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硅无疑是现在研究得最多的一种元素。如果没有硅,整个微电子学将不可想象。然而几年前这种材料的利用似乎已经到顶。进一步发展,尤其是对于日新月异的光电子学应用,象光计算机,好象仅仅是制造比较昂贵和复杂,最终可提供不含砷化镓之类剧毒化合物半导体。因为与硅相比,这种直接半导体加上电压便会发光。在硅上人们至今还未观察到这种现象,虽然科学家致力探索40多年。直到1990年9月,始见英国人 Leigh T.Canham 关于用激光成功地激发硅发光的报导。此后其他科学家也证实了这一现象,于是
Silicon is undoubtedly the most studied now an element. Without silicon, the entire microelectronics will be unthinkable. However, the use of this material seems to have peaked years ago. Further development, especially for ever-changing optoelectronics applications, like light computers, seems to be more costly and complicated to manufacture, ultimately providing highly toxic compound semiconductors, such as gallium arsenide. Because compared with silicon, this direct semiconductor plus voltage will light. This phenomenon has not been observed on silicon so far, although scientists are dedicated to exploring more than 40 years. It was not until September 1990 that British Leigh T. Canham’s report on the successful excitation of silicon light by a laser was reported. Since then, other scientists have confirmed this phenomenon, so