Imaging study of positive and negative tone weak phase-shifted 65 nm node contacts

James V. Beach; John S. Petersen; Robert T. Greenway; Mark John Maslow; Susan S. MacDonald; Lee H. Margolis; Gregory P. Hughes

doi:10.1117/12.598535

12 May 2005 Imaging study of positive and negative tone weak phase-shifted 65 nm node contacts

James V. Beach, John S. Petersen, Robert T. Greenway, Mark John Maslow, Susan S. MacDonald, Lee H. Margolis, Gregory P. Hughes

Author Affiliations +

Proceedings Volume 5754, Optical Microlithography XVIII; (2005) https://doi.org/10.1117/12.598535
Event: Microlithography 2005, 2005, San Jose, California, United States

Abstract

CPL and aerial image mapping type contact designs for both negative and positive tones were created, built and tested for 100 nm and sub-100 nm contacts. Experimental results illustrated the need for electromagnetic-field corrections in the simulations. Resolution down to 80nm dense contacts were seen with both negative and positive resists with acceptable process windows though some process optimization is still required as unacceptable CD variation and a reentrant profile was observed. High MEEF requires strict CD control on the mask. Data volume for the isolated contact designs can also challenge the mask build.

Citation Download Citation

James V. Beach, John S. Petersen, Robert T. Greenway, Mark John Maslow, Susan S. MacDonald, Lee H. Margolis, and Gregory P. Hughes "Imaging study of positive and negative tone weak phase-shifted 65 nm node contacts", Proc. SPIE 5754, Optical Microlithography XVIII, (12 May 2005); https://doi.org/10.1117/12.598535

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