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Hydrogen desorption kinetics from H-Si(111) surfaces studied by optical sum frequency generation and second harmonic generation.

Hydrogen desorption kinetics from H-Si(111) surfaces studied by optical sum frequency generation and second harmonic generation.
Hydrogen desorption kinetics from H-Si(111) surfaces studied by optical sum frequency generation and second harmonic generation.
We have studied hydrogen desorption from a flat H-Si (111)1 × 1 surface at 711K by observing sum frequency generation (SFG) and second harmonic generation (SHG) spectra. Flat H-Si (111) surfaces were prepared by dosing hydrogen molecules in an ultra-high vacuum chamber with a base pressure of 10-8 Pa. Combining the SFG and SHG methods, the desorption order has been clarified over the whole hydrogen coverage range from 1 monolayer (ML) to 0ML. The hydrogen desorption was assigned as second order in the high coverage range of 1ML–0.18ML by using SFG spectroscopy and as first order in the coverage range of 0.18ML–0.0ML by using SHG spectroscopy.
0142-2421
1235-1239
Sattar, Md Abdus
b7dbc508-a40e-4cf3-a3bb-1cd727b343e0
Khuat, Thi Thu Hien
ba19e88b-d9d2-4781-ab00-bdcaf32113f4
Miyauchi, Yoshihiro
0b233961-6dfe-4319-ba92-6221e4d504a2
Mizutani, Goro
65900bcb-3c20-4fb1-9048-3db4c4cffc6a
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc
Sattar, Md Abdus
b7dbc508-a40e-4cf3-a3bb-1cd727b343e0
Khuat, Thi Thu Hien
ba19e88b-d9d2-4781-ab00-bdcaf32113f4
Miyauchi, Yoshihiro
0b233961-6dfe-4319-ba92-6221e4d504a2
Mizutani, Goro
65900bcb-3c20-4fb1-9048-3db4c4cffc6a
Rutt, Harvey
e09fa327-0c01-467a-9898-4e7f0cd715fc

Sattar, Md Abdus, Khuat, Thi Thu Hien, Miyauchi, Yoshihiro, Mizutani, Goro and Rutt, Harvey (2016) Hydrogen desorption kinetics from H-Si(111) surfaces studied by optical sum frequency generation and second harmonic generation. [in special issue: Proceedings of the 10th International Symposium on Atomic Level Characterization for New Materials and Devices (ALC 2015)] Surface and Interface Analysis, 48 (11), 1235-1239. (doi:10.1002/sia.6099).

Record type: Article

Abstract

We have studied hydrogen desorption from a flat H-Si (111)1 × 1 surface at 711K by observing sum frequency generation (SFG) and second harmonic generation (SHG) spectra. Flat H-Si (111) surfaces were prepared by dosing hydrogen molecules in an ultra-high vacuum chamber with a base pressure of 10-8 Pa. Combining the SFG and SHG methods, the desorption order has been clarified over the whole hydrogen coverage range from 1 monolayer (ML) to 0ML. The hydrogen desorption was assigned as second order in the high coverage range of 1ML–0.18ML by using SFG spectroscopy and as first order in the coverage range of 0.18ML–0.0ML by using SHG spectroscopy.

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Accepted/In Press date: 1 July 2016
e-pub ahead of print date: 27 July 2016
Published date: November 2016
Organisations: Nanoelectronics and Nanotechnology

Identifiers

Local EPrints ID: 403168
URI: http://eprints.soton.ac.uk/id/eprint/403168
ISSN: 0142-2421
PURE UUID: 5f8637ab-5165-4c1d-959e-a6f87ce2ec19

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Date deposited: 28 Nov 2016 12:20
Last modified: 26 Nov 2019 06:26

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