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Proceedings Paper

White-light-emitting diodes based on Ba2+ co-doped Sr3SiO5: Ce3+, Li+ phosphor
Author(s): Changyu Shen; Ke Li; Yi Yang
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Paper Abstract

A yellow-orange-emitting Ba2+ codoped Sr3SiO5: Ce3+, Li+ phosphor was prepared by high-temperature solid-state reaction. Through transitions of 5d→4f in Ce3+, the phosphor showed a very broad and strong yellow emission under near ultraviolet (UV) or blue light excitation. The shifts of the emission band to longer wavelength (yellow-orange) of the Sr3SiO5: Ce3+, Li+ yellow phosphor under the 450-470 nm excitation range have been achieved by adding the element Ba2+ in the Sr3SiO5 host. White light could be obtained by combining this phosphor with 460nm light-emitting diodes. As the concentrations of the Ba2+, Ce3+ and Li+ ions in the phosphor were 0.35mol, 0.024mol and 0.024mol respectively, the InGaN-based Ba2+ codoped Sr3SiO5: Ce3+, Li+ LED presented intense white emitting and good color rendering of 88.

Paper Details

Date Published: 25 November 2009
PDF: 6 pages
Proc. SPIE 7635, Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy, 76350K (25 November 2009); doi: 10.1117/12.849964
Show Author Affiliations
Changyu Shen, China Jiliang Univ. (China)
Ke Li, China Jiliang Univ. (China)
Yi Yang, China Jiliang Univ. (China)

Published in SPIE Proceedings Vol. 7635:
Display, Solid-State Lighting, Photovoltaics, and Optoelectronics in Energy
Heonsu Jeon; Chih-Chung Yang, Editor(s)

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