Transparent Ce3+: Y3Al5O12 glass ceramic for organic-resin-free white-light-emitting diodes

A transparent Ce3+ : Y3Al5O12 (Ce: YAG) glass ceramic with high quantum yield of 94% and improved thermal-quenching feature, using low-cost Sb2O3-based glass as host, is developed to replace the conventional phosphor/organic-resin color converter. The constructed glass-ceramic-based white-light-emitting diode exhibits a high luminous efficiency of 130 lm/W, superior to that of the conventional pc-WLED (95 lm/W), and a correlated color temperature of 5298 K as well as a color rendering index of 65, which reveal the prominent feasibility of the present glass ceramic material in high-power organic-resin-free WLED application. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.