中国物理B ›› 2024, Vol. 33 ›› Issue (2): 26102-026102.doi: 10.1088/1674-1056/aceaeb

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Theoretical characterization of the adsorption configuration of pyrrole on Si(100) surface by x-ray spectroscopy

Hao-Qing Li(李好情), Jing Ming(明静), Zhi-Ang Jiang(姜志昂), Hai-Bo Li(李海波), Yong Ma(马勇), and Xiu-Neng Song(宋秀能)   

  1. School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
  • 收稿日期:2023-03-06 修回日期:2023-07-24 接受日期:2023-07-27 出版日期:2024-01-16 发布日期:2024-01-16
  • 通讯作者: Xiu-Neng Song E-mail:xiuneng@sdnu.edu.cn
  • 基金资助:
    Project supported by the Shandong Provincial Natural Science Foundation, China (Grant Nos. ZR2022MA025 and ZR2020MA077).

Theoretical characterization of the adsorption configuration of pyrrole on Si(100) surface by x-ray spectroscopy

Hao-Qing Li(李好情), Jing Ming(明静), Zhi-Ang Jiang(姜志昂), Hai-Bo Li(李海波), Yong Ma(马勇), and Xiu-Neng Song(宋秀能)   

  1. School of Physics and Electronics, Shandong Normal University, Jinan 250358, China
  • Received:2023-03-06 Revised:2023-07-24 Accepted:2023-07-27 Online:2024-01-16 Published:2024-01-16
  • Contact: Xiu-Neng Song E-mail:xiuneng@sdnu.edu.cn
  • Supported by:
    Project supported by the Shandong Provincial Natural Science Foundation, China (Grant Nos. ZR2022MA025 and ZR2020MA077).

摘要: The possible configurations of pyrrole absorbed on a Si(100) surface have been investigated by x-ray photoelectron spectroscopy (XPS) and near-edge x-ray absorption fine structure (NEXAFS) spectra. The C-1s XPS and NEXAFS spectra of these adsorption configurations have been calculated by using the density functional theory (DFT) method and full-core hole (FCH) approximation to investigate the relationship between the adsorption configurations and the spectra. The result shows that the XPS and NEXAFS spectra are structurally dependent on the configurations of pyrrole absorbed on the Si(100) surface. Compared with the XPS, the NEXAFS spectra are relatively sensitive to the adsorption configurations and can accurately identify them. The NEXAFS decomposition spectra produced by non-equivalent carbon atoms have also been calculated and show that the spectral features vary with the diverse types of carbon atoms and their structural environments.

关键词: pyrrole, silicon surface, x-ray photoelectron spectroscopy (XPS), near-edge x-ray absorption fine structure (NEXAFS)

Abstract: The possible configurations of pyrrole absorbed on a Si(100) surface have been investigated by x-ray photoelectron spectroscopy (XPS) and near-edge x-ray absorption fine structure (NEXAFS) spectra. The C-1s XPS and NEXAFS spectra of these adsorption configurations have been calculated by using the density functional theory (DFT) method and full-core hole (FCH) approximation to investigate the relationship between the adsorption configurations and the spectra. The result shows that the XPS and NEXAFS spectra are structurally dependent on the configurations of pyrrole absorbed on the Si(100) surface. Compared with the XPS, the NEXAFS spectra are relatively sensitive to the adsorption configurations and can accurately identify them. The NEXAFS decomposition spectra produced by non-equivalent carbon atoms have also been calculated and show that the spectral features vary with the diverse types of carbon atoms and their structural environments.

Key words: pyrrole, silicon surface, x-ray photoelectron spectroscopy (XPS), near-edge x-ray absorption fine structure (NEXAFS)

中图分类号:  (X-ray absorption spectroscopy: EXAFS, NEXAFS, XANES, etc.)

  • 61.05.cj
31.10.+z (Theory of electronic structure, electronic transitions, and chemical binding) 31.15.A- (Ab initio calculations) 31.15.ag (Excitation energies and lifetimes; oscillator strengths)