Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Ce:YAG/Al2O3 COMPOSITES FOR LASER-EXCITED SOLID-STATE WHITE LIGHTING
A method for fabricating a composite useful in a white light emitting device, includes mixing a phosphor and a filler to form a mixture; sintering the mixture (e.g., using spark plasma sintering) to form a composite; and annealing the composite to reduce oxygen vacancies and improve optical properties of the composite. Also disclosed is a white light emitting device including a laser diode or light emitting diode optically pumping the phosphor in the composite to produce white light. The composite fabricated using the method (and having. e.g., at most 50% phosphor by weight) can (1) reduce an operating temperature of the phosphor by 55 degrees, (2) increase an external quantum efficiency (e.g., by at least 15%) of the white light emitting device, and (3) result in color points and quality of the white light that is equal to or improved, as compared to without the filler.
Ce:YAG/Al2O3 COMPOSITES FOR LASER-EXCITED SOLID-STATE WHITE LIGHTING
A method for fabricating a composite useful in a white light emitting device, includes mixing a phosphor and a filler to form a mixture; sintering the mixture (e.g., using spark plasma sintering) to form a composite; and annealing the composite to reduce oxygen vacancies and improve optical properties of the composite. Also disclosed is a white light emitting device including a laser diode or light emitting diode optically pumping the phosphor in the composite to produce white light. The composite fabricated using the method (and having. e.g., at most 50% phosphor by weight) can (1) reduce an operating temperature of the phosphor by 55 degrees, (2) increase an external quantum efficiency (e.g., by at least 15%) of the white light emitting device, and (3) result in color points and quality of the white light that is equal to or improved, as compared to without the filler.
Ce:YAG/Al2O3 COMPOSITES FOR LASER-EXCITED SOLID-STATE WHITE LIGHTING
COZZAN CLAYTON J (Autor:in) / DENBAARS STEVEN P (Autor:in) / SESHADRI RAM (Autor:in)
29.08.2019
Patent
Elektronische Ressource
Englisch
Ce:YAG/A12O3 composites for laser-excited solid-state white lighting
| Europäisches Patentamt | 2022
Method for preparing Ce:YAG fluorescent ceramic through laser sintering
| Europäisches Patentamt | 2021
Method of manufacturing Ce:YAG polycrystalline phosphor
| Europäisches Patentamt | 2017
Luminescence studies of Ce:YAG using vacuum ultraviolet synchrotron radiation
| British Library Online Contents | 2006
Preparation method of red overglaze color Ce:YAG fluorescent ceramic based on 3D printing
| Europäisches Patentamt | 2021