Abstract
Remote phosphor thick film layers consisting of red/green silicate phosphors embedded in a glass matrix were investigated in terms of the feasibility of a printing process onto a soda lime silicate glass substrate and the resultant performance of white luminescence. Densification of the phosphor layers via a viscous flow of the glass matrix at a low temperature of 400 °C was a key element of the success since the low temperature avoids chemical degradation of the phosphors. Photoluminescence and luminous efficacy were dependent on the relative content of the red/green phosphors. As an optimal example, the thick film containing 30 wt% red and 70 wt% green phosphors demonstrated the best efficiency of ~55.1 lm/W with excellent chromaticity coordinates.
Original language | English |
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Pages (from-to) | 938-945 |
Number of pages | 8 |
Journal | Optical Materials Express |
Volume | 6 |
Issue number | 3 |
DOIs | |
Publication status | Published - 2016 Mar 1 |
Bibliographical note
Funding Information:This work was supported by a research grant (NRF-2013R1A2A2A01016711) funded by the National Research Foundation of Korea.
Publisher Copyright:
© 2016 Optical Society of America.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials