defect density meaning in English
缺陷密度
Examples
- Quantitative determination of ab microscopic defect density in gallium arsenide single crystal
砷化镓单晶ab微缺险密度定量检验方法 - Testing of materials for semiconductor technology - determination of defect types and defect densities of silicon epitaxial layers
半导体工艺材料的检验.硅晶体外延层缺陷种类和缺陷密 - The dislocation - free , low defects densities crystal are acquired , in which the impurities concentration is decreased , their distribution are uniform , and the gaas crystal has high uniform and purity characteristics
利用m - lec法可以消除单晶中的位错，降低缺陷密度，降低单晶中的杂质含量，并能使杂质在晶体中的分布均匀，得到晶体均匀性、纯净度都高的gaas单晶。 - Compared to gan , which is one of the most successful wide - band semiconductor materials at present , zno is promising : high - quality zno with very low defect densities can be synthesized at much lower temperature than gan ; zno can emits light with shorter wavelength than blue light emission from gan ; zno has higher excitonic binding energy ( ~ 60mev for zno , 25mev for gan ) , which promises strong photoluminescence from bound excitonic emissions at room temperature ; meanwhile , homogeneous bulk zno is available
和gan相比， zno薄膜具有生长温度低，激子复合能高( zno ： 60mev ， gan ： 21 25mev ) ，受激辐射阈值较低，能量转换效率很高等优点。有可能实现室温下较强的紫外受激发射，制备出性能较好的探测器、发光二极管和激光二极管等光电子器件。 - With plating time going on , the nano - polycrystal gathering grows in two dimensions , and the new nano - polycrystal layer appears simultaneously on the formerly formed nano - polycrystal surface . because the boundary and defect densities in quenched and tempered 45 steel is higher than those in annealed steel , the nano - polycrystal gatherings formed at its surface at the beginning of electro - deposition are more concentrated , and then their size is smaller . the microstructure of the ni - p alloy coating has closed relation with its phosphorus content with the increase of phosphorus content , the microstructure of coating turns from nano - crystalline to the amorphous
随着施镀时间的延长，纳米晶聚晶体在横向二维生长的同时，在纳米晶聚晶体的表面上也进行着三维方向的新的一层聚晶体的生长；在调质态45钢表面，由于其具有比较高的晶界和缺陷密度，因此在沉积初期，纳米晶聚晶体的成核密度也较大，从而在二维方向聚晶体的尺度较小，镀层沉积初期表现为致密细小的鳞片状组织。