稀土有机配合物电致发光研究进展

稀土配合物发射带窄, 发射光谱具有类原子光谱性质, 色纯度高(半宽峰<10 nm), 非常适合于全彩色显示. 另外, 稀土配合物发光效率高, 理论上内量子效率可达100%. 因此, 稀土配合物是全色平板显示器件中理想的发光材料之一, 研究稀土配合物电致发光性质具有重要的实际意义和理论意义. 以稀土镧系离子配合物作为发光中心的电致发光器件的研究主要集中于发光效率比较高的Eu3+, Tb3+ 以及近红外的Nd3+, Yb3+和Er3+ 离子. 分类综述了近年稀土配合物电致发光研究的成果及其进展. 总结了不同类型的铕配合物、铽配合物的电致发光特性, 证明配体对于稀土离子的敏化作用非常重要; 总结了近红外的镱、钕、铒配合物在光放大、激光技术、生物医学等方面的潜在应用价值.

Advance in Lanthanide Complexes Based Electroluminescent Devices

Lanthanide complexes are excellent luminescent materials with sharp emission bands and good color purity(FWHM<10 nm) as well as high inner-quantum efficiency(about 100%), which is helpful for fabricating bright, efficient and full-color OLEDs. So, the studies on lanthanide ion based electroluminescent devices are very important in application or theoretical researches. The researches on lanthanide ions based OLEDs mainly focus on Eu3+, Tb3+ ions, which have high emission efficiency; and Nd3+, Yb3+, Er3+ ions, which emissions are in the near infrared region. In this paper, mainly lanthanide ions based electroluminescent devices and their developments are reviewed. By dissertating EL properites of different Eu(Ⅲ) and Tb(Ⅲ) complexes, we find that luminescent properties of lanthanide ions are strongly depended on sensitization of ligands; Near-infrared lanthanide complexes(Yb3+, Nd3+, Er3+) have the potential applications in optical amplification, laser systems and biomedicine, etc..