18 June 1984 X-Ray Resist Characterization With Monochromatic Synchrotron Radiation
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The first monochromatic resist exposures in the photon energy range 1 to 3.5 keV were completed at the in-vacuum lithogrpaphy beam line at the Stanford Synchrotron Radiation Laboratory (SSRL). Layered synthetic microstructures (LSM) were used as monochromators. The exposure times of 200 k Poly(chloromethylstyrene) (PCMS) through a boron nitride supported gold absorber mask were below 20 minutes. The sensitivity increase of PCMS at the chlorine edge was clearly observed. A considerable non-uniformity of the beam image in the 10 -20 um range was related to imperfections in the LSM substrate.
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R P Jaeger, R P Jaeger, P Pianetta, P Pianetta, } "X-Ray Resist Characterization With Monochromatic Synchrotron Radiation", Proc. SPIE 0471, Electron-Beam, X-Ray, and Ion-Beam Techniques for Submicrometer Lithographies III, (18 June 1984); doi: 10.1117/12.942338; https://doi.org/10.1117/12.942338

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