Luminescence Properties of Eu2+-Doped Red-Emitting Sr-Containing Sialon Phosphor

We developed a Eu 2+ -doped red-emitting Sr-containing sialon phosphor Sr 2 Si 7 Al 3 ON 13 :Eu 2+ that could play a very important role in high color rendering of white light-emitting diodes (LEDs) for solid-state lighting. It realizes both high efficiency and small thermal quenching under excitati...

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Bibliographic Details
Published in:Applied physics express 2012-06, Vol.5 (6), p.062102-062102-3
Main Authors: Fukuda, Yumi, Okada, Aoi, Albessard, Ariane Keiko
Format: Article
Language:English
Online Access:Get full text
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Summary:We developed a Eu 2+ -doped red-emitting Sr-containing sialon phosphor Sr 2 Si 7 Al 3 ON 13 :Eu 2+ that could play a very important role in high color rendering of white light-emitting diodes (LEDs) for solid-state lighting. It realizes both high efficiency and small thermal quenching under excitation by blue light, which are essential for operation in a high-temperature atmosphere. It shows a highly efficient red luminescence whose external quantum efficiency reaches 73% for 450 nm excitation. These features show that this red-emitting phosphor has high potential for application to white LEDs.
ISSN:1882-0778
1882-0786
DOI:10.1143/APEX.5.062102