高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (8): 1692.

• 研究论文 • 上一篇    下一篇

La0.789Yb0.20Ho0.001Tm0.01F3纳米立方体的溶剂热合成及白色上转换发光性质

德格吉呼1,2,斯琴1,孟根拉布其1   

  1. 1.  内蒙古师范大学化学与环境科学学院, 
    2.  内蒙古材料物理与化学功能材料重点实验室, 呼和浩特  010022
  • 收稿日期:2010-11-11 修回日期:2011-04-05 出版日期:2011-08-10 发布日期:2011-07-19
  • 通讯作者: 德格吉呼 E-mail:degjh@imnu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20863005)和内蒙古自然科学基金(批准号: 20080404MS0806)资助.

Solvothermal Synthesis and White Up\|conversion Luminescence Properties of La0.789Yb0.20Ho0.001Tm0.01F3 Nanocubes

DE Gejihu1,2*, SI Qin1, MENG Genlabuqi1   

  1. 1. College of Chemistry and Environment Science,
    2. Inner Mongolia Key Laboratory of Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Hohhot 010022, China
  • Received:2010-11-11 Revised:2011-04-05 Online:2011-08-10 Published:2011-07-19
  • Contact: DE Gejihu E-mail:degjh@imnu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20863005)和内蒙古自然科学基金(批准号: 20080404MS0806)资助.

摘要: 我们利用溶剂热技术制备了La0.789Yb0.20Ho0.001Tm0.01F3纳米立方.同时,利用粉末X射线衍射、透射电子显微镜和X-射线能谱来表征其组成、结构和形貌.我们用980 nm半导体二极管为光源,F-4600荧光分光光度计测量了样品的室温上转换发射光谱,结果表明样品发出红、绿和蓝色等三个发射带,其辐射跃迁分别归属于Tm3+的1G4 → 3H6(蓝色),1G4 → 3F4(红色),Ho3+的5F4 → 5I8(绿色),5F5 → 5I8(红色).样品发射的红色、绿色和蓝色光组合而发出强的白色上转换发光,它在比较宽的功率范围内符合白色光色品坐标的计算值,这种材料在三维显示、激光、光子学和生物医药等领域具有潜在的应用前景.

关键词: 溶剂热合成, LaF3纳米立方体, 白色上转换发光

Abstract: La0.789Yb0.20Ho0.001Tm0.01F3 nanocube was synthesized through a hydrothermal method. The crystal structure, composition and morphology of the sample were characterized using X-ray powder diffraction, electron microscopy, high-resolution transmission and energy dispersive X-ray spectroscopy measurements. At the same time, the up-conversion spectra of the sample were measured using F-4600 fluorescence spectrophotometer with single-wavelength diode laser (980 nm) at room temperature. The results show that emissions of red, green and blue were observed for the synthesized sample. The red, green and blue emissions were attributable to 1G4 → 3F4 (or 5F5 → 5I8), 5F5 → 5I8, and 1G4 → 3H6 transitions, respectively, the combination of which resulted in a white emission. The calculated color coordinates demonstrate that white the light can be achieved in a wide range of pumping powers. The sample obtained in the present work is believed to have potential applications in the field of displays, lasers, photonics, and biomedicine.

Key words: Hydrothermal synthesis, LaF3 Nanocube, White up\, conversion luminescence

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