Presentation 1999/9/28
Contribution of radicals and ions in atomic-order plasma nitridation of Si
Takuya SEINO, Takashi MATSUURA, Junichi MUROTA,
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Abstract(in English) Contribution of radicals and ions to atomic-order nitridation of Si(100) have been investigated using an ultraclean ECR plasma apparatus. The N atom concentration on Si(100) increases with the plasma exposure time and tends to saturate to a value corresponding to a few atomic-layers. In the initial stage, the N atom concentration is normalized by the product of the relative radical density with the nitrogen plasma exposure time and the number of the incident ions is much smaller than the nitridation amount, which means the radical reaction is dominant. Assuming Langmuir-type kinetics neglecting desorption, an excellent agreement is observed by fitting the experimental data. In the saturation region, the N atom concentration is normalized by the number of incident ions and becomes higher than that corresponding to the double atomic-layers. Therefore, it is suggested that nitridation of the deeper atoms below the surface is induced by the ion incidence.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) atomic-order nitridation / Si(100) / nitrogen plasma / radical and ion / Langmuir-type
Paper # SDM99-149
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Conference Information
Committee SDM
Conference Date 1999/9/28(1days)
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Registration To Silicon Device and Materials (SDM)
Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Contribution of radicals and ions in atomic-order plasma nitridation of Si
Sub Title (in English)
Keyword(1) atomic-order nitridation
Keyword(2) Si(100)
Keyword(3) nitrogen plasma
Keyword(4) radical and ion
Keyword(5) Langmuir-type
1st Author's Name Takuya SEINO
1st Author's Affiliation Laboratory for Electronic Intelligent Systems, Research Institute of Electrical Communication, Tohoku University()
2nd Author's Name Takashi MATSUURA
2nd Author's Affiliation Laboratory for Electronic Intelligent Systems, Research Institute of Electrical Communication, Tohoku University
3rd Author's Name Junichi MUROTA
3rd Author's Affiliation Laboratory for Electronic Intelligent Systems, Research Institute of Electrical Communication, Tohoku University
Date 1999/9/28
Paper # SDM99-149
Volume (vol) vol.99
Number (no) 340
Page pp.pp.-
#Pages 5
Date of Issue