Abstract:
A method for manufacturing a membrane assembly for EUV lithography, the method comprising: providing a stack comprising a planar substrate and at least one membrane layer, wherein the planar substrate comprises an inner region and a border region around the inner region; positioning the stack on a support such that the inner region of the planar substrate is exposed; and selectively removing the inner region of the planar substrate using a non-liquid etchant, such that the membrane assembly comprises: a membrane formed from the at least one membrane layer; and a border holding the membrane, the border formed from the border region of the planar substrate.
Abstract:
A membrane assembly (80) for EUV lithography, the membrane assembly comprising: a planar membrane (40); a border (81) configured to hold the membrane; and a frame assembly (50) connected to the border and configured to attach to a patterning device (MA) for EUV lithography; wherein the frame assembly is connected to the border in a direction perpendicular to the plane of the membrane such that in use the frame assembly is between the border and the patterning device.
Abstract:
A resist composition comprising a) metal-containing nanoparticles and/or nanoclusters, and b) ligands and or organic linkers, wherein one or both of a) or b) are multivalent. A resist composition wherein: i) the resist composition is a negative resist and the nanoparticles and/or nanoclusters cluster upon crosslinking of the ligands and/or organic linkers following exposure to electromagnetic radiation or an electron beam; or ii) the resist composition is a negative resist and the ligands and/or organic linkers are crosslinked and the crosslinking bonds are broken upon exposure to electromagnetic radiation or an electron beam allowing the nanoparticles and/or nanoclusters to cluster together; or the resist composition is a positive resist and the ligands and/or organic linkers are crosslinked and the crosslinking bonds are broken upon exposure to electromagnetic radiation or an electron beam.
Abstract:
Membranes for EUV lithography are disclosed. In one arrangement, a membrane comprises a stack having layers in the following order: a first capping layer comprising an oxide of a first metal; a base layer comprising a compound comprising a second metal and an additional element selected from the group consisting of Si, B, C and N; and a second capping layer comprising an oxide of a third metal, wherein the first metal is different from the second metal and the third metal is the same as or different from the first metal.
Abstract:
A membrane for EUV lithography, the membrane having a thickness of no more than 200 nm and comprising a stack comprising: at least one silicon layer; and at least one silicon compound layer made of a compound of silicon and an element selected from the group consisting of boron, phosphorous, bromine
Abstract:
Methods of manufacturing a pellicle for a lithographic apparatus are disclosed. In one arrangement the method comprises depositing at least one graphene layer on a planar surface of a substrate. The substrate comprises a first substrate portion and a second substrate portion. The method further comprises removing the first substrate portion to form a freestanding membrane from the at least one graphene layer. The freestanding membrane is supported by the second substrate portion.
Abstract:
A method of manufacturing a pellicle for a lithographic apparatus, said method comprising: locally heating the pellicle (4) using radiative heating (3), and depositing coating material simultaneously on both sides of the pellicle. Also disclosed are pellicles manufactured according to this method. Further disclosed is the use of a multilayer graphene pellicle with double-sided hexagonal boron nitride coating in a lithographic apparatus.
Abstract:
The invention relates to a pellicle assembly comprising a pellicle frame defining a surface onto which a pellicle is attached. The pellicle assembly comprises one or more three-dimensional expansion structures that allow the pellicle to expand under stress. The invention also relates to a pellicle assembly for a patterning device comprising one or more actuators for moving the pellicle assembly towards and way from the patterning device.
Abstract:
The invention relates to a pellicle assembly comprising a pellicle frame defining a surface onto which a pellicle is attached. The pellicle assembly comprises one or more three-dimensional expansion structures that allow the pellicle to expand under stress. The invention also relates to a pellicle assembly for a patterning device comprising one or more actuators for moving the pellicle assembly towards and way from the patterning device.
Abstract:
A pellicle suitable for use with a patterning device for a lithographic apparatus. The pellicle comprising at least one breakage region which is configured to preferentially break, during normal use in a lithographic apparatus, prior to breakage of remaining regions of the pellicle. At least one breakage region comprises a region of the pellicle which has a reduced thickness when compared to surrounding regions of the pellicle.