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Molecular resist materials for electron beam lithography have received significant interest as a route to reducing line width roughness and improving resolution. However, they have often required the use of hazardous solvents in their processing. A new family of fullerene based negative tone chemically amplified e-beam resists, using industry compatible solvents, has been developed. A sensitivity of [similar]40 μC cm−2 was achieved at 20 keV. Isolated features with a line width of 13.6 nm as well as [similar]20 nm lines on a 36 nm pitch have been patterned, whilst one variant has demonstrated resolution to 15 nm half-pitch at slightly higher dose.
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- 2 Finished
1/04/13 → 31/03/14
Project: Research Councils