The influence of y _ 2o _ 2s : eu phosphors fluorescent spectra , chroma and luminescence intensity is systematically studied when different concentration of europium is adulterated into different phosphors by means of xrd , fluorescent spectra analysis , time - basing spectra analysis , long - persistent fluorescent spectra analysis and so on ; the influence on y2c > 2s : eu phosphors structure , luminescence intensity and long - persistent curve is investigated when different concentration of mg24 " > ti4 " 1 " is adulterated into different phosphors , finding the most suited concentration of mg2 " * ti4 " 1 " ; base on the suited concentration of mg2 + > ti4 + , the influence rule on phosphors luminescence intensity and long - persistent curve with changing of eu + concentration is also studies . at the same time , by using rare - earths metals adulteration and theory of chroma synthesis , the possibility of sensitized buildup of phosphors and the synthesis of different color long - persistent phosphors is also researched 应用x射线粉末衍射( xrd ) 、荧光光谱、时间分辨光谱及磷光体长余辉寿命测试等综合实验手段，较系统地研究了掺杂eu对荧光体y2o2s ： eu荧光体的发光光谱、色度和发光强度的影响；研究了不同mg ， ti含量对磷光体基质结构性能、发光强度与余辉曲线的影响及其适宜的掺杂浓度；基此，研究了在给定mg ， ti含量时，不同eu掺量对磷光体发光强度和余辉的影响规律；从稀土掺杂和色度合成原理分别探讨了eu的发光敏化增强和制备不同光色长余辉磷光体的可能性。
Department perfect test , which can be made into various mechanical properties such as : tension tests , strength tests slide , terminal testing ; electrical performance test items include : insulation resistance testing , contact resistance testing , testing withstand voltage , high and low test , solderability test , durability testing , vibration - resistant testing , life test 完善之测试部，能作各项机械性能测试如:拉力测试、插拨力测试、端子强度测试；电气性能测试项目计有:绝缘电阻测试、接触电阻测试、耐电压测试、高低测试、可焊性测试、耐久性测试、耐振测试、寿命测试等
After briefly describing the damage mechanism of electromigration , noises theories and signal processing methods , many kinds of experimental assessing methods of electromigration , such as the traditional mtf test , the test of changes of resistance and noise measurement , etc . , are reviewed in this paper , and its research on the technology of noises detection has been studied emphatically 本论文在简要介绍电迁移失效机理、噪声理论和1 / f信号表征方法的基础上，对各种电迁移可靠性实验评估方法(传统的寿命测试法、电阻变化测量法、噪声测量法)的特点作了分析对比。重点研究了vlsi金属互连电迁移噪声检测技术。
