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    • 5. 发明授权
    • Method of fabricating non-volatile memory device
    • 制造非易失性存储器件的方法
    • US07824992B2
    • 2010-11-02
    • US12345785
    • 2008-12-30
    • Moon Sig JooHeung Jae ChoYong Soo KimWon Joon Choi
    • Moon Sig JooHeung Jae ChoYong Soo KimWon Joon Choi
    • H01L21/4763
    • H01L21/28273H01L21/3145H01L21/31645H01L21/76224H01L29/513H01L29/518H01L29/7881
    • A method of fabricating a non-volatile memory device includes: forming a tunnel insulation layer pattern and a floating gate electrode layer pattern over a semiconductor substrate; forming an isolation trench by etching an exposed portion of the semiconductor substrate so that the isolation trench is aligned with the tunnel insulation layer pattern and the floating gate electrode layer pattern; forming an isolation layer by filling the isolation trench with a filling insulation layer; forming a hafnium-rich hafnium silicon oxide layer over the isolation layer and the floating gate electrode layer pattern; forming a hafnium-rich hafnium silicon oxynitride layer by carrying out a first nitridation on the hafnium-rich hafnium silicon oxide layer; forming a silicon-rich hafnium silicon oxide layer over the hafnium-rich hafnium silicon oxynitride layer; forming a silicon-rich hafnium silicon oxynitride layer by carrying out a second nitridation on the silicon-rich hafnium silicon oxide layer; and forming a control gate electrode layer over the silicon-rich hafnium silicon oxynitride layer.
    • 制造非易失性存储器件的方法包括:在半导体衬底上形成隧道绝缘层图案和浮栅电极层图案; 通过蚀刻半导体衬底的暴露部分形成隔离沟槽,使得隔离沟槽与隧道绝缘层图案和浮栅电极层图案对准; 通过用填充绝缘层填充隔离沟槽来形成隔离层; 在隔离层和浮栅电极层图案上形成富铪铪氧化硅层; 通过在富铪铪氧化硅层上进行第一次氮化,形成富铪铪硅氮化物层; 在富铪铪硅氮化物层上形成富硅铪氧化硅层; 通过在富硅铪氧化硅层上进行第二次氮化,形成富硅铪硅氮氧化物层; 以及在所述富硅铪硅氮氧化物层上形成控制栅电极层。