光电子技术, 2011, 31 (4): 263, 网络出版: 2012-04-16  

Eu3+掺杂钙钛矿结构的MSnO3(M=Ca,Sr,Ba)发光粉的发光特性研究

A Study on the Luminescent Property of Eu3+-doped MSnO3(M=Ca,Sr,Ba) Perovskite
作者单位
1 汕头大学 物理系, 广东 汕头 515063
2 汕头超声显示器有限公司, 广东 汕头 515041
摘要
利用高温固相反应法合成了MSnO3∶ Eu3+ (M=Ca,Sr,Ba)发光粉末样品,采用X射线衍射技术和荧光光谱等测试手段对样品的结构、固相反应机理及发光特性进行了研究。结果表明:Eu3+离子的掺杂未明显改变MSnO3(M=Ca,Sr,Ba)的晶体结构。荧光光谱测试显示Ca0.98Eu0.02SnO3样品的发射以电偶极跃迁5D0-7F2的红光发射为主,荧光寿命测试结果表明Ca0.98Eu0.02SnO3样品中存在能量转移现象。Sr0.98Eu0.02SnO3样品的发射以5D0-7F1磁偶极跃迁为主。Ba0.98Eu0.02SnO3样品的发射也以磁偶极跃5D0-7F1为主,但是Ba0.98Eu0.02SnO3发光比Ca0.98Eu0.02SnO3弱很多。简言之,MSnO3∶Eu3+(M=Ca,Sr,Ba)的发光能力与其晶格对称性、键能键长,带隙宽度有关。
Abstract
MSnO3:Eu3+(M=Ca,Sr,Ba) powder samples were prepared with high temperature solid-state reaction. Structures, solid-state reaction mechanism and luminescence properties were investigated respectively with testing, such as XRD, fluorescence spectra and so on. The results of X-ray diffraction testing indicate that Eu3+ions doping changes the crystal structure of MSnO3 (M=Ca,Sr,Ba) slightly. The fluorescence spectra testing shows that emission of Ca0.98Eu0.02SnO3sample is mainly from red-light emitting dominated 5D0-7F2 electric dipole transition while the fluorescence lifetime testing results witnesse the energy transfer phenomenon. The emission of Sr0.98Eu0.02SnO3sample is dominated with 5D0-7F1 magnetic dipole transition as well as Ba0.98Eu0.02SnO3but with a much less luminescence intensity. The luminescence capacity of MSnO3:Eu3+(M=Ca,Sr,Ba) lattice relates to the lattice symmetry, bond-energy, bond-length and the width of the band gap.Key words: high temperature solid-state reaction method; MSnO3:Eu3+(M=Ca,Sr,Ba); luminescent property.

邱桂明, 吴魏雄, 周涛. Eu3+掺杂钙钛矿结构的MSnO3(M=Ca,Sr,Ba)发光粉的发光特性研究[J]. 光电子技术, 2011, 31(4): 263. Qiu Guiming, Wu Weixiong, Zhou Tao. A Study on the Luminescent Property of Eu3+-doped MSnO3(M=Ca,Sr,Ba) Perovskite[J]. Optoelectronic Technology, 2011, 31(4): 263.

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