Controlling etch properties of silicon-based anti-reflective spin-on hardmask materials

Sang Kyun Kim, Hyeon Mo Cho, Changsoo Woo, Sang Ran Koh, Mi Young Kim, Hui Chan Yoon, Woojin Lee, Seung Wook Shin, Jong Seob Kim, Tuwon Chang

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

2 Citations (Scopus)


In the recent semiconductor mass production, the tri-layer hardmask system has become crucial for successful patterning in many applications. Silicon-based anti-reflective spin-on hardmask (Si-SOH), which can be built by spin-on coating, is desirable in terms of mass production throughput and the overall cost of ownership. As the pattern size shrinks, the thickness of photoresist also becomes thinner, which forces the thickness of Si-SOH to be thinner resulting in a tighter thickness margin. In this case, controlling optical properties of Si-SOH becomes important in order to achieve low reflectivity in the exposure process. In addition, the tri-layer system can be set up more easily when the etch properties of Si-SOH can be controlled. Previously, we reported papers on silicon-based anti-reflective spin-on hardmask materials for 193 nm lithography, immersion ArF lithography, and optimization of optical properties of Si-SOH. In this paper, the technique for controlling etch properties of Si-SOH by a different type of monomer is described. To control etch properties in the same resin platform, the synthesis method was modified. Characterization of the Si-SOH synthesized by the new technique and the lithographic performance using this material are described in detail.

Original languageEnglish
Title of host publicationAdvances in Resist Materials and Processing Technology XXVI
Publication statusPublished - 2009
EventAdvances in Resist Materials and Processing Technology XXVI - San Jose, CA, United States
Duration: 2009 Feb 232009 Feb 25

Publication series

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


OtherAdvances in Resist Materials and Processing Technology XXVI
Country/TerritoryUnited States
CitySan Jose, CA

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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