White luminescence characteristics of red/green silicate phosphor-glass thick film layers printed on glass substrate

Oh Hyeon Kwon, Jun Sik Kim, Jin Woo Jang, Heesun Yang, Yong Soo Cho

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)

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 languageEnglish
Pages (from-to)938-945
Number of pages8
JournalOptical Materials Express
Volume6
Issue number3
DOIs
Publication statusPublished - 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.

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials

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