DE20218717U1 - Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium - Google Patents
Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium Download PDFInfo
- Publication number
- DE20218717U1 DE20218717U1 DE20218717U DE20218717U DE20218717U1 DE 20218717 U1 DE20218717 U1 DE 20218717U1 DE 20218717 U DE20218717 U DE 20218717U DE 20218717 U DE20218717 U DE 20218717U DE 20218717 U1 DE20218717 U1 DE 20218717U1
- Authority
- DE
- Germany
- Prior art keywords
- led
- alkaline earth
- phosphor
- sodium
- combination
- 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
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
- C09K11/74—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing arsenic, antimony or bismuth
- C09K11/7407—Chalcogenides
- C09K11/7421—Chalcogenides with alkaline earth metals
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B33/00—Electroluminescent light sources
- H05B33/12—Light sources with substantially two-dimensional radiating surfaces
- H05B33/14—Light sources with substantially two-dimensional radiating surfaces characterised by the chemical or physical composition or the arrangement of the electroluminescent material, or by the simultaneous addition of the electroluminescent material in or onto the light source
-
- 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 with at least one potential-jump barrier or surface barrier 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 with at least one potential-jump barrier or surface barrier 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
Abstract
Description
Technisches Gebiettechnical area
Die Erfindung geht aus von einem Leuchtstoff, insbesondere für Lumineszenzkonversions-LED gemäß dem Oberbegriff des Anspruchs 1. Es handelt sich dabei insbesondere um Sulfide, die mit Natrium bzw. Wismut 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 Phosphor, especially for Luminescence conversion LED according to the generic term of claim 1. These are in particular sulfides, which are doped with sodium or bismuth. These are around phosphors 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 01/24229 ist bereits eine Leuchtstoff, insbesondere für Lumineszenzkonversions-LED bekannt, der auf Sulfiden der Erdalkalien basiert, die mit Europium oder Cer dotiert sein können. Die Palette der damit erreichbaren Leuchtstoffe reicht für eine vollständige Abdeckung der gewünschten Farborte nicht aus. Zudem weisen einige dieser Sulfide 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 01/24229 already contains a phosphor, especially for Luminescence conversion LED known, which is based on sulfides of alkaline earth, which can be doped with europium or cerium. The range of it Attainable phosphors are sufficient for complete coverage the desired one Color locations not out. In addition, some of these sulfides are spectral 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 sowie Temperaturverhalten genügen.It is an object of the present invention Fluorescent 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 and temperature behavior are sufficient.
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 to provide one corresponding lighting unit.
Erfindungsgemäß handelt es sich bei den Leuchtstoffen um Erdalkali-Sulfide, die mit Natrium (Na) und/oder Wismut (Bi) dotiert sind. Sie gewährleisten eine gute Anregung bei Wellenlängen um 400 bis 460 nm, bevorzugt bei 420 bis 450 nm, und eine Emission im blaugrünen Bereich um 475 bis 510, insbesondere 480 bis 500 nm. Sie genügen der Formel EA1–xS:(Na,Bi)x. Dabei ist EA ein oder mehrere Erdalkalimetalle, ausgewählt aus der Gruppe Sr, Mg, Ca, Ba. Bisher existieren keine Konverterleuchtstoffe, die für diesen Spektralbereich einsetzbar sind.According to the invention, the phosphors are alkaline earth metal sulfides which are doped with sodium (Na) and / or bismuth (Bi). They ensure good excitation at wavelengths around 400 to 460 nm, preferably at 420 to 450 nm, and emission in the blue-green range around 475 to 510, in particular 480 to 500 nm. They satisfy the formula EA 1-x S: (Na, Bi) x . EA is one or more alkaline earth metals, selected from the group Sr, Mg, Ca, Ba. So far, there are no converter phosphors that can be used for this spectral range.
Bevorzugt wird Sr alleine oder mit geringen Beimengungen (bis 40 mol-% des gesamten EA-Gehalts) an Ba und/oder Ca verwendet. Der Anteil des Dotierstoffs Na bzw. Bi liegt bevorzugt im Bereich x = 0,005 bis 0,03. Dabei wird entweder Bi alleine oder in Verbindung mit Na zugegeben.Sr is preferred alone or with low additions (up to 40 mol% of the total EA content) Ba and / or Ca used. The proportion of the dopant Na or Bi is preferably in the range x = 0.005 to 0.03. Doing so will either Bi added alone or in combination with Na.
Besonders bevorzugt ist eine Verbindung (SraCabBac)1–xS:(Na,Bi)x mitA compound (Sr a Ca b Ba c ) 1-x S: (Na, Bi) x with is particularly preferred
- 0,7 ≤ a ≤ 1; 0 ≤ b ≤ 0,25; 0 ≤ c ≤ 0,06.0.7 ≤ a ≤ 1; 0 ≤ b ≤ 0.25; 0 ≤ c ≤ 0.06.
