NH3-annealed atomic-layer-deposited silicon nitride as a high-k gate dielectric with high reliability

Applied Physics Letters 80 巻 7 号 1252-1254 頁 2002-02-18 発行
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タイトル ( eng )
NH3-annealed atomic-layer-deposited silicon nitride as a high-k gate dielectric with high reliability
作成者
Khosru Quazi Deen Mohd
Yoshimoto Takashi
Kidera Toshirou
収録物名
Applied Physics Letters
80
7
開始ページ 1252
終了ページ 1254
抄録
Extremely thin (equivalent oxide thickness, Teq = 1.2 nm) silicon-nitride high-k (er = 7.2) gate dielectrics have been formed at low temperatures (<550 °C) by an atomic-layer-deposition (ALD) technique with subsequent NH3 annealing at 550 °C. A remarkable reduction in leakage current, especially in the low dielectric voltage region, which will be the operating voltage for future technologies, has made it a highly potential gate dielectric for future ultralarge-scale integrated devices. Suppressed soft breakdown events are observed in ramped voltage stressing. This suppression is thought to be due to a strengthened structure of Si–N bonds and the smoothness and uniformity at the poly-Si/ALD-silicon-nitride interface.
言語
英語
資源タイプ 学術雑誌論文
出版者
American Institute of Physics
発行日 2002-02-18
権利情報
Copyright (c) 2002 American Institute of Physics.
出版タイプ Version of Record(出版社版。早期公開を含む)
アクセス権 オープンアクセス
収録物識別子
[ISSN] 0003-6951
[DOI] 10.1063/1.1447314
[NCID] AA00543431
[DOI] http://dx.doi.org/10.1063/1.1447314