Preparation of Eu~(3+)-doped Ta_2O_5 phosphor particles by sol-gel method

Tomoe Sanada; Yasutaka Wakai; Hiroshi Nakashita; Taichi Matsumoto; Chihiro Yogi; Shingo Ikeda; Noriyuki Wada; Kazuo Kojima

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Preparation of Eu~(3+)-doped Ta_2O_5 phosphor particles by sol-gel method

机译：溶胶-凝胶法制备Eu〜（3+）掺杂Ta_2O_5荧光粉

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Eu~(3+)-doped Ta_2O_5 phosphor particles were prepared by a sol-gel method from tantalum (V) ethoxide (Ta(OC_2H_5)_5), surfactant sorbitantrioleate (SPAN85~®), mixed solvent of C_2H_5OH and n-C_4H_9OH, and H_2O. Optical and structural properties of the particles were investigated by measuring luminescence and excitation spectra, luminescence quantum yield (QY), scanning electron microscope (SEM) images, and X-ray diffraction (XRD) patterns. The optimum conditions for preparing Eu~(3+)-doped Ta_2O_5 spherical phosphor particles were determined by changing pH value of sol solutions and the molar ratios of SPAN85/Ta(OC_2H_5)_5 and H_2O/Ta(OC_2H_5)_5. Under UV excitation, red luminescence mainly due to the _5D_0 →_7F_j U=l, 2, 4) transitions of Eu~(3+) ions was observed. The strongest red luminescence with QY = 30% was obtained in 1 Eu_2O_3-99Ta_2O_5 particles heat treated at 800 °C.

机译：通过溶胶-凝胶法，由乙醇酸钽（V）（Ta（OC_2H_5）_5），表面活性剂山梨酸三乙酸酯（SPAN85〜），C_2H_5OH和n-C_4H_9OH的混合溶剂制备Eu〜（3+）掺杂的Ta_2O_5荧光粉颗粒。和H_2O。通过测量发光和激发光谱，发光量子产率（QY），扫描电子显微镜（SEM）图像和X射线衍射（XRD）图案，研究了颗粒的光学和结构性质。通过改变溶胶溶液的pH值和SPAN85 / Ta（OC_2H_5）_5与H_2O / Ta（OC_2H_5）_5的摩尔比，确定了制备Eu〜（3+）掺杂Ta_2O_5球形荧光粉的最佳条件。在紫外线激发下，观察到红色发光主要归因于Eu〜（3+）离子的_5D_0→_7F_j U = 1，2，4）跃迁。在800℃下热处理的1 Eu_2O_3-99Ta_2O_5粒子中获得了QY = 30％的最强红色发光。

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来源
《Optical Materials》 |2010年第2期|p.164-169|共6页
作者
Tomoe Sanada; Yasutaka Wakai; Hiroshi Nakashita; Taichi Matsumoto; Chihiro Yogi; Shingo Ikeda; Noriyuki Wada; Kazuo Kojima;
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作者单位

Department of Applied Chemistry College of Life Sciences Ritsumeikcm University 1-1-1 Noji-higashi Kusatsu Shiga 525-8577 japan;

Department of Materials Science and Engineering Suzuka National College of Technology Shiroko-cho Suzuka Mie 510-0294 Japan;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类
关键词
europium ion; tantalum oxide; phosphor particlesol-gel method;

机译：ion离子氧化钽荧光粉颗粒凝胶法;

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3. Preparation, patterning and luminescent properties of nanocrystalline Gd_2O_3:A (A = Eu~(3+), Dy~(3+), Sm~(3+), Er~(3+)) phosphor films via Pechini sol-gel soft lithography [J] . M.L. Pang, J. Lin, J. Fu, Optical Materials . 2003,第3a4期

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4. Research on Particle Size and Luminescence Properties of GdBaB_9O_(16): Eu~(3+) Phosphor Prepared by Sol-gel Method [C] . Ying Xie, Linjiu Xiao, Yongjie Chen, International Conference on Materials and Products Manufacturing Technology . 2013

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Preparation of Eu~(3+)-doped Ta_2O_5 phosphor particles by sol-gel method

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