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25 June 1999 Hot electron emission lithography
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Abstract
We discuss the applicability of a patterned hot electron emission mask in Hot Electron Emission Lithography (HEEL). This method holds the promise of printing entire circuits with exposure times of a few seconds and a resolution of at least 0.1 microns. The hot electron emission mask consists of a silicon wafer with a patterned oxide to two discrete thicknesses and a thin gate electrode. Under positive gate bias, electrons tunnel through the thin oxide regions and are accelerated by the oxide field. Some of these electrons are emitted through the thin gate into vacuum where they are projected onto a second, resist coated wafer by parallel E and B fields. We present experimental data on the mask properties, including energy distribution, angular distribution, electron efficiency and measurements on the mask reliability. We demonstrate 160 nm resolution in a 1:1 projection systems and we anticipate that it will be capable of printing feature sizes of 50 nm.
© (1999) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Marcus Poppeller, Eduard Cartier, and R. M. Tromp "Hot electron emission lithography", Proc. SPIE 3676, Emerging Lithographic Technologies III, (25 June 1999); https://doi.org/10.1117/12.351103
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