Attenuated phase-shift mask for mitigation of photon shot noise effect in contact hole pattern for extreme ultraviolet lithography
- Title
- Attenuated phase-shift mask for mitigation of photon shot noise effect in contact hole pattern for extreme ultraviolet lithography
- Author
- 안진호
- Keywords
- Extreme ultraviolet lithography; Light sources; Phase shift; Photons; Shot noise; Stochastic systems
- Issue Date
- 2014-08
- Publisher
- IOP PUBLISHING LTD, TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND
- Citation
- Applied Physics Express, 2014 , 7(9), p1-1
- Abstract
- In extreme ultraviolet lithography (EUVL), insufficient light source power is the biggest concern for high-volume manufacturing. Additionally, the photon shot noise (PSN) effect is believed to be the main source of degradation in various aspects of imaging performance. In this study, we propose an attenuated phase-shift mask (PSM) as a solution to both of these issues, yielding improved mask performance for the printing of small contact hole (C/H) patterns. Our PSM shows superior imaging performance over that of a binary intensity mask. We speculate that the stochastic imaging characteristics are improved by the enhanced diffraction efficiency of the PSM.
- URI
- http://iopscience.iop.org/article/10.7567/APEX.7.096502/metahttp://hdl.handle.net/20.500.11754/48096
- ISSN
- 1882-0778
- DOI
- 10.7567/APEX.7.096502
- Appears in Collections:
- COLLEGE OF ENGINEERING[S](공과대학) > MATERIALS SCIENCE AND ENGINEERING(신소재공학부) > Articles
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