Effect of transmittance on luminescence properties of phosphor-in-glass for LED packaging

The transmittance of phosphor-in-glass (PIG) color converter material was studied as a factor affecting the luminescence properties of light emitting diode packaging; it is closely related to the residual pores of sintered glass. In this study, the correlation between porosity and optical properties...

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Bibliographic Details
Published in:Optics express 2015-02, Vol.23 (3), p.A43-A50
Main Authors: Kim, Yurian, Kim, Sunil, Iqbal, Fauzia, Yie, Hoyong, Kim, Hyungsun
Format: Article
Language:English
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Summary:The transmittance of phosphor-in-glass (PIG) color converter material was studied as a factor affecting the luminescence properties of light emitting diode packaging; it is closely related to the residual pores of sintered glass. In this study, the correlation between porosity and optical properties of the glass and PIG plates was investigated. The transmittance, luminescence properties, and porosity were measured by UV-visible spectrometer, integrating sphere and scanning electron microscope, respectively. Transmittance of the sintered glass plate and the luminous efficacy of the PIG plate both increase with decreased porosity, while the light scattering coefficient decreases. Luminescence properties such as emission intensity and color coordinates are also influenced by transmittance of the PIG plate.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.23.000A43