講演抄録/キーワード |
講演名 |
2011-10-20 15:20
Effect of Si surface roughness on electrical characteristics of HfON gate insulator ○Dae-Hee Han・Shun-ichiro Ohmi(Tokyo Inst. of Tech.) SDM2011-100 エレソ技報アーカイブへのリンク:SDM2011-100 |
抄録 |
(和) |
(まだ登録されていません) |
(英) |
In this paper, the effect of Si surface roughness on electrical characteristics of HfON gate insulator formed by the electron cyclotron resonance (ECR) plasma sputtering was investigated. In order to improve the electrical characteristics of HfON gate insulator, interface roughness between HfON and Si substrate should be reduced. The surface roughness of Si substrate was reduced by 1 μm-thick wet oxidation followed by the wet etching (HCl:HF=19:1). The obtained RMS roughness was 0.11 nm (as-cleaned: 0.21 nm). The HfON was formed by 1 nm-thick HfN deposition utilizing ECR plasma sputtering followed by the Ar/O2 plasma oxidation. The 600°C PDA was carried out for 1 min in N2 ambient. It was found that the leakage current was decreased from 2 x 10-3 A/cm2 to 3 x 10-4 A/cm2 at VFB -1 V by reducing the Si surface roughness. |
キーワード |
(和) |
/ / / / / / / |
(英) |
Surface roughness / HfON gate insulator / ECR plasma sputtering / / / / / |
文献情報 |
信学技報, vol. 111, no. 249, SDM2011-100, pp. 17-20, 2011年10月. |
資料番号 |
SDM2011-100 |
発行日 |
2011-10-13 (SDM) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
著作権に ついて |
技術研究報告に掲載された論文の著作権は電子情報通信学会に帰属します.(許諾番号:10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
PDFダウンロード |
SDM2011-100 エレソ技報アーカイブへのリンク:SDM2011-100 |