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    • 30. 发明授权
    • Method for fabricating MOS transistors
    • 制造MOS晶体管的方法
    • US07803702B2
    • 2010-09-28
    • US12189203
    • 2008-08-11
    • Kuo-Chih LaiYi-Wei ChenNien-Ting HoTeng-Chun Tsai
    • Kuo-Chih LaiYi-Wei ChenNien-Ting HoTeng-Chun Tsai
    • H01L21/28
    • H01L21/28518H01L29/165H01L29/6659H01L29/66636
    • A method for fabricating metal-oxide transistors is disclosed. First, a semiconductor substrate having a gate structure is provided, in which the gate structure includes a gate dielectric layer and a gate. A source/drain region is formed in the semiconductor substrate, and a cleaning step is performed to fully remove native oxides from the surface of the semiconductor substrate. An oxidation process is conducted to form an oxide layer on the semiconductor substrate and the oxide layer is then treated with fluorine-containing plasma to form a fluorine-containing layer on the surface of the semiconductor substrate. A metal layer is deposited on the semiconductor substrate thereafter and a thermal treatment is performed to transform the metal layer into a silicide layer.
    • 公开了一种用于制造金属氧化物晶体管的方法。 首先,提供具有栅极结构的半导体衬底,其中栅极结构包括栅极介电层和栅极。 在半导体衬底中形成源极/漏极区域,并且执行清洁步骤以从半导体衬底的表面中完全去除天然氧化物。 进行氧化处理以在半导体衬底上形成氧化物层,然后用含氟等离子体处理氧化物层,以在半导体衬底的表面上形成含氟层。 此后,在半导体衬底上沉积金属层,并进行热处理以将金属层转变成硅化物层。