Citation: WU Jiang, ZHANG Ping, JIANG Chun-Dong, QIU Ze-Zhong. Preparation and Luminescence Properties of Green Phosphors Ca₃Y₂Si₃O₁₂:Tb³⁺, Ce³⁺[J]. Chinese Journal of Inorganic Chemistry, ;2015, (6): 1201-1206. doi: 10.11862/CJIC.2015.136 shu

Preparation and Luminescence Properties of Green Phosphors Ca₃Y₂Si₃O₁₂:Tb³⁺, Ce³⁺

1.
College of Material Science and Engineering, Sichuan University, Chengdu 610065, China

Received Date: 22 December 2014
Available Online: 31 March 2015

The green-emitting Ca₃Y_2-x-ySi₃O₁₂:xTb³⁺, yCe³⁺ silicate phosphors were synthesized by a high temperature solid-state method. The principal crystalline of the samples is Ca₃Y₂Si₃O₁₂, which is belonging to the monoclinic system. All the phosphors can be effectively excited in the range of 300 nm to 450 nm, and emit green light. Excited by 370 nm, the emission peaks mainly locate at 490 nm (⁵D₄→⁷F₆) 544 nm(⁵D₄→⁷F₅), 585 nm(⁵D₄→⁷F₄) and 621 nm(⁵D₄→⁷F₃). The effect of sintering conditions, doping concentration and Ce³⁺ co-doping was studied on the luminescence properties of the phosphors. The sample twice sintered for 6 h at 1400 ℃ shows the best performance. The optimum doping content of Tb³⁺ is x(Tb³⁺)=20mol%. The emission intensity of the phosphors can be increased by the Ce³⁺ ion co-doping, and the test shows that the best doping amount is 4mol%. The result confirms the presence of Ce³⁺→Tb³⁺ energy transfer.
- luminescence;doping;solid-state reactions;green phosphors
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通讯作者: 陈斌, bchen63@163.com

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沈阳化工大学材料科学与工程学院沈阳 110142

Preparation and Luminescence Properties of Green Phosphors Ca3Y2Si3O12:Tb3+, Ce3+

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通讯作者: 陈斌, bchen63@163.com

Preparation and Luminescence Properties of Green Phosphors Ca₃Y₂Si₃O₁₂:Tb³⁺, Ce³⁺