 | Canon Kabushiki Kaisha | Electron beam-excited blue phosphor |
CN110578173A (en) * | 2019-10-25 | 2019-12-17 | 河北大学 | Nonlinear optical crystal strontium-lithium-silicon-sulfur and preparation method and application thereof |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1206802B1 (en) | Led-based white-light emitting lighting unit | |
DE10105800B4 (en) | Highly efficient phosphor and its use | |
EP1471775B9 (en) | Light source with an arrangement of a luminescent substance and mouldable material with an arrangement of a luminescent substance | |
EP1970970B1 (en) | Lighting unit with at least one LED as light source | |
EP1278250B1 (en) | Illumination device with at least one LED as the light source | |
DE102004016232B4 (en) | White light emitting device | |
DE112007001638B9 (en) | Phosphorus from the class of nitridosilicates, process for producing a phosphor from the class of nitridosilicates and use of such a phosphor in a light source | |
DE10241140A1 (en) | Illuminating unit comprises a light emitting diode as light source which emits primary radiation which can be partially or completely converted into longer wavelength radiation using luminescent materials | |
DE10146719A1 (en) | Lighting unit with at least one LED as a light source | |
EP1285467A1 (en) | Led-based white-light emitting lighting unit | |
WO2010020495A1 (en) | Alpha-sialon phosphor | |
DE10147040A1 (en) | Lighting unit with at least one LED as a light source | |
DE102005005263A1 (en) | Yellow emitting phosphor and light source with such phosphor | |
DE112006003161T5 (en) | Charge-compensated nitride phosphors for use in lighting applications | |
DE10360546A1 (en) | Phosphor and light source with such phosphor | |
DE102006016548A1 (en) | Blue to yellow orange emitting phosphor substance of orthosilicate class, comprises a composition and a stiochiometric equation | |
DE102013215382A1 (en) | Fluorescent LED | |
EP2165351B1 (en) | ILLUMINANT MIXTURE FOR A DISCHARGE LAMP AND DISCHARGE LAMP, IN PARTICULAR AN Hg LOW PRESSURE DISCHARGE LAMP | |
EP2593526B1 (en) | Optoelectronic component | |
DE20218718U1 (en) | Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium | |
DE20108013U1 (en) | White-emitting LED-based lighting unit | |
DE20218717U1 (en) | Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium | |
DE202005011701U1 (en) | Fluorescent material, useful for luminescent conversions-light emitting diode, which emits yellow red spectral region, comprises a nitridosilicate doped with europium | |
DE10319091A1 (en) | Luminous material for conversion of primary into secondary radiation and doped with calcium orthosilicate and europium useful for light emitting diodes | |
DE20122557U1 (en) | Illuminating unit comprises an LED as a light source emitting primary radiation which is converted into longer wavelength radiation using a luminescent material originating from europium-activated Sialon |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
R207 | Utility model specification |
Effective date: 20040519 |
|
R150 | Utility model maintained after payment of first maintenance fee after three years |
Effective date: 20060306 |
|
R151 | Utility model maintained after payment of second maintenance fee after six years |
Effective date: 20090306 |
|
R079 | Amendment of ipc main class |
Free format text: PREVIOUS MAIN CLASS: H01L0033000000 Ipc: H01L0033500000 |
|
R152 | Utility model maintained after payment of third maintenance fee after eight years |
Effective date: 20110304 |
|
R071 | Expiry of right | ||
R071 | Expiry of right |