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    • 9. 发明申请
    • GAS PHASE OXIDE REMOVAL AND PASSIVATION OF GERMAINIUM-CONTAINING SEMICONDUCTORS AND COMPOUND SEMICONDUCTORS
    • 气相氧化物去除和钝化含镓的半导体和化合物半导体
    • WO2016007733A1
    • 2016-01-14
    • PCT/US2015/039726
    • 2015-07-09
    • TOKYO ELECTRON LIMITEDTOKYO ELECTRON U.S. HOLDINGS, INC.
    • GAYLORD, Richard H.BARNETT, Joel
    • H01L21/302
    • H01L21/02112H01L21/02046H01L21/0234H01L21/02345H01L21/306H01L21/31116H01L21/324
    • A method for gas phase oxide removal and passivation of germanium-containing semiconductors and compound semiconductors are disclosed in various embodiments. According to one embodiment of the invention, a method is provided for processing a semiconductor substrate. The method includes providing a substrate containing a germanium-containing semiconductor or a compound semiconductor, and exposing the substrate to a process gas containing a sulfur-containing gas and a nitrogen-containing gas that passivates a surface of the germanium-containing semiconductor or the compound semiconductor with sulfur. According to another embodiment, the germanium-containing semiconductor or the compound semiconductor has an oxidized layer thereon and the exposing to the process gas removes the oxidized layer from the substrate. According to another embodiment, the substrate may be treated with hydrogen fluoride (HF) gas and ammonia (NH 3 ) gas to remove the oxidized layer from the substrate before passivating the germanium-containing semiconductor or compound semiconductor with sulfur.
    • 在各种实施方案中公开了含锗半导体和化合物半导体的气相氧化物去除和钝化的方法。 根据本发明的一个实施例,提供了一种用于处理半导体衬底的方法。 该方法包括提供包含含锗半导体或化合物半导体的衬底,并将衬底暴露于含有含锗气体和含氮气体的工艺气体中,所述含氮气体和含氮气体钝化含锗半导体或化合物的表面 半导体与硫磺。 根据另一实施例,含锗半导体或化合物半导体在其上具有氧化层,并且暴露于工艺气体将氧化层从衬底去除。 根据另一个实施方案,可以用氟化氢(HF)气体和氨(NH 3)气体处理衬底,以在用硫钝化含锗半导体或化合物半导体之前从衬底去除氧化层。