Surface-imaged silicon polymers for 193-nm excimer laser lithography

  • Roderick R. Kunz
  • , Mark W. Horn
  • , R. B. Goodman
  • , Patricia A. Bianconi
  • , David A. Smith
  • , J. R. Eshelman
  • , Gregory M. Wallraff
  • , Robert D. Miller
  • , Eric J. Ginsburg

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A negative-tone surface-imaged resist process based upon the area-selective oxidation of silicon-backbone polymers is described. A bromine-based plasma is the resist developer, where the oxidized polymer inhibits the bromine-initiated etching to yield a negative-tone image. Using either polysilanes or polysilynes, resist sensitivities in the range of 50 mJ/cm2 have been obtained and resolutions to 0.2 μm achieved. Photosensitizers can be added to further accelerate the photo-oxidation, resulting in sensitivities less than 20 mJ/cm2. The latent image formation is reciprocal with respect to fluence in the range 0.05 to 1.5 mJ/cm2 per pulse and with respect to repetition rate. The photo-oxidation contrast is one, whereas the bromine-based etch step can have a contrast as high as 5. In addition, the exposure, focus, and development latitudes have all been characterized and compared to other surface-imaged 193 nm resist systems.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
PublisherPubl by Int Soc for Optical Engineering
Pages385-393
Number of pages9
ISBN (Print)0819408271, 9780819408273
DOIs
StatePublished - 1992
EventAdvances in Resist Technology and Processing IX - San Jose, CA, USA
Duration: Mar 9 1992Mar 10 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume1672
ISSN (Print)0277-786X

Other

OtherAdvances in Resist Technology and Processing IX
CitySan Jose, CA, USA
Period3/9/923/10/92

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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