| La_(0.5)Na_(0.5)TiO_3纳米晶的制备及光致发光研究 |
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| 引用本文： | 吴木营,张伟风,马国宏,杜祖亮,黄亚彬. La_(0.5)Na_(0.5)TiO_3纳米晶的制备及光致发光研究[J]. 化学研究, 1998, 0(1) |
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| 作者姓名： | 吴木营 张伟风 马国宏 杜祖亮 黄亚彬 |
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| 作者单位： | 东莞理工学院电子工程系!东莞，511700，河南大学物理系!开封，475001，河南大学物理系!开封，475001，河南大学物理系!开封，475001，河南大学物理系!开封，475001 |
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| 摘 要： | 以硬脂酸、硝酸镧、氢氧化钠和钛酸四丁酯为原料制备了La0 .5Na0 .5TiO3 纳米晶 ,粒度最小可达 1 4nm ,烧成温度为 50 0℃ ,低于传统固相反应的合成温度。光致发光研究表明 :用 392nm光作激发光 ,在室温下观察到了一个强的蓝光发射带 ,并且它的强度和半宽度随粒度发生明显变化。
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| 关 键 词： | La_(0.5)Na_(0.5)TiO_3 光致发光 纳米晶 硬脂酸凝胶法 |
Preparation and Photoluminescence of La_(0.5)Na_(0.5)TiO_3 Nanocrystalline |
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| Wu Muying. Preparation and Photoluminescence of La_(0.5)Na_(0.5)TiO_3 Nanocrystalline[J]. Chemical Research, 1998, 0(1) |
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| Authors: | Wu Muying |
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| Abstract: | La 0.5 Na 0.5 TiO 3 nanocrystals of various grain sizes were prepared by stearic acid gel method (SAG),using stearic acid,lanthanum nitrate,sodium hydroxide and tetrabutyl titanate as the starting materials.The temperature in the synthesis was 500℃ and that in the formation of perovskites oxide was higher than 1200℃ by conventional solid state reaction method. The nanocrystalline La 0.5 Na 0.5 TiO 3 samples were characterized by X ray diffraction and photoluminescene spectra,respectively.An emission of strong blue light was observed at room temperature,visible to naked eye at dark,upon excitation with the 392 nm line of an xenon lamp. |
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| Keywords: | La 0.5 Na 0.5 TiO 3 photoluminescence nanocrystals stearic acid gel mehthod |
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