Synthesis of a Broad-Band Excited and Multicolor Tunable Phosphor Gd2SiO5:Ce3+,Tb3+,Eu3+ for Near-Ultraviolet Light-Emitting Diodes

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• 作者：Xinguo Zhang ; Yibo Chen ; Liya Zhou ; Qi Pang ; Menglian Gong
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：April 23, 2014
• 年：2014
• 卷：53
• 期：16
• 页码：6694-6698
• 全文大小：411K
• 年卷期：v.53,no.16(April 23, 2014)
• ISSN：1520-5045

文摘

Broad-band near-ultraviolet (NUV)-excited and multicolor-emitting Gd₂SiO₅:Ce³⁺,Tb³⁺,Eu³⁺ phosphors were synthesized by solid-state reaction. The emission color of the phosphors can be tuned from blue (0.153, 0.091) to green (0.325, 0.495) and eventually to red (0595, 0.370) through efficient Ce³⁺ 鈫?(Tb³⁺)_n 鈫?Eu³⁺ energy transfer. NUV light was strongly absorbed by the Ce³⁺ ions, and the excited energy was transferred to Tb³⁺ ions, which produced intense green emission peaks. Finally, the excited energy was transferred from Tb³⁺ to Eu³⁺ ions, which is attributed to red emission peaks. These multicolor tunable Gd₂SiO₅:Ce³⁺,Tb³⁺,Eu³⁺ phosphors are promising materials for applications in NUV light-emitting diodes.