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Phosphor-in-fluorescent-glasses for high color rendering white light emitting diodes.
- Source :
-
Journal of the American Ceramic Society . Jun2017, Vol. 100 Issue 6, p2378-2381. 4p. - Publication Year :
- 2017
-
Abstract
- Fluorescent glass frits were prepared and used to synthesize phosphor-in-fluorescent glass composites (PiFGs) to realize stable white light emitting diodes with high color-rendering properties. Commercial red, green, and blue phosphors were co-sintered and red phosphors were partially replaced by Eu3+ in glass frits. Phosphor-in-glass composites were placed on UV-light emitting diodes ( UV- LEDs) to generate white light. Pure white light with a luminous efficacy=58.4 lm/W, general color rendering index Ra=87 and special color rendering index for strong red R9=73 was realized with glass frits containing 7 mol% Eu2O3 and RGB ratio of 35:20:15. Luminous efficacy, Ra and R9 increased as red phosphors were replaced by red-fluorescent glass frits. [ABSTRACT FROM AUTHOR]
- Subjects :
- *PHOSPHORS
*GLASS composites
*FLUORESCENCE
*LIGHT emitting diodes
*OPTICAL materials
Subjects
Details
- Language :
- English
- ISSN :
- 00027820
- Volume :
- 100
- Issue :
- 6
- Database :
- Academic Search Index
- Journal :
- Journal of the American Ceramic Society
- Publication Type :
- Academic Journal
- Accession number :
- 123348382
- Full Text :
- https://doi.org/10.1111/jace.14871