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公开(公告)号：US10240086B2
公开(公告)日：2019-03-26
申请号：US14829118
申请日：2015-08-18
发明人： Madis Raukas , Krister Bergenek , George C. Wei , Nathan M. Zink , Stefan Lange
摘要： A radiation-emitting component comprising a ceramic material, comprising a garnet having the composition represented by the formula A3-xB5O12:Dx and a barium-containing oxide. In the garnet A3-xB5O12:Dx, A is selected from lutetium, yttrium, gadolinium, terbium, scandium, another rare earth metal or mixtures thereof. B is selected from aluminum, scandium, gallium, indium, boron or mixtures thereof. D is at least one dopant selected from chromium, manganese and rare earth metals, particularly cerium, praseodymium or gadolinium. The dopant is present with x is 0≤x≤2.
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公开(公告)号：US20240178349A1
公开(公告)日：2024-05-30
申请号：US18398114
申请日：2023-12-27
发明人： Jonathan Owen , Maria J. Anc , Madis Raukas , Joseph Treadway , Anindya Swarnakar , Brandon McMurtry
CPC分类号： H01L33/502 , C09K11/70 , H01L33/507 , H01L2933/0041
摘要： In an embodiment a quantum dot structure includes a core having a III-V-compound semiconductor material, an intermediate region having a III-V-compound semiconductor material at least partially surrounding the core, a shell having a III-V-compound semiconductor material at least partially surrounding the core and the intermediate region and a passivation region having a II-VI-compound semiconductor material at least partially surrounding the shell, wherein the core, the intermediate region, and the shell form a quantum well structure.
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公开(公告)号：US11271141B2
公开(公告)日：2022-03-08
申请号：US16199755
申请日：2018-11-26
发明人： Maria J. Anc , Darshan Kundaliya , Madis Raukas , David O'Brien
摘要： A light-emitting device including a light-emitting semiconductor chip having a semiconductor layer sequence having at least one light-emitting semiconductor layer and a light-outcoupling surface, the light-emitting device further including a wavelength conversion layer arranged on the light-outcoupling surface, the wavelength conversion layer including quantum dots.
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公开(公告)号：US10941078B2
公开(公告)日：2021-03-09
申请号：US15661183
申请日：2017-07-27
发明人： Zhengbo Yu , Madis Raukas , Yi Zheng
IPC分类号： C04B35/599 , C09K11/08 , C04B35/597 , C09K11/77 , F21V9/30
摘要： Methods for producing wavelength converters are described. The methods include sintering a mixture consisting essentially of first particles and second particles to form a sintered article. In embodiments the first particles consist essentially of particles of β-SiAlON or precursors thereof, and the second particles consist essentially one or more sintering aids or precursors thereof. In embodiments the sintered article has a density that is greater than or equal to about 90% of a theoretical bulk density of the mixture, and is configured to convert primary light incident thereon to secondary light, wherein the secondary light exhibits a peak with a full width half maximum of greater than 0 to about 60 nanometers (nm) within a wavelength range of about 495 nm to about 600 nm.
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公开(公告)号：US11294195B2
公开(公告)日：2022-04-05
申请号：US16181284
申请日：2018-11-05
发明人： Luca Dal Negro , Alan Lenef , Madis Raukas , Sean Gorsky , Ran Zhang
摘要： Disclosed herein are a number of dielectric pillars, arranged to form a close-packed aperiodic array, such as a Vogel spiral, where the geometries of the aperiodic array produce azimuthally isotropic scattering of luminescence within a restricted angular cone of extraction. The aperiodic array can be formed, attached or placed on a converting material, such as, phosphor, to restrict emission to within the angular cone of extraction. The phosphor could be part of a converting illumination device, such as a phosphor coated light emitting diode, or a laser activated remote phosphor converting device.
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公开(公告)号：US10964853B2
公开(公告)日：2021-03-30
申请号：US15762126
申请日：2016-09-19
发明人： Yi Zheng , Sonja Tragl , Juliane Kechele , Johanna Strube-Knyrim , Madis Raukas , Stefan Lange , Daniel Bichler
摘要： Wavelength converters including coarse particles/grains of a red nitride phosphor are disclosed. In some embodiments the red nitride phosphor is a (Ca,Sr,Ba)2Si5N8:Eu phosphor with a D50 grain size or a D50 particle size that is ≥5 microns. The red nitride phosphor may be encapsulated within an organic matrix or present in an inorganic matrix. In the latter case, the inorganic matrix may include fine grains with a D50 grain size
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7.发明申请公开(公告)号：US20200161506A1
公开(公告)日：2020-05-21
申请号：US16198108
申请日：2018-11-21
发明人： Zhengbo Yu , Madis Raukas , John F. Kelso
IPC分类号： H01L33/50
摘要： A method for producing a ceramic converter element is provided. The method includes providing a phosphor as a starting material, mixing the phosphor and at least one metal oxide powder to form a mixture, and processing the mixture to form a ceramic converter material in which the phosphor is embedded in a ceramic matrix. Further, an optoelectronic component with a ceramic converter element and a ceramic converter element are provided.
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公开(公告)号：US20180277720A1
公开(公告)日：2018-09-27
申请号：US15762126
申请日：2016-09-19
发明人： Yi Zheng , Sonja Tragl , Juliane Kechele , Johanna Strube-Knyrim , Madis Raukas , Stefan Lange , Daniel Bichler
CPC分类号： H01L33/502 , C09K11/025 , C09K11/0883 , C09K11/7734
摘要： Wavelength converters including coarse particles/grains of a red nitride phosphor are disclosed. In some embodiments the red nitride phosphor is a (Ca,Sr,Ba)2Si5N8:Eu phosphor with a D50 grain size or a D50 particle size that is ≥5 microns. The red nitride phosphor may be encapsulated within an organic matrix or present in an inorganic matrix. In the latter case, the inorganic matrix may include fine grains with a D50 grain size
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公开(公告)号：US20200168771A1
公开(公告)日：2020-05-28
申请号：US16199755
申请日：2018-11-26
发明人： Maria J. Anc , Darshan Kundaliya , Madis Raukas , David O'Brien
摘要： A light-emitting device including a light-emitting semiconductor chip having a semiconductor layer sequence having at least one light-emitting semiconductor layer and a light-outcoupling surface, the light-emitting device further including a wavelength conversion layer arranged on the light-outcoupling surface, the wavelength conversion layer including quantum dots.
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公开(公告)号：US20180298281A1
公开(公告)日：2018-10-18
申请号：US15735154
申请日：2016-06-07
发明人： Zhengbo Yu , Jason Montaner , Madis Raukas , Yi Zheng , Sonja Tragl , Dominik Eisert
摘要： A composite oxynitride ceramic converter and a light source having the same are disclosed. In an embodiment the composite oxynitride ceramic converter includes a first phase of a triclinic SrSi2O2N2:Eu phosphor and a second phase of a hexagonal Sr3Si6N4O9:Eu phosphor.
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