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为什么晶体硅能导电

更新时间: 2020-09-19 00:00:00     

硅是一种半导体材料,但纯净的硅是不会导电的,它只是一种材料而已,必须掺入其物质才能成为半导体导电。如加入磷,硅的4个价电子与磷的5个价电子中的4个成键,剩下1个在硅,磷的空轨道上并在电压的作用下定向移动导电。

关键词: 为什么 晶体 导电

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