DE102014009512A1 - Planar tungsten radiator with a coating of ceramic microspheres - Google Patents
Planar tungsten radiator with a coating of ceramic microspheres Download PDFInfo
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- DE102014009512A1 DE102014009512A1 DE102014009512.6A DE102014009512A DE102014009512A1 DE 102014009512 A1 DE102014009512 A1 DE 102014009512A1 DE 102014009512 A DE102014009512 A DE 102014009512A DE 102014009512 A1 DE102014009512 A1 DE 102014009512A1
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- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 title claims abstract description 27
- 229910052721 tungsten Inorganic materials 0.000 title claims abstract description 27
- 239000010937 tungsten Substances 0.000 title claims abstract description 27
- 239000000919 ceramic Substances 0.000 title claims abstract description 17
- 239000004005 microsphere Substances 0.000 title claims abstract description 9
- 239000011248 coating agent Substances 0.000 title 1
- 238000000576 coating method Methods 0.000 title 1
- 230000000737 periodic effect Effects 0.000 claims abstract description 5
- 230000003647 oxidation Effects 0.000 claims abstract 4
- 238000007254 oxidation reaction Methods 0.000 claims abstract 4
- 239000000463 material Substances 0.000 claims description 7
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims 2
- 239000011859 microparticle Substances 0.000 claims 1
- 239000000758 substrate Substances 0.000 description 13
- 238000010521 absorption reaction Methods 0.000 description 10
- 239000006096 absorbing agent Substances 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000000862 absorption spectrum Methods 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000005524 ceramic coating Methods 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- BUHVIAUBTBOHAG-FOYDDCNASA-N (2r,3r,4s,5r)-2-[6-[[2-(3,5-dimethoxyphenyl)-2-(2-methylphenyl)ethyl]amino]purin-9-yl]-5-(hydroxymethyl)oxolane-3,4-diol Chemical compound COC1=CC(OC)=CC(C(CNC=2C=3N=CN(C=3N=CN=2)[C@H]2[C@@H]([C@H](O)[C@@H](CO)O2)O)C=2C(=CC=CC=2)C)=C1 BUHVIAUBTBOHAG-FOYDDCNASA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000004038 photonic crystal Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/04—Incandescent bodies characterised by the material thereof
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- 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
- C09K11/02—Use of particular materials as binders, particle coatings or suspension media therefor
- C09K11/025—Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media
-
- 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
- C09K11/67—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals
- C09K11/68—Luminescent, e.g. electroluminescent, chemiluminescent materials containing inorganic luminescent materials containing refractory metals containing chromium, molybdenum or tungsten
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01K—ELECTRIC INCANDESCENT LAMPS
- H01K1/00—Details
- H01K1/02—Incandescent bodies
- H01K1/04—Incandescent bodies characterised by the material thereof
- H01K1/10—Bodies of metal or carbon combined with other substance
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S10/00—PV power plants; Combinations of PV energy systems with other systems for the generation of electric power
- H02S10/30—Thermophotovoltaic systems
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Inorganic Chemistry (AREA)
- Laminated Bodies (AREA)
Abstract
Die vorliegende Erfindung bezieht sich auf einen planaren Wolfram-Strahler mit Keramikmikrobeschichtung, bestehend aus einer ersten Schicht, wobei die erste Schicht eine periodische oder aperiodische Anordnung von Keramik-Mikrokugeln aufweist; einer flachen zweiten Schicht, wobei die zweite Schicht eine Oxidationsschutzschicht in innigem Kontakt mit der ersten Schicht umfasst; und einer dritten Schicht, wobei die dritte Schicht eine Wolframgrundplatte in Kontakt mit der zweiten Schicht umfasst.The present invention relates to a planar ceramic tungsten radiator having a first layer, the first layer having a periodic or aperiodic arrangement of ceramic microspheres; a flat second layer, the second layer comprising an oxidation protection layer in intimate contact with the first layer; and a third layer, wherein the third layer comprises a tungsten base plate in contact with the second layer.
Description
Die vorliegende Erfindung bezieht sich auf die Gebiete der Thermophotovoltaik, der Beleuchtung sowie der solarthermischen Anwendungen.The present invention relates to the fields of thermo-photovoltaic, lighting and solar thermal applications.
Hochtemperaturstabile Materialien mit hoher Absorption bzw. Emission bei kurzen Wellenlängen und geringer Absorption bzw. Emission bei längeren Wellenlängen sind besonders erwünscht als Emitter für Thermophotovoltaik- und Beleuchtungsanwendungen sowie als Absorber für solarthermische Anwendungen.High temperature stable materials with high absorption or emission at short wavelengths and low absorption at longer wavelengths are particularly desirable as emitters for thermophotovoltaic and lighting applications as well as absorbers for solar thermal applications.
Diese Materialien sollten so ausgelegt sein, dass sie die erforderlichen optischen Eigenschaften bei hohen Temperaturen von mindestens 1000°C und mehr aufweisen.These materials should be designed to have the required optical properties at high temperatures of at least 1000 ° C and more.
