A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
CERAMIC COMPLEX FOR LIGHT CONVERSION AND LIGHT-EMITTING DEVICE USING SAME
Provided is a ceramic composite for light conversion, which can make the fluorescence dominant wavelength longer up to 580 nm, further arbitrarily adjust the wavelength in the range of 570 to 580 nm, and undergoes no decrease in fluorescence intensity even when the fluorescence dominant wavelength is made longer, with luminescence unevenness suppressed. Furthermore, a ceramic composite for light conversion is provided which is excellent in heat resistance, and preferred for increasing the output of a white light-emitting device. Furthermore, a light-emitting device is provided which uses the ceramic composite for light conversion mentioned above. The ceramic composite for light conversion is a solidified body including a composition expressed by the following formula (1), where the composition has a structure where at least two oxide phases of a first phase and a second phase are continuously and three-dimensionally entangled mutually, and the ceramic composite for light conversion is characterized in that the first phase is a (Tb, Y) 3 Al 5 O 12 phase activated with Ce for producing fluorescence, whereas the second phase is an Al 2 O 3 phase.
CERAMIC COMPLEX FOR LIGHT CONVERSION AND LIGHT-EMITTING DEVICE USING SAME
Provided is a ceramic composite for light conversion, which can make the fluorescence dominant wavelength longer up to 580 nm, further arbitrarily adjust the wavelength in the range of 570 to 580 nm, and undergoes no decrease in fluorescence intensity even when the fluorescence dominant wavelength is made longer, with luminescence unevenness suppressed. Furthermore, a ceramic composite for light conversion is provided which is excellent in heat resistance, and preferred for increasing the output of a white light-emitting device. Furthermore, a light-emitting device is provided which uses the ceramic composite for light conversion mentioned above. The ceramic composite for light conversion is a solidified body including a composition expressed by the following formula (1), where the composition has a structure where at least two oxide phases of a first phase and a second phase are continuously and three-dimensionally entangled mutually, and the ceramic composite for light conversion is characterized in that the first phase is a (Tb, Y) 3 Al 5 O 12 phase activated with Ce for producing fluorescence, whereas the second phase is an Al 2 O 3 phase.
CERAMIC COMPLEX FOR LIGHT CONVERSION AND LIGHT-EMITTING DEVICE USING SAME
KERAMIKKOMPLEX ZUR LICHTUMWANDLUNG UND LICHTEMITTIERENDE VORRICHTUNG DAMIT
COMPLEXE CÉRAMIQUE POUR LA CONVERSION DE LA LUMIÈRE ET DISPOSITIF ÉLECTROLUMINESCENT L'UTILISANT
IBA HISAYOSHI (author) / ISHITOBI SHINICHI (author) / ICHIZONO YASUYUKI (author)
2016-01-20
Patent
Electronic Resource
English
Ceramic composite for light conversion and light-emitting device using same
| European Patent Office | 2017
Ceramic complex light emitting device using the same, and method for producing ceramic complex
| European Patent Office | 2022
LIGHT-EMITTING CERAMIC, PREPARATION METHOD, WAVELENGTH CONVERSION DEVICE, AND LIGHT-EMITTING DEVICE
| European Patent Office | 2025