Luminescent characteristics of Ba3Y2(BO3)4:Eu3+ phosphor for white LED
来源期刊：JOURNAL OF RARE EARTHS2008年第1期
论文作者：YANG Zhiping LI Panlai WANG Zhijun PANG Libin GUO Qinglin
Key words：white LED; Ba3Y2(BO3)4:Eu3+; luminescent characteristics; rare earths;
Abstract: The Ba3Y2(BO3)4:Eu3+ phosphor was synthesized using a high temperature solid-state reaction method and the luminescent characteristics were investigated. The emission spectrum exhibited one strong red emission at 613 nm, corresponding to the electric dipole 5D0-7F2 transition of Eu3+, under 365 nm excitation. The excitation spectrum of 613 nm indicated that the Ba3Y2(BO3)4:Eu3+ phosphor was effectively excited by ultraviolet (UV) (254, 365 and 400 nm) and blue (470 nm) light. The effect of Eu3+ concentration on the 613 nm emission of the Ba3Y2(BO3)4:Eu3+ phosphor was measured. The results showed that the emission intensity increased with increasing Eu3+ concentration, and then decreased. The CIE color coordinates of Ba3Y2(BO3)4:Eu3+ phosphor were x=0.641 and y=0.359 at 15 mol.% Eu3+.
YANG Zhiping1，LI Panlai1，WANG Zhijun1，PANG Libin2，GUO Qinglin1
(1.College of Physics Science & Technology, Hebei University, Baoding 071002, China;
2.Foreign Language Teaching & Researching Department, Hebei University, Baoding 071002, China)
Abstract:The Ba3Y2(BO3)4:Eu3+ phosphor was synthesized using a high temperature solid-state reaction method and the luminescent characteristics were investigated. The emission spectrum exhibited one strong red emission at 613 nm, corresponding to the electric dipole 5D0-7F2 transition of Eu3+, under 365 nm excitation. The excitation spectrum of 613 nm indicated that the Ba3Y2(BO3)4:Eu3+ phosphor was effectively excited by ultraviolet (UV) (254, 365 and 400 nm) and blue (470 nm) light. The effect of Eu3+ concentration on the 613 nm emission of the Ba3Y2(BO3)4:Eu3+ phosphor was measured. The results showed that the emission intensity increased with increasing Eu3+ concentration, and then decreased. The CIE color coordinates of Ba3Y2(BO3)4:Eu3+ phosphor were x=0.641 and y=0.359 at 15 mol.% Eu3+.
Key words:white LED; Ba3Y2(BO3)4:Eu3+; luminescent characteristics; rare earths;
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