Ein niedriges Emissionsvermögen in den längeren Wellenlängenbereichen ist für die Thermophotovoltaik wichtig, um die Verluste durch Wärmeabstrahlung bei Frequenzen unterhalb der Bandlücke einer Photovoltaikzelle zu reduzieren, da diese Frequenzen nicht zur Photostromerzeugung beitragen.Low emissivity in the longer wavelength ranges is important for thermophotovoltaics to reduce heat radiation losses at frequencies below the bandgap of a photovoltaic cell, as these frequencies do not contribute to photocurrent generation.
Für Beleuchtungsanwendungen sollten die längeren Wellenlängen ebenso vermieden werden, da sie für das menschliche Auge nicht sichtbar sind. Auch für selektive Solarabsorber wird durch den niedrigen Emissionsgrad bei langen Wellenlängen die Rückstrahlung der zu absorbierenden Leistung minimiert.For illumination applications, the longer wavelengths should also be avoided since they are invisible to the human eye. Even for selective solar absorbers, the low emissivity at long wavelengths minimizes the return of the power to be absorbed.
In der Vergangenheit wurden zahlreiche Systeme zur selektiven Emission bei Thermophotovoltaik-, Licht- und thermischen Solaranwendungen vorgeschlagen.Numerous selective emission systems have been proposed in the past for thermophotovoltaic, solar and light solar applications.
In der
In der
In der
Ein gemeinsames Merkmal aller Ansätze ist, dass das metallische Material mit Strukturgrößen in der Größenordnung von 30 nm bis 1 μm nanostrukturiert ist, um das charakteristische Verhalten der Strukturen in dem sichtbaren und nahen infraroten Spektralbereich zu erreichen.A common feature of all approaches is that the metallic material with feature sizes on the order of 30 nm to 1 μm is nanostructured to achieve the characteristic behavior of the structures in the visible and near infrared spectral range.
Nach
Um diese Nachteile zu umgehen, wird daher ein neuer hochtemperaturstabiler Absorber bzw. Emitter vorgeschlagen, der die erforderlichen optischen Eigenschaften sowohl für Licht- als auch für Thermophotovoltaikanwendungen zeigt – auch ohne die Notwendigkeit, die Metalloberfläche selbst strukturieren zu müssen.To avoid these disadvantages, therefore, a new high-temperature stable absorber or emitter is proposed, which shows the required optical properties for both light and thermophotovoltaic applications - even without the need to structure the metal surface itself.
Die erforderliche selektive Emission kann durch Abscheiden von Keramikmikrokugeln auf planaren Metalloberflächen wie Wolfram erhalten werden. Dafür können hochstabile, optisch transparente Keramikmaterialien wie z. B. HfO2, ZrO2, YSZ, Al2O3, Y2O3, MgO und andere ähnlichen Materialien oder deren Kombinationen verwendet werden.The required selective emission can be obtained by depositing ceramic microspheres on planar metal surfaces such as tungsten. For this purpose, highly stable, optically transparent ceramic materials such. As HfO 2 , ZrO 2 , YSZ, Al 2 O 3 , Y 2 O 3 , MgO and other similar materials or combinations thereof can be used.
Die Verteilung der Partikel auf der Oberfläche kann periodisch sein oder aperiodisch.The distribution of the particles on the surface may be periodic or aperiodic.
Die Variante mit Mikrokugeln zeigt einen scharfen Abfall der Absorption bei einer Wellenlänge von 1500 nm.The variant with microspheres shows a sharp decrease in absorption at a wavelength of 1500 nm.
Die durchschnittlichen Absorptionsraten unter senkrechtem Einfall für planares Wolframsubstrat, für das mit einer YSZ-Lage beschichtete Wolframsubstrat und für eines mit periodisch angeordneten YSZ-Kugeln betragen jeweils 44%, 68% und 76% für Wellenlängen von 400 nm bis 1500 nm.The average vertical incidence absorption rates for planar tungsten substrate, for the YSZ layer coated tungsten substrate, and for periodically arranged one YSZ spheres are 44%, 68% and 76%, respectively, for wavelengths from 400 nm to 1500 nm.
Die Absorptions- und Emissionseigenschaften können durch Variation der Kugelgröße verändert werden.The absorption and emission properties can be changed by varying the size of the sphere.
Bild 3 zeigt die berechnete Absorption (senkrechte Achse) als Funktion der Wellenlänge in Mikrometer (horizontale Achse) unter der Annahme von senkrechtem Einfall bei einer Variation des Radius für ein planares Wolframsubstrat mit einer Anordnung aus YSZ-Teilchen mit R = 200 nm (
Mit zunehmendem Radius erhöht sich auch die Grenzwellenlänge.As the radius increases, so does the cut-off wavelength.
