Semi-conductor component with contact hole

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357 234, 357 86, 357 91, H01L 2348

Patent

active

047853441

ABSTRACT:
In power MOSFETs the source zone (5) and the channel zone (4) must be contacted by a common contact (15). If the contact material is aluminum and if the channel zone (4) is n-conductive (p-channel MOSFET), a surface region (8) of the channel zone (4) is additionally n-doped through an opening (6) in the source zone (5) thereabove with a dose of .gtoreq.5.times.10.sup.14 atoms cm.sup.-2. The aluminum contact (15) contacts the channel zone (4) at this region (8) thereby forming a purely ohmic contact to the channel zone.

REFERENCES:
patent: 4035826 (1977-07-01), Morton et al.
patent: 4443931 (1984-04-01), Baliga
patent: 4502069 (1985-02-01), Schuh
patent: 4516143 (1985-05-01), Love

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