What question did this study set out to answer?

To compare the vibrational behavior and chemisorption sites of hydrogen on reconstructed Si(111)-(7×7) and laser-annealed Si(111)-(1×1) silicon surfaces.

October 15, 1983Physical review. B, Condensed matter

Hydrogen chemisorption on Si(111)-(7×7) and -(1×1) surfaces. A comparative infrared study

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Authors

YCYves J. ChabalRutgers, The State University of New Jersey GHG. S. HigashiAdvanced Micro Devices (United States)SCS. B. ChristmanAT&T (United States)

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Implication

Comparative infrared spectroscopy reveals distinct adsorption sites and subsurface diffusion in Si(111)-(7×7) versus -(1×1) surfaces, highlighting structural details of silicon surface reconstruction.

Key Points

To compare the vibrational behavior and chemisorption sites of hydrogen on reconstructed Si(111)-(7×7) and laser-annealed Si(111)-(1×1) silicon surfaces.
Measured hydrogen vibrational modes across Si(111)-(7×7) and laser-annealed Si(111)-(1×1) crystal surfaces using high-resolution infrared spectroscopy.
Evaluated initial sticking coefficients and the distribution of chemisorption sites during hydrogen exposure.
Both surfaces exhibit similar initial sticking coefficients and broad overall distributions of chemisorption sites.
Two distinct adsorption sites are resolved on the (7×7) surface, whereas only a single well-defined site exists on the laser-annealed (1×1) surface.
Hydrogen diffusion below the outermost silicon layer occurs on the (7×7) reconstructed surface but is absent on the (1×1) surface.

Cite This Study

Chabal et al. (1983) studied this question.

synapsesocial.com/papers/6a7dc8b77096e04f9ca14924 https://doi.org/10.1103/physrevb.28.4472

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Hydrogen chemisorption on Si(111)-(7×7) and -(1×1) surfaces. A comparative infrared study

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Key Points

Cite This Study

Hydrogen chemisorption on Si(111)-(7×7) and -(1×1) surfaces. A comparative infrared study

Discussion

Member takes

Implication

Key Points

Cite This Study

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