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- Wolframsubstrattungsten substrate
- 22
- Keramikbeschichtungceramic coating
- 33
- KeramikmikrokugelnCeramic microspheres
- 44
- Absorptionsspektrum für planares Wolframsubstrat alleinAbsorption spectrum for planar tungsten substrate alone
- 55
- Absorptionsspektrum für planares Wolframsubstrat beschichtet mit einer 140 nm starken YSZ-LageAbsorption spectrum for planar tungsten substrate coated with a 140 nm YSZ layer
- 66
- Absorptionsspektrum für planares Wolframsubstrat beschichtet mit periodisch angeordneten YSZ-Kugeln mit einem Radius von 500 nmAbsorption spectrum for planar tungsten substrate coated with periodically arranged YSZ spheres with a radius of 500 nm
- 77
- Absorption für ein planares Wolframsubstrat mit einer Anordnung von YSZ-Teilchen mit R = 200 nmAbsorption for a planar tungsten substrate with an arrangement of YSZ particles with R = 200 nm
- 88th
- Absorption für ein planares Wolframsubstrat mit einer Anordnung von YSZ-Teilchen mit R = 300 nmAbsorption for a planar tungsten substrate with an arrangement of YSZ particles with R = 300 nm
- 99
- Absorption für ein planares Wolframsubstrat mit einer Anordnung von YSZ-Teilchen mit R = 400 nmAbsorption for a planar tungsten substrate with an arrangement of YSZ particles with R = 400 nm
ZITATE ENTHALTEN IN DER BESCHREIBUNG QUOTES INCLUDE IN THE DESCRIPTION
Diese Liste der vom Anmelder aufgeführten Dokumente wurde automatisiert erzeugt und ist ausschließlich zur besseren Information des Lesers aufgenommen. Die Liste ist nicht Bestandteil der deutschen Patent- bzw. Gebrauchsmusteranmeldung. Das DPMA übernimmt keinerlei Haftung für etwaige Fehler oder Auslassungen.This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.
Zitierte PatentliteraturCited patent literature
- US 6177628 [0007] US 6177628 [0007]
- US 20120312360 A1 [0008] US 20120312360 A1 [0008]
- US 20080238289 A1 [0009] US 20080238289 A1 [0009]
- US 20070228985 A1 [0009] US 20070228985 A1 [0009]
Zitierte Nicht-PatentliteraturCited non-patent literature
- H.-Ju Lee, K. Smyth, S. Bathurst, J. Chou, M. Ghebrebrhan, J. Joannopoulos, N. Saka, and S.-G. Kim, Appl. Phys. Lett. 102, 241904 (2013) [0011] H.-Ju Lee, K. Smyth, S. Bathurst, J. Chou, M. Ghebrebrhan, J. Joannopoulos, N. Saka, and S.-G. Kim, Appl. Phys. Lett. 102, 241904 (2013) [0011]
Claims (8)
Priority Applications (1)
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DE102014009512.6A DE102014009512A1 (en) | 2014-06-23 | 2014-06-23 | Planar tungsten radiator with a coating of ceramic microspheres |
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DE102014009512.6A DE102014009512A1 (en) | 2014-06-23 | 2014-06-23 | Planar tungsten radiator with a coating of ceramic microspheres |
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DE102014009512A1 true DE102014009512A1 (en) | 2015-12-24 |
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DE102014009512.6A Withdrawn DE102014009512A1 (en) | 2014-06-23 | 2014-06-23 | Planar tungsten radiator with a coating of ceramic microspheres |
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Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6177628B1 (en) | 1998-12-21 | 2001-01-23 | Jx Crystals, Inc. | Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators |
US20070228985A1 (en) | 2006-03-31 | 2007-10-04 | General Electric Company | High temperature ceramic composite for selective emission |
US20080238289A1 (en) | 2007-03-30 | 2008-10-02 | General Electric Company | Thermo-optically functional compositions, systems and methods of making |
US20120312360A1 (en) | 2011-05-18 | 2012-12-13 | Gennady Shvets | Thin-film integrated spectrally-selective plasmonic absorber/ emitter for solar thermophotovoltaic applications |
-
2014
- 2014-06-23 DE DE102014009512.6A patent/DE102014009512A1/en not_active Withdrawn
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6177628B1 (en) | 1998-12-21 | 2001-01-23 | Jx Crystals, Inc. | Antireflection coated refractory metal matched emitters for use in thermophotovoltaic generators |
US20070228985A1 (en) | 2006-03-31 | 2007-10-04 | General Electric Company | High temperature ceramic composite for selective emission |
US20080238289A1 (en) | 2007-03-30 | 2008-10-02 | General Electric Company | Thermo-optically functional compositions, systems and methods of making |
US20120312360A1 (en) | 2011-05-18 | 2012-12-13 | Gennady Shvets | Thin-film integrated spectrally-selective plasmonic absorber/ emitter for solar thermophotovoltaic applications |
Non-Patent Citations (1)
Title |
---|
H.-Ju Lee, K. Smyth, S. Bathurst, J. Chou, M. Ghebrebrhan, J. Joannopoulos, N. Saka, and S.-G. Kim, Appl. Phys. Lett. 102, 241904 (2013) |
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