Dabei liegt x bevorzugt im Bereich x = 0,015 bis 0,025, wobei Na und Bi gleichermaßen, insbesondere im Verhältnis 0,5 bis 2, vorhanden sind. Besonders gute Ergebnisse liefert ein Verhältnis Na:Bi = 0,9 bis 1,1. Diese Verbindungen zeigen besonders gute und effiziente Anregbarkeit bei Wellenlängen zwischen 420 und 450 nm sowie effiziente grüne Photolumineszenz mit einem Maximum bei etwa 490 nm.X is preferably in the range x = 0.015 to 0.025, where Na and Bi equally, in particular in a ratio of 0.5 to 2, are present. A Na: Bi ratio gives particularly good results = 0.9 to 1.1. These connections are particularly good and efficient Excitability at wavelengths between 420 and 450 nm and efficient green photoluminescence with one Maximum at around 490 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. It demonstrate:
Bevorzugte Ausführung der Erfindungpreferred execution the invention
Für
den Einsatz in einer weißen
LED zusammen mit einem GalnN-Chip wird beispielsweise ein Aufbau ähnlich wie
in
In
Bei den erfindungsgemäßen Leuchtstoffen des Sulfid-Typs handelt es sich überwiegend um Sr-Sulfide des Typs (SrEA)1–xS, wobei ein Anteil x des Kations Sr, der zwi schen 0,5 und 4 mol % liegt, durch die gleichzeitige Dotierung mit Na und Bi ersetzt ist. Typische Quanteneffizienzen dieser Leuchtstoffe liegen bei mehr als 50 %, wobei sich die Peakemission von 480 nm bei geringer Dotierung zu etwa 500 nm bei hoher Dotierung verschiebt.In the phosphors of the invention It is predominantly sulfide type to Sr sulfides of the type (SrEA) 1-xS, where a proportion x of the cation Sr, between 0.5 and 4 mol% is replaced by the simultaneous doping with Na and Bi. Typical quantum efficiencies of these phosphors are more than 50%, the peak emission of 480 nm with low doping shifts to about 500 nm with high doping.
Ein repräsentatives Anregungs- und Emissionsspektrum
ist in
Claims (6)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20218717U DE20218717U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE20218717U DE20218717U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium |
Publications (1)
Publication Number | Publication Date |
---|---|
DE20218717U1 true DE20218717U1 (en) | 2004-04-15 |
Family
ID=32115650
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE20218717U Expired - Lifetime DE20218717U1 (en) | 2002-12-02 | 2002-12-02 | Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE20218717U1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006045195A1 (en) * | 2004-10-29 | 2006-05-04 | Ifire Technology Corp. | Novel thiosilicate phosphor compositions and deposition methods using barium-silicon vacuum deposition sources for deposition of thiosilicate phosphor films |
-
2002
- 2002-12-02 DE DE20218717U patent/DE20218717U1/en not_active Expired - Lifetime
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2006045195A1 (en) * | 2004-10-29 | 2006-05-04 | Ifire Technology Corp. | Novel thiosilicate phosphor compositions and deposition methods using barium-silicon vacuum deposition sources for deposition of thiosilicate phosphor films |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP1206802B1 (en) | Led-based white-light emitting lighting unit | |
EP2357678B1 (en) | Wavelength converter and light source for generating white light | |
DE102004016232B4 (en) | White light emitting device | |
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 | |
EP2264762B1 (en) | Illumination device with at least one LED as the 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 | |
EP2313473B1 (en) | Alpha-sialon phosphor | |
EP1278250A2 (en) | Illumination device with at least one LED as the light source | |
DE10360546A1 (en) | Phosphor and light source with such phosphor | |
EP1285467A1 (en) | Led-based white-light emitting lighting unit | |
WO2002011214A1 (en) | Illumination device with at least one led as the light source | |
EP1296383A2 (en) | Radiation unit with at least one LED | |
WO2006081803A1 (en) | Illuminant emitting yellow light and light source provided with such an illuminant | |
DE102013215382A1 (en) | Fluorescent LED | |
WO2009010438A1 (en) | ILLUMINANT MIXTURE FOR A DISCHARGE LAMP AND DISCHARGE LAMP, IN PARTICULAR AN Hg LOW PRESSURE DISCHARGE LAMP | |
DE102007020782A1 (en) | Radiation emitting device comprises a radiation-emitting functional layer emitting primary radiation in blue region, radiation conversion material arranged in beam path of the functional layer, and radiation conversion luminescent material | |
DE20218717U1 (en) | Luminescent material for luminescence conversion LEDs comprises alkaline earth sulfide doped with bismuth alone or in combination with sodium | |
DE20218718U1 (en) | Luminescent material for luminescence conversion LEDs comprises alkaline earth thiosilicate doped with europium | |
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 | Term of protection extended to 6 years |
Effective date: 20060306 |
|
R151 | Term of protection extended to 8 years |
Effective date: 20090306 |
|
R152 | Term of protection extended to 10 years |
Effective date: 20110304 |
|
R071 | Expiry of right | ||
R071 | Expiry of right |