| Sr2SiO4∶Eu2+,Nd3+的近红外发光及Eu2+→Nd3+能量传递 |
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| 作者姓名： | Yang LL Wan WJ Li JQ Meng JX |
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| 作者单位： | 1. 暨南大学化学系,广东广州,510632
2. 暨南大学纳米化学研究所,广东广州,510632 |
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| 基金项目： | 国家自然科学基金项目(30670523); 广东省自然科学基金团队项目(05200555)资助 |
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| 摘 要： | 用高温固相法制备了Sr2SiO4∶Eu2+,Nd3+发光材料,研究了样品中Eu2+对Nd3+的近红外发光敏化.发现Sr2SiO4基质中Eu2+的存在可以大大增强Nd3+的特征近红外发光.通过对样品中不同位置Eu2+荧光激发和发射光谱、荧光寿命以及Nd3+荧光光谱的研究,对Eu2+向Nd3+能量传递的机理进行了分析.在S...
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| 关 键 词： | 高温固相法 Sr2SiO4:Eu2+ Nd3+ 近红外发光 能量传递 |
Near-infrared fluorescence and energy transfer in Sr2SiO4 : Eu2+, Nd3+ |
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| Yang LL,Wan WJ,Li JQ,Meng JX.Near-infrared fluorescence and energy transfer in Sr2SiO4 : Eu2+, Nd3+[J].Spectroscopy and Spectral Analysis,2011,31(1):43-46. |
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| Authors: | Yang Li-Li Wan Wen-Jiao Li Jin-Qing Meng Jian-Xin |
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| Institution: | YANG Li-li1,WAN Wen-jiao1,LI Jin-qing1,MENG Jian-xin2* 1.Department of Chemistry,Jinan University,Guangzhou 510632,China 2.Institute of Nano-Chemistry,China |
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| Abstract: | Sr2 SiO4 : Eu2+ , Nd3+ was synthesized by solid state synthesis method, and the sensitization of Nd3+ near-infrared luminescence by Eu2+ was investigated. The characteristic near-infrared luminescence of Nd2+ in Sr2 SiO4 matrix was greatly enhanced by co-doping of Eu2+. The mechanism of energy transfer from Eu2+ to Nd3+ was analyzed through investigation of fluorescence excitation and emission spectra, and fluorescence lifetime. Excited Eu2+ (II) transfers energy effectively to Nd3+ through non-radiative energy transfer process in Sr2SiO4, resulting in greatly enhanced near-infrared luminescence of Nd3+, while sensitization of Nd3+ by Eu2+ (I) was achieved by the way of Eu2+ (II). |
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| Keywords: | Solid state method Sr2SiO4:Eu2 Nd3 Near-infrared luminescence Energy transfer |
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