Synthesis of ultra fine particle phosphors with high performance by sol-gel method

该项目的研究人员一直在研究超精细粒子磷酸盐的发展，以实现现场发射显示器（FEDs）的高性能。In this project， the phosphors such as SrTiO D23イイD2：Pr， Al， YイD22イD2S：Eu ， SnOイD23イD2：Eu， TiOイD22：Eu， YイD22-XイD2ZnイD2OイD23イD2：Eu etc. were prepared with fine particle sizes by sol-gel. To obtain high luminance from SrTiOイD23イD2：Prred Emitting，将Al添加到女主人是必需的。当Al addition为30 mol%时，哪个是在此调查中的最佳选择，SrTiO y D23 y D2：Pr， Al phosphor显示亮度为34 cd/m y D12 y D1和CIE颜色协调的（0.681， 0.314）下的异常与2 kV和108 μA/cm y D12 y D1 Cathode。这是第一次展示Al添加效应的机制，其中（1）几乎所有添加的Al分布都是Al D22 Y D2 O Y D23 Y D2通过特定的SEM图像观察到的磷表面， （2） Al引入SrTiO Y D23 Y D2批量固定 ... More Publes for the improvement of luminance by forming 4 coordination observed by nuclear magnetic resonance measurement。YイイD22イD22イイD2S：Eu phosphor with particle size smaller than 0. 5·m could be synthesized successfully。市场上的粒子大小比磷酸盐小。Moreover， the phosphor shows a luminance of 320 cd/mイルD12イルD1 color coordinates of （0. 648，0. 342） under excitation with 1 kV and 60/A/cmイルD13イルD1。“亮度比商业化的先知要高。”It was found for the synthesis of SnOイイD22イエD2：Eu phosphor that the phosphor with smaller particle size and showing luminance with 20 times was successfully obtained using ethanol as solvent for SnC1イD24イイD2 and EuClイD23イエD2 than the phosphor prepared in water。It was found for the first time that the crystallinity and luminance of the YイイD22イイD23イイD2：Eu phosphor increases considerably by the addition of Zn。phosphor added with 5 mol% Zn showed a luminance of 1000 cd/mイイD12イエD1 and CIE color cordinates of （0.643， 0，345） under excitation with 2 kV mid60 mA/cmイイD12イエD1， and those data are promising for the commercial use。Less（低）

Investigators of this project have been studying on the development of ultra fine particle phosphors with high performance for field emission displays (FEDs). In this project, the phosphors such as SrTiOィイD23ィエD2:Pr, Al, YィイD22ィエD2OィイD22ィエD2S:Eu , SnOィイD23ィエD2:Eu, TiOィイD22ィエD2:Eu, YィイD22-XィエD2ZnィイD2XィエD2OィイD23ィエD2:Eu etc. were prepared with fine particle sizes by sol-gel.To obtain high luminance from SrTiOィイD23ィエD2:Pr red emitting, the addition of Al to the phosphor is necessary. When the Al addition is 30 mol%, which is optimum in this investigation, the SrTiOィイD23ィエD2:Pr, Al phosphor shows a luminance of 34 cd/mィイD12ィエD1 and CIE color coordinates of (0.681, 0.314) under excitation with 2 kV and 108 μA/cmィイD12ィエD1 cathode. It was shown for the first time for the mechanism of the effect of the Al addition that (1) almost all of the added Al distribute as AlィイD22ィエD2OィイD23ィエD2 on the phosphor surface observed by specific X-my image of SEM, (2) Al introduced into SrTiOィイD23ィエD2 bulk cont … More ributes for the improvement of luminance by forming 4 coordination observed by nuclear magnetic resonance measurement.YィイD22ィエD2OィイD22ィエD2S:Eu phosphor with particle size smaller than 0.5 μm could be synthesized successfully. The particle size is smaller than that of phosphor on the market. Moreover, the phosphor shows a luminance of 320 cd/mィイD12ィエD1 color coordinates of (0.648, 0.342) under excitation with 1 kV and 60 μA/cmィイD13ィエD1. The luminance is higher than that of commercial phosphor. It was found for the synthesis of SnOィイD22ィエD2:Eu phosphor that the phosphor with smaller particle size and showing luminance with 20 times was successfully obtained using ethanol as solvent for SnC1ィイD24ィエD2 and EuClィイD23ィエD2 than the phosphor prepared in water. It was found for the first time that the crystallinity and luminance of the YィイD22ィエD2OィイD23ィエD2:Eu phosphor increases considerably by the addition of Zn. The phosphor added with 5 mol% Zn showed a luminance of 1000 cd/mィイD12ィエD1 and CIE color cordinates of (0.643, 0,345) under excitation with 2 kV mid 60 mA/cmィイD12ィエD1, and those data are promising for the commercial use. Less