Radiation source, lithographic apparatus and device manufacturing method
    74.
    发明授权
    Radiation source, lithographic apparatus and device manufacturing method 失效
    辐射源,光刻设备和器件制造方法

    公开(公告)号:US08416391B2

    公开(公告)日:2013-04-09

    申请号:US12809427

    申请日:2008-12-19

    IPC分类号: G03B27/54 G21G4/00

    CPC分类号: H05G2/003 H05G2/005

    摘要: A radiation source is configured to generate radiation. The radiation source includes a first electrode and a second electrode configured to produce an electrical discharge during use to generate radiation-emitting plasma from a plasma fuel. The radiation source also includes a fuel supply configured to supply a plasma fuel to a fuel release area that is associated with the first electrode and the second electrode, and a fuel release configured to induce release of fuel, supplied by the fuel supply, from the fuel release area. The fuel release area is spaced-apart from the first electrode and from the second electrode.

    摘要翻译: 辐射源被配置成产生辐射。 辐射源包括第一电极和第二电极,其被配置为在使用期间产生放电以从等离子体燃料产生辐射发射等离子体。 辐射源还包括配置成将等离子体燃料供应到与第一电极和第二电极相关联的燃料释放区域的燃料供应,以及燃料释放装置,其被配置为引起由燃料供应源供应的燃料的释放 燃油释放区。 燃料释放区域与第一电极和第二电极间隔开。

    Radiation source, lithographic apparatus and device manufacturing method
    78.
    发明授权
    Radiation source, lithographic apparatus and device manufacturing method 失效
    辐射源,光刻设备和器件制造方法

    公开(公告)号:US08232537B2

    公开(公告)日:2012-07-31

    申请号:US12540542

    申请日:2009-08-13

    IPC分类号: H05G2/00

    摘要: A radiation source for generation of extreme ultraviolet radiation or use in high resolution lithography includes a plasma formation site where fuel is contacted by a radiation beam to form a plasma generating EUV radiation. A mirrored collector collects and reflects the EUV radiation generated at a first focus towards a second focus. A contamination barrier is positioned such the periphery of the contamination barrier does not occlude more than 50% of the solid angle subtended by the mirror at the second focus, such that EUV radiation reflected by the collector mirror is not excessively attenuated by passing through the contamination barrier. The contamination barrier serves to trap fuel material such as ions, atoms, molecules or nanodroplets from the plasma to prevent their deposition onto the collector mirror where they reduce the mirror's effective lifetime.

    摘要翻译: 用于产生极紫外辐射或用于高分辨率光刻的辐射源包括等离子体形成位置,其中燃料通过辐射束接触以形成等离子体产生的EUV辐射。 镜像收集器收集并反射在第一焦点处产生的EUV辐射朝向第二焦点。 定位污染屏障,污染屏障的周边不会堵塞在第二焦点处由反射镜对着的立体角的50%以上,使得由集光镜反射的EUV辐射不会通过污染物过度衰减 屏障。 污染屏障用于从等离子体中捕获诸如离子,原子,分子或纳米液体的燃料,以防止它们沉积到收集器反射镜上,从而减少镜的有效寿命。