Polymers Based on a Novel 1,3-perfluorodioxole for Use as a Soft Polymer Pellicle in 157nm Lithography
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概要
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A series of copolymers of tetrafluoroethylene and 4-trifluormethoxy-1,3-perfluorodioxole (TFETFMD) were prepared as well as a homopolymer of the dioxole (TEMD) using various free-radical initiators. The copolymers were characterized by 19F NMR, TGA, DSC and VUV measurements. The transparency at 157nm increased with increasing dioxole content reaching an ( ((m-1(/sup>) = 0.76 for an unoptimized homopolymer of the dioxole prepared with a perfluorinated peroxide initiator. Exposure studies of the dioxole homopolymer at 157 nm indicate rapid formation of carbonyl species and therefore an anticipated short lifetime as a potential polymer pellicle for 157 nm lithography.
- The Society of Photopolymer Science and Technology (SPST)の論文
The Society of Photopolymer Science and Technology (SPST) | 論文
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