TWO KINDS OF CdS HIGH-FIELD DOMAIN MODES

Abstract
This paper presents the experimental and theoretical results about CdS high‐field domain modes in case of CE. It is observed by use of direct probe measurement of two‐dimensional potential distributions on the sample surface that there are two kinds of domain modes: In one of the modes which is observed for a considerably high‐impurity sample, the off‐axis angle θ increases with the increase of electric field. In the other mode which is observed for a low‐impurity sample, the angle θ tends to 30°. The dependence of θ on the applied field for the latter mode can be theoretically explained by use of the assumption that the domain front travels to the direction where the small signal gain becomes the maximum value.

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