...度1—5 1．t m且粉体形状趋于球形，而如今为了提高荧屏的寿命及承受较高电子能量的冲击，对荧光效率（Luminescence Efficiency）、亮度（Brightness）及耐腐蚀能力（ResistanttO Degradation）的要求也更为提高。
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However, the luminescence efficiency of single crystal SiC is too lowto meet the requirement of application in opto-electronics due to its indirect band-gap although it has been used for blue light emitting diodes.
利用碳化硅的宽禁带特征，已有研究者将其用于制成蓝色发光二极管。 但由于碳化硅为间接带隙半导体材料，其发光效率十分低。
参考来源 - 烧结炭化硅晶体的制备、结构及光致发光特性The luminescence efficiency of single-doped activator is not high and the brightness is inadequate. In this condition, a second activator is needed to be added.
单纯掺杂激活剂的红色发光效率不高、亮度不够理想,在这种情况下,一般需要添加辅助激活剂。
参考来源 - 稀土/过渡金属掺杂铝酸盐红色荧光粉的制备及发光性能·2,447,543篇论文数据，部分数据来源于NoteExpress
The people's studious aim is that the silicon materials can realize high luminescence efficiency and prepare efficient laser apparatus and LED.
硅基材料能否实现高效发光，从而做成高效率的激光器及发光二极管等，这是人们一直追求的目标。
Furthermore, we found that the luminescence efficiency of the deep radiative levels in the samples were also affected by rapid thermal annealing.
而且，发现在样品中的深辐射能级的荧光效率也受到快速热退火的影响。
The lamp tube after using the method for coating the powder has the advantages of high luminescence efficiency, small light wane and long service life.
用本发明方法涂粉后的灯管，发光效率高、光衰小、使用寿命长。
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