Presentation 2000/11/10
Positive Bias Temperature Instability of p^+ Polysilicon Gated pMOSFETs
Tadayuki Nakajima, Masahiro Fujimoto, Shinji Nakano, Ichiro Matsuo,
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Abstract(in English) We studied for the degradation of p^+ polysilicon gated pMOSFETs under positive bias temperature (+BT) stress and the recovery by the baking. The following facts were found. 1.Under+BT stress, the p^+ polysilicon gated pMOSFETs was degraded by the interface trap generation. This phenomenon does not occur in the n^+ polysilicon gated pMOSFETs. The silicon-hydrogen bonds at the Si/SiO_2 become the interface traps by the influence of the hydrogen. 2.The interface traps which generated under +BT stress recover easily by the baking. We consider that this recovery is the influence of the hydrogen, too. 3.The activation energy of the +BT instability and the recovery were 1.2eV and 1.0eV, respectively. This difference 0.2eV is the energy gap between the silicon-hydrogen bonds and the interface state.
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Keyword(in English) Bias temperature instability / interface trap / pMOSFET
Paper # R2000-22
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Committee R
Conference Date 2000/11/10(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) Positive Bias Temperature Instability of p^+ Polysilicon Gated pMOSFETs
Sub Title (in English)
Keyword(1) Bias temperature instability
Keyword(2) interface trap
Keyword(3) pMOSFET
1st Author's Name Tadayuki Nakajima
1st Author's Affiliation Quality Laboratory, Semiconductor Company, Matsushita Electronics Corporation()
2nd Author's Name Masahiro Fujimoto
2nd Author's Affiliation Quality Laboratory, Semiconductor Company, Matsushita Electronics Corporation
3rd Author's Name Shinji Nakano
3rd Author's Affiliation Quality Laboratory, Semiconductor Company, Matsushita Electronics Corporation
4th Author's Name Ichiro Matsuo
4th Author's Affiliation ULSI Process Technology Development Center, Semiconductor Company, Matsushita Electronics Corporation
Date 2000/11/10
Paper # R2000-22
Volume (vol) vol.100
Number (no) 445
Page pp.pp.-
#Pages 6
Date of Issue