Synthesis and luminous characteristics of Ba3CaSi2-xAlxO8:Eu, Mn phosphor for white LED

Changyu Shen; Yi Yang; Shangzhong Jin; Jiangzhou Ming

doi:10.1117/12.819442

19 February 2009 Synthesis and luminous characteristics of Ba₃CaSi_2-xAl_xO₈:Eu, Mn phosphor for white LED

Changyu Shen, Yi Yang, Shangzhong Jin, Jiangzhou Ming

Proceedings Volume 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration; 727905 (2009) https://doi.org/10.1117/12.819442
Event: Photonics and Optoelectronics Meetings, 2008, Wuhan, China

Abstract

Ba₃CaSi_1.7Al_0.3O₈: Eu, Mn white-emitting phosphor was prepared by solid reaction and X-ray powder diffraction (XRD) analysis confirmed the formation of Ba₃CaSi_1.7Al_0.3O₈: 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.

Citation Download Citation

Changyu Shen, Yi Yang, Shangzhong Jin, and Jiangzhou Ming "Synthesis and luminous characteristics of Ba₃CaSi_2-xAl_xO₈:Eu, Mn phosphor for white LED", Proc. SPIE 7279, Photonics and Optoelectronics Meetings (POEM) 2008: Optoelectronic Devices and Integration, 727905 (19 February 2009); https://doi.org/10.1117/12.819442

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