リソグラフィ用EUV(極端紫外)光源研究の現状と将来展望 2.  EUVリソグラフィと露光装置

書誌事項

タイトル別名
  • EUV Lithography and Exposure Tool.
  • EUVリソグラフィと露光装置
  • EUV リソグラフィ ト ロコウ ソウチ

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抄録

The resolution limit of conventional optical lithography is thought to be around 70 nm. EUV lithography using EUV radiation with a wavelength region of 10 to 14 nm can break through this limitation and can achieve a resolution of below 50 nm. EUV employs reflection-type optics involving multilayer mirrors. Wafers are exposed in a vacuum and reflection-type masks are used. Chemically amplified photoresist materials used for KrF lithography can be applied to EUV lithography. The required EUV power from an EUV source for a throughput of over 100 wph is estimated to be about 80 to 120 W.

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