Resist Investigation Method using ab initio MO Calculation on basis of Approximation Molecular Model
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- Nagata Shohei
- Center for EUV Lithography, LASTI, University of Hyogo
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- Niihara Shota
- Center for EUV Lithography, LASTI, University of Hyogo
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- Harada Tetsuo
- Center for EUV Lithography, LASTI, University of Hyogo
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- Watanabe Takeo
- Center for EUV Lithography, LASTI, University of Hyogo
書誌事項
- タイトル別名
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- Resist Investigation Method using <i>ab initio</i> MO Calculation on basis of Approximation Molecular Model
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抄録
The technical issues of EUV resist are high resolution, high sensitivity, low line edge roughness (LER), and low outgas. Between these, there is a trade-off relationship, and the most significant point in these issues is the simultaneous achievement of high sensitivity and low LER. In order to efficiently develop high-performance EUV resist, it is necessary to understand the chemical reaction of EUV resist. Thus, we have studied the EUV chemical reaction using the soft X-ray absorption spectroscopy. In this method, the absorption spectra had a lot of absorption peak which could not be assigned to the chemical bonding. For analysis of these unknown peaks, the molecular orbital (MO) calculation using the first principle, so-called "ab initio", is expected to be an effective support computation method. Since the chemical-structural-optimization is necessary for the first-principle calculation, we introduced the MO calculation software Conflex that can search the position of reactive active molecules in the conformational space, optimize resist chemical structure, and create a resist molecular model. Based on this optimized molecular model, the MO calculation software Gaussian was performed to calculate IR spectrum. By comparing the IR spectra obtained by an experiment and the calculation, some IR peaks was assigned to a chemical group, and chemical-bond transformation was suggested. From these results, it was confirmed that MO calculation had an ability for analyze the chemical reaction of resist material. Thus, MO calculation can accelerate the development of high-performance resist material, which will help a breakthrough of semiconductor devices for "the internet of things".
収録刊行物
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- Journal of Photopolymer Science and Technology
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Journal of Photopolymer Science and Technology 30 (5), 583-589, 2017
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詳細情報 詳細情報について
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- CRID
- 1390282679300639232
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- NII論文ID
- 130005950297
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- NII書誌ID
- AA11576862
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- ISSN
- 13496336
- 09149244
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- NDL書誌ID
- 028336384
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- CiNii Articles
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- 使用不可