摘要
本文分别研究了两个或两个以上深能级之间的耦合和非耦合两种情况所对应的光电容瞬态,根据这两种瞬态的本质差别,提出一个判别两个或两个以上深能级是否属于同一深中心的方法。它具有适用于两个以上的多个深能级的样品以及方法简单和测量时间短等优点。作为例子,将它应用于判别硅中和金有关的施主和受主两能级,结果证实它们确实是属于和金有关的同一中心,而不是分属于两个中心。
In this paper two kinds of photocapacitance transientes, corresponding respectively to two cases of coupling and uncoupling of two or more deep levels have been studied in detail. According to the great difference of the two kinds of the photocapacitance transientes, a method of determining if two or more deep levels belong to the same center has been suggested. It has some advantages that it can be used to measure the sample including more than two deep levels, the processes are quite simple, and it takes short time to finish a measurement. For example, this method has been used to judge the donor and acceptor levels related to gold in Si. The result has proved that they belong to the same center related to gold in Si.
出处
《物理学报》
SCIE
EI
CAS
CSCD
北大核心
1989年第9期1391-1399,共9页
Acta Physica Sinica
基金
国家自然科学基金
