Invention Grant
- Patent Title: Removal of impurities from semiconductor device layers
- Patent Title (中): 从半导体器件层去除杂质
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Application No.: US12434441Application Date: 2009-05-01
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Publication No.: US08227299B2Publication Date: 2012-07-24
- Inventor: Eddy Simoen , Jan Vanhellemont
- Applicant: Eddy Simoen , Jan Vanhellemont
- Applicant Address: BE Leuven BE Brussels
- Assignee: IMEC,Umicore
- Current Assignee: IMEC,Umicore
- Current Assignee Address: BE Leuven BE Brussels
- Agency: Knobbe Martens Olson & Bear LLP
- Main IPC: H01L21/335
- IPC: H01L21/335 ; H01L21/322

Abstract:
A method for removing impurities from at least one semiconductor device layer during manufacturing of a semiconductor device is disclosed. The semiconductor device layer has a compound semiconductor material and/or germanium. Each heating process performed during the manufacturing of the semiconductor device after provision of the semiconductor device layer has 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. In one aspect, the method includes providing a germanium gettering layer with a higher solubility for the impurities than the semiconductor device layer. The germanium gettering layer is provided at least partly in direct or indirect contact with the at least one semiconductor device layer, such that impurities can diffuse from the at least one semiconductor device layer to the germanium gettering layer.
Public/Granted literature
- US20090273010A1 REMOVAL OF IMPURITIES FROM SEMICONDUCTOR DEVICE LAYERS Public/Granted day:2009-11-05
Information query
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