Patent ID: 6197667
Filing Date: 2001-03-06
Classification: H01L

Abstract:
A method for manufacturing a Schottky contact having high-temperature proof and oxidation resistance, comprising the following steps:(a) dipping a composite semiconductor substrate into a solution containing phosphorus pentasulphide/ammonia sulphide (P.sub.2 S.sub.5 /INH.sub.4).sub.2 S.sub.x) with a proportion of 0.05 g/ml for a dipping time of several minutes, and then drying said composite semiconductor substrate with nitrogen;(b) performing a fluoride treatment on said composite semiconductor substrate;(c) repeating steps (a)-(b) for several times; and(d) performing a UV ray treatment on said composite semiconductor substrate after step (c) for 3 mins. to form a thin sulphur fluoride/phosphorus fluoride layer.