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    • 1. 发明申请
    • METHOD AND APPARATUS FOR GERMANIUM TIN ALLOY FORMATION BY THERMAL CVD
    • 用于通过热CVD形成的锗合金合金的方法和装置
    • US20130280891A1
    • 2013-10-24
    • US13784109
    • 2013-03-29
    • YIHWAN KIMYi-Chiau HuangErrol Antonio C. Sanchez
    • YIHWAN KIMYi-Chiau HuangErrol Antonio C. Sanchez
    • H01L21/02
    • H01L21/0262C30B25/02C30B29/06C30B29/08C30B29/52H01L21/02524H01L21/02532H01L21/02535
    • A method and apparatus for forming semiconductive semiconductor-metal alloy layers is described. A germanium precursor and a metal precursor are provided to a chamber, and an epitaxial layer of germanium-metal alloy, optionally including silicon, is formed on the substrate. The metal precursor is typically a metal halide, which may be provided by evaporating a liquid metal halide, subliming a solid metal halide, or by contacting a pure metal with a halogen gas. A group IV halide deposition control agent is used to provide selective deposition on semiconductive regions of the substrate relative to dielectric regions. The semiconductive semiconductor-metal alloy layers may be doped, for example with boron, phosphorus, and/or arsenic. The precursors may be provided through a showerhead or through a side entry point, and an exhaust system coupled to the chamber may be separately heated to manage condensation of exhaust components.
    • 描述了用于形成半导体半导体 - 金属合金层的方法和装置。 将锗前体和金属前体提供到室,并且在衬底上形成任选地包含硅的锗 - 金属合金外延层。 金属前体通常是金属卤化物,其可以通过蒸发液体金属卤化物,升华固体金属卤化物或通过使纯金属与卤素气体接触来提供。 使用IV族卤化物沉积控制剂来相对于电介质区域在衬底的半导体区域上提供选择性沉积。 半导体半导体 - 金属合金层可以掺杂例如硼,磷和/或砷。 前体可以通过喷头或通过侧入口提供,并且耦合到室的排气系统可以被单独加热以管理排气部件的冷凝。