YAG glass-ceramic phosphor for white LED (II): luminescence characteristics

@inproceedings{Tanabe2005YAGGP,
  title={YAG glass-ceramic phosphor for white LED (II): luminescence characteristics},
  author={S. Tanabe and S. Fujita and S. Yoshihara and A. Sakamoto and Shigeru Yamamoto},
  booktitle={SPIE Optics + Photonics},
  year={2005}
}
Optical properties of the Ce:YAG glass-ceramic (GC) phosphor for the white LED were investigated. Concentration dependence of fluorescence intensity of Ce3+:5d→4f transition in the GC showed a maximum at 0.5mol%Ce2O3. Quantum efficiency (QE) of Ce3+ fluorescence in the GC materials, the color coordinate and luminous flux of electroluminescence of LED composite were evaluated with an integrating sphere. QE increased with increasing ceramming temperature of the as-made glass. The color… Expand
Control of chromaticity by phosphor in glasses with low temperature sintered silicate glasses for LED applications.
TLDR
By simply varying the mixing ratio of glass to phosphors as well as the ratio of yellow to red phosphors, the facile control of the CIE chromaticity coordinates and correlated color temperature of the LED following the Planckian locus has been achieved. Expand
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Luminescent ceramics may exhibit less scattering and increase the conversion efficiency over prior phosphor layers. Recently, the great majority of the commercial white LED (light emitting diodes)Expand
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In the present article we briefly review some materials research aspects related to ceramic phosphors and discuss both typical characteristics as well as unique features of such optical converters.Expand
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Abstract Currently, the major commercial white light-emitting diode is the phosphor converted LED made of blue-emitting chip and Y 3 Al 5 O 12 :Ce 3+ yellow phosphor dispersed in organic silicone.Expand
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Abstract A new, rapid method was reported to produce Y3Al5O12 phosphors doped with different concentrations of Ce3+ (YAG:Ce3+) within 1.5 min via continuous-wave CO2 laser irradiation, in which a CO2Expand
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Abstract The white LED was fabricated using a mixture of phosphors (LuAG: Ce and CaAlSiN3: Eu) in bismuthate glass as converted materials. The phosphors (LuAG: Ce and CaAlSiN3: Eu) in glass wasExpand
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A novel Ce3+:YAG doped sodium glass (CeYDG) with low-melting temperature of 693°C and high internal quantum yield of 68% for white-light-emitting diodes (WLEDs) is demonstrated. The glass phosphorExpand
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