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DEPLETION APPROXIMATION ANALYSIS OF THE DIFFERENTIAL CAPACITANCE-VOLTAGE CHARACTERISTICS OF AN MOS STRUCTURE WITH NONUNIFORMLY DOPED SEMICONDUCTORS
被引:21
作者:
NISHIDA, M
机构:
[1] IC Department Semiconductor Division, Tokyo Sanyo Electric Company, Ltd., Oizumi-cho, Ora-gun, Gumma-ken
关键词:
D O I:
10.1109/T-ED.1979.19549
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
The semiconductor equations relating the differential capacitance-voltage characteristics of an MOS structure with nonuniformly doped semiconductors have been derived by using the depletion approximation based on the rigorous definition of the depletion layer width. The relationship between the depletion layer width and the differential capacitance is shown to be the same as the one derived using classical model that is sometimes taken for granted. At the same time, it is shown that the differential capacitance arises from the introduction (or removal) of majority carriers from the abrupt space-charge edge. Expressions derived using this model that are necessary to obtain the impurity distributions are the same as those developed by Kennedy et al. The present model will permit the explicit analysis of subthreshold characteristics in ion-implanted MOSFET's even for non-space-charge neutral profiles. Copyright © 1979 by The Institute of Electrical and Electronics Engineers, Inc.
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页码:1081 / 1085
页数:5
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