半导体中的输运过程

半导体的输运性质直接决定了半导体器件的性能，如响应时间、截止频率等，因此与半导体器件发展的同时，人们对半导体的输运性质进行了广泛的实验和理论研究。文章根据半导体物理的发展历史，分体半导体输运、调制掺杂异质结输运、超晶格微带输运、弹道输运以及介质系统输运等几个方面来讨论这一问题。

Transport Processes in Semiconductors

The transport properties of semiconductors decide directly the perfor- mance of semiconductor devices, for instance, their response time, cut-off frequency, etc. Hence, in the history of device development, transport properties have been studied widely both experimentally and theoretically with regard to the historical development of semicon- ductor physics, this paper will discuss transport in bulk semiconductors and modulated doped heterojunctions, miniband transport in superlattices, ballistic transport, and trans- port in mesoscopic systems.