Abstract:
A detector for extreme ultraviolet (EUV) energy uses incidence reflectance of the EUV beam off the detector to both capture a small but controllable fraction of the EUV energy and to redirect most of the energy to its target. In one embodiment, a reflective coating of material on a sensor surface is used. In another embodiment, a multi-layer reflector on a sensor is used. A method of making the multi-layer reflector/sensor is also described.
Abstract:
A multi-layer mirror includes on top of the multi-layer mirror a spectral purity enhancement layer, for example for application in an EUV lithographic apparatus. This spectral purity enhancement layer includes a first spectral purity enhancement layer, but between the multi-layer mirror and first spectral purity enhancement layer there may optionally be an intermediate layer or a second spectral purity enhancement layer and intermediate layer. Hence, multi-layer mirrors with the following configurations are possible: multi-layer mirror/first spectral purity enhancement layer; multi-layer mirror/intermediate layer/first spectral purity enhancement layer; and multi-layer mirror/second spectral purity enhancement layer/intermediate layer/first spectral purity enhancement layer. The spectral purity of normal incidence radiation may be enhanced, such that DUV radiation is diminished relatively stronger than EUV radiation.
Abstract:
A method for repairing mask-blank defects uses repair-zone compensation. Local disturbances are compensated over the post-defect-repair repair-zone by altering a portion of the absorber pattern on the surface of the mask blank. This enables the fabrication of defect-free (since repaired) X-ray Mo—Si multilayer mirrors. Repairing Mo—Si multilayer-film defects on mask blanks is a key for the commercial success of EUVL. It is known that particles are added to the Mo—Si multilayer film during the fabrication process. There is a large effort to reduce this contamination, but results are not sufficient, and defects continue to be a major mask yield limiter.
Abstract:
Methods to manufacture contaminant-gettering materials in the surface of EUV optics are described herein. An optical element is patterned and a contaminant-gettering material is formed on a surface of the optical element. In one embodiment, a photoresist is deposited on an optical coating on the optical element. Trenches are formed in the optical coating. The gettering agent is formed into the trenches over the photoresist. Next, the photoresist is removed from the optical coating to expose the gettering agent in the trenches. For another embodiment, patches of a nanotube forest having a gettering agent are formed in designated areas of an optical element. The gettering agent of the patches may be a plurality of carbon nanotubes. The optical coating is formed on a substrate between patches of the gettering agent.
Abstract:
A surface treating method of forming a coating layer on a base material, comprising conducting a plasma processing under an atmospheric pressure for the base material so as to form a coating layer on the base material having at least one of a curved surface and an uneven surface.
Abstract:
A method for producing a radiation image conversion panel containing the steps of: forming a stimulable phosphor layer on a substrate by a vapor deposition method to prepare a phosphor panel; hydrating the phosphor panel under a relative humidity of 30 to 60%; and sealing the phosphor panel with a moisture-proof protective film to prepare the radiation image conversion panel.
Abstract:
Damage-resistant coatings are provided on radiation-exposed surfaces of EUV lithographic components. The diamond coating provides resistance to particle impingement, cleaning processes, and degradation due to high temperatures. The diamond coating is beneficial when deposited on the reflecting surface of an EUV Si/Mo multilayer mirror, grazing collector incidence mirror, the reflecting surface of an EUV Si/Mo multilayer reflective mask, and radiation-exposed surfaces of EUV debris shield. The diamond coating provides longer lasting EUV components.
Abstract translation:在EUV光刻部件的辐射暴露表面上提供耐损伤涂层。 金刚石涂层提供对颗粒冲击,清洁过程和由于高温导致的退化的抵抗力。 当沉积在EUV Si / Mo多层反射镜,放电收集器入射镜,EUV Si / Mo多层反射掩模的反射表面和EUV碎片屏蔽的辐射暴露表面时,金刚石涂层是有益的。 金刚石涂层提供更持久的EUV组件。
Abstract:
An extreme (EUV) lithography system includes optical elements which vary the wavelengths of radiation as a function of the angle of incidence on a mask to maximize the reflected radiation intensity.
Abstract:
The invention provides an optical reflector element (1) for a beam of X-rays (Rx) or of gamma-rays or of high-energy particles at grazing incidence, the element being constituted by a stack of superposed silicon plates (10-12). Each plate (10-12) has a reflecting top face (101-121) possibly coated with a metallic film, a multilayer or a dispersive grating and a bottom face carrying ribs (100-120) forming spacers between two successive plates (10-11, 11-12), and defining determined spacing between two successive reflecting faces (101-121). The invention also provides optical instruments comprising several such elements, in particular a type I Wolter telescope comprising two mirrors in tandem having respective paraboloid and hyperboloid surfaces of revolution or a conical approximation thereof or
Abstract translation:本发明提供了一种用于X射线束(R x X x)或γ射线或掠射入射的高能粒子的光学反射器元件(1),该元件由叠层构成 的重叠硅板(10-12)。 每个板(10-12)具有可能涂覆有金属膜,多层或分散光栅的反射顶面(101-121)和在两个连续板(10〜12)之间形成间隔件的肋(100-120)的底面, 并且在两个连续的反射面(101-121)之间限定确定的间隔。 本发明还提供了包括几个这样的元件的光学仪器,特别是包括串联的两个反射镜的I型沃尔特望远镜,其具有相应的旋转抛物面和双曲面的旋转曲面或其锥形近似,
Abstract:
Ion-beam based deposition technique are provided for the planarization of pit and scratch defects in conjunction with particle defects. One application of this planarization technique is to mitigate the effects of pits and scratches and particles on reticles for extreme ultraviolet (EUV) lithography. In the planarization process, thin Si layers are successively deposited and etched away where the etching is directed at angles well away from normal incidence to the substrate to planarize pits and scratches without causing the particle defects to get too large; this is followed by a normal incidence etching process sequence designed primarily to planarize the particles but which will also planarize the pits and scratches to completion. The process also shows significant promise for planarizing substrate roughness.