Abstract:
PROBLEM TO BE SOLVED: To provide a system for performing non contact cleaning of the surface of an object, a lithography device including the system, and a device manufacturing method. SOLUTION: The system may include: a He plasma source contained in a chamber; and a control unit configured so as to correct plasma parameters such as an electronic energy distribution of plasma when used, in order to increase formation of a He metastable atom without correcting operation parameters of the plasma source. The control unit may include an electrical bias unit configured so as to apply a positive bias voltage to the object to pull in a free electron from the plasma. The system is previously mixed with He, or may include a supply source of supplement gas to be supplied from a further gas source. The supplement gas may be selected based on previous knowledge of types of a particle to be expected to be present on the surface of the object. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
A spectral purity filter (100) includes a substrate (111), a plurality of apertures (104) through the substrate (111), and a plurality of walls. The walls define the plurality of apertures (104) through the substrate (111). The spectral purity filter (100) also includes a first layer (112) formed on the substrate to reflect radiation of a first wavelength, and a second layer (113) formed on the first layer (112) to prevent oxidation of the first layer (112). The apertures (104) are constructed and arranged to be able to transmit at least a portion of radiation of a second wavelength there through.
Abstract:
A source collector apparatus includes a plasma generation apparatus arranged to excite a fuel to form a radiation emitting plasma, a collector arranged to collect the radiation, and a contamination receiving apparatus, wherein the contamination receiving apparatus is provided with a porous structure.
Abstract:
An arrangement for use in a projection exposure tool (100) for microlithography comprises a reflective optical element (10; 110) and a radiation detector (30; 32; 130). The reflective optical element (10; 110) comprises a carrier element (12) guaranteeing the mechanical strength of the optical element (10; 110) and a reflective coating (18) disposed on the carrier element (12) for reflecting a use radiation (20a). The carrier element (12) is made of a material which upon interaction with the use radiation (20a) emits a secondary radiation (24) the wavelength of which differs from the wavelength of the use radiation (20a), and the radiation detector (30; 32; 130) is configured to detect the secondary radiation (24).
Abstract:
A lithographic apparatus includes a radiation source configured to produce a radiation beam, and a support configured to support a patterning device. The patterning device is configured to impart the radiation beam with a pattern to form a patterned radiation beam. A chamber is located between the radiation source and patterning device. The chamber contains at least one optical component configured to reflect the radiation beam, and is configured to permit radiation from the radiation source to pass therethrough. A membrane (44) is configured to permit the passage of the radiation beam, and to prevent the passage of contamination particles (54) through the membrane. A particle trapping structure (52) is configured to permit gas to flow along an indirect path from inside the chamber to outside the chamber. The indirect path is configured to substantially prevent the passage of contamination particles (58) from inside the chamber to outside the chamber.