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Proceedings Paper

Synthesis and luminous characteristics of Ba3CaSi2-xAlxO8:Eu, Mn phosphor for white LED
Author(s): Changyu Shen; Yi Yang; Shangzhong Jin; Jiangzhou Ming
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Paper Abstract

Ba3CaSi1.7Al0.3O8: Eu, Mn white-emitting phosphor was prepared by solid reaction and X-ray powder diffraction (XRD) analysis confirmed the formation of Ba3CaSi1.7Al0.3O8: 0.1Eu, 0.1Mn. It was found experimentally that, its three-color emission peaks situated at 621, 491 and 435 nm respectively under excitation of 350-450nm irradiation. The 435nm and 491nm emission bands are attributed to 4f to 5d transition of Eu2+ ions. The emission band peaking at 621nm originates from the 4T1-6A1 transition of Mn2+ ions after the energy transferring from Eu2+ to Mn2+ ions. When the concentrations of the Al3+, Eu2+ and Mn2+ ions were 0.8 mol, 0.1mol and 0.1mol respectively, the sample presented intense white emitting. The addition of Al ion to the host leads to a substantial change of intensity ratio between blue to green emission.

Paper Details

Date Published: 19 February 2009
PDF: 6 pages
Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 727905 (19 February 2009); doi: 10.1117/12.819442
Show Author Affiliations
Changyu Shen, China Jiliang Univ. (China)
Zhejiang Univ. (China)
Yi Yang, Zhejiang Univ. (China)
Shangzhong Jin, Zhejiang Univ. (China)
Jiangzhou Ming, HangZhou DaMing Flourescent Material Co., Ltd. (China)


Published in SPIE Proceedings Vol. 7279:
Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration
Liming Zhang; Michael J. O'Mahony, Editor(s)

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