Patent ID: 8227299
Filing Date: 2012-07-24
Classification: H01L,Y10S

Abstract:
1. A method of removing impurities from at least one semiconductor device layer during manufacturing of a semiconductor device, the at least one semiconductor device layer comprising a compound semiconductor material and/or germanium, and each heating process performed during the manufacturing of the semiconductor device after provision of the at least one semiconductor layer having a low thermal budget determined by temperatures equal to or lower than about 900° C. and time periods equal to or lower than about 5 minutes, wherein the method comprises: providing a germanium gettering layer with a higher solubility for the impurities than the semiconductor device layer, the germanium gettering layer being provided at least partly in direct or indirect contact with the at least one semiconductor device layer, such that impurities diffuse from the at least one semiconductor device layer to the germanium gettering layer.