4.7 Article

Stable and Color-Tailorable White Light from Blue LEDs Using Color-Converting Phosphor-Glass Composites

Journal

JOURNAL OF THE AMERICAN CERAMIC SOCIETY
Volume 97, Issue 2, Pages 342-345

Publisher

WILEY-BLACKWELL
DOI: 10.1111/jace.12739

Keywords

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Funding

  1. Priority Research Centers Program [2009-0094036]
  2. WCU (World Class University) program through the National Research Foundation (NRF) [R31-30005]
  3. Ministry of Education, Science and Technology of Korea

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Commercial Ce3+:YAG phosphors were embedded in glass frits. Thermal condition for the viscous sintering of the composite materials was optimized. The phosphor-glass composites had maximum external efficiency of 30% and maximum light extraction efficiency of 39%. Color temperatures of the composites composed of fluorescent glass frits containing Eu3+ and Mn2+ combined with blue LEDs shifted from similar to 7000 to similar to 4000K.

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