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Volumn 104, Issue 10, 2008, Pages

Thermal stability of nitrogen in nitrided HfSiO2 / SiO2 /Si (001) ultrathin films

Author keywords

[No Author keywords available]

Indexed keywords

ATOMS; BINDING ENERGY; BINDING SITES; ELECTRON ENERGY LOSS SPECTROSCOPY; HAFNIUM; HAFNIUM COMPOUNDS; MASS SPECTROMETRY; NITRIDES; NITROGEN; NONMETALS; NUCLEAR ENERGY; PHOTOELECTRON SPECTROSCOPY; POTENTIAL ENERGY; RAPID THERMAL ANNEALING; RAPID THERMAL PROCESSING; SECONDARY ION MASS SPECTROMETRY; SILICON; SILICON NITRIDE; THERMODYNAMIC STABILITY; ULTRATHIN FILMS;

EID: 57049164840     PISSN: 00218979     EISSN: None     Source Type: Journal    
DOI: 10.1063/1.3021051     Document Type: Article
Times cited : (23)

References (31)
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    • The attenuation lengths employed in this study were obtained from tables provided by, Standard Reference Database 82, Version 1.0, National Institute of Standards and Technology,. The TPP (Tanuma, Powell & Penn) model was employed as the source for the inelastic mean free path.
    • The attenuation lengths employed in this study were obtained from tables provided by C. J. Powell and A. Jablonski, Standard Reference Database 82, Version 1.0, National Institute of Standards and Technology, 2001. The TPP (Tanuma, Powell & Penn) model was employed as the source for the inelastic mean free path.
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    • A deliberate sample position optimization procedure was employed to ensure that the sample rotation axis, x-ray spot centroid, and photoelectron analyzer axis were coincident.
    • A deliberate sample position optimization procedure was employed to ensure that the sample rotation axis, x-ray spot centroid, and photoelectron analyzer axis were coincident.
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    • The forward focusing is a diffraction effect in which the electrons are elastically scattered to follow an atomic row in crystalline samples, which results in an angular dependent photoelectron intensity distribution. The effect is minimized by employing a large acceptance angle in the electron analyzer. This large acceptance angle (16°) was included in the numerical modeling of the data.
    • The forward focusing is a diffraction effect in which the electrons are elastically scattered to follow an atomic row in crystalline samples, which results in an angular dependent photoelectron intensity distribution. The effect is minimized by employing a large acceptance angle in the electron analyzer. This large acceptance angle (16°) was included in the numerical modeling of the data.
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    • The software is available at.
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    • A common XPS spectra fitting approach is to find a set of peak parameters (binding energy, height, and width) by fitting a spectrum taken at one of the takeoff angles, and then using those parameters for the spectra taken at the remaining angles. By inspecting the quality of the fits, the parameters of the first spectra peak set are constrained to a value that would provide a better fit for the other spectra. The process is performed in an iterative "loop" and repeated until a "good" fit is found for all spectra. When to stothis "one-by-one" iterative process is often a subjective decision.
    • A common XPS spectra fitting approach is to find a set of peak parameters (binding energy, height, and width) by fitting a spectrum taken at one of the takeoff angles, and then using those parameters for the spectra taken at the remaining angles. By inspecting the quality of the fits, the parameters of the first spectra peak set are constrained to a value that would provide a better fit for the other spectra. The process is performed in an iterative "loop" and repeated until a "good" fit is found for all spectra. When to stop this "one-by-one" iterative process is often a subjective decision.
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    • See F. S. Aguirre-Tostado's contribution in Ref. 12.
    • See F. S. Aguirre-Tostado's contribution in Ref. 12.
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    • The total number of species considered in the analysis was 10, which would result in 30 structural parameters. As described in the text, and in Ref. in more detail, there are a number of correlations and self-consistency restrictions that are imposed into the analysis.
    • The total number of species considered in the analysis was 10, which would result in 30 structural parameters. As described in the text, and in Ref. in more detail, there are a number of correlations and self-consistency restrictions that are imposed into the analysis.
  • 30
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    • As described in Ref., a deviation from the bulk density would require a recalculation of the electron transport parameters. If the density increases, the attenuation length decreases accordingly, and vice versa. This would lead to new thicknesses and new densities, yielding into an iterative process that does not converge. The physical reason behind this lack of convergence is that the ARXPS technique cannot assess the density of the materials: a layer twice thicker but half denser would induce the same attenuation on the photoelectron signal, and the takeoff angle dependence would be indistinguishable from each other.
    • As described in Ref., a deviation from the bulk density would require a recalculation of the electron transport parameters. If the density increases, the attenuation length decreases accordingly, and vice versa. This would lead to new thicknesses and new densities, yielding into an iterative process that does not converge. The physical reason behind this lack of convergence is that the ARXPS technique cannot assess the density of the materials: a layer twice thicker but half denser would induce the same attenuation on the photoelectron signal, and the takeoff angle dependence would be indistinguishable from each other.
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    • Guha, S.1    Narayanan, V.2


* 이 정보는 Elsevier사의 SCOPUS DB에서 KISTI가 분석하여 추출한 것입니다.