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文章叙述了两种粉末燐光体的制备及直流场致发光性质。第一种是通过泥浆式工艺制得的,它是把激活剂加进予烧过的ZnS粉末中(后激活),而第二种,激活剂是在ZnS的沉澱过程中加入的(同进激活)。为了得到高亮度的发光屏,两种燐光体随后都可以包上一层铜,这种屏呈现—种电化学的形成过程。本文还详细叙述了绝对亮度和效率的测量,并讨论了发光性质和加入的杂质的关系。对泥浆式燐光体观察到有大于1的量子效率,而用同时激活的,包铜的燐光体,亮度已达到1000呎一朗伯左右。对泥浆式燐光体进行温度实验指出。在室温时有最大的效率,而降到120°K时亮度下降五个数量级。形成过程的叙述涉及间隙式发光盒(Cell)的制造并提出了和Cu的扩散过程有关的机理。予先的老化实验表明。在一定的电压下工作,光输出为10呎一朗伯时半寿命为900小时。作者相信,Mn中心的直接碰撞激发起主导作用。
The article describes the preparation of two kinds of powder calender and DC electroluminescent properties. The first is made by the mud process, which adds the activator to the calcined ZnS powder (post-activation) and the second, the activator which is added during the precipitation of the ZnS activation). In order to get a high brightness screen, both types of calender can then be coated with a layer of copper, which shows a kind of electrochemical formation. This article also describes in detail the measurement of absolute brightness and efficiency, and discusses the relationship between the luminescent properties and added impurities. A quantum efficiency of more than 1 was observed for the muddy cataracts, while the brightness of the copper-clad cataracts activated at the same time had reached about 1000 feet-1 Lambert. Mud-type calender temperature experiments indicate. It has maximum efficiency at room temperature and drops to five orders of magnitude below 120 ° K. The description of the formation process involves the fabrication of a gap-type light-emitting cell (Cell) and suggests mechanisms related to the diffusion process of Cu. Pre-aging experiments show. Working at a certain voltage, the light output is 10 feet-a half-life of 900 hours for a Lambertian. The authors believe that direct collision excitation at the center of Mn plays a dominant role.