JP2022552417A - 水平ゲートオールアラウンド(hGAA)ナノワイヤ及びナノスラブトランジスタ - Google Patents
水平ゲートオールアラウンド(hGAA)ナノワイヤ及びナノスラブトランジスタ Download PDFInfo
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- JP2022552417A JP2022552417A JP2022523177A JP2022523177A JP2022552417A JP 2022552417 A JP2022552417 A JP 2022552417A JP 2022523177 A JP2022523177 A JP 2022523177A JP 2022523177 A JP2022523177 A JP 2022523177A JP 2022552417 A JP2022552417 A JP 2022552417A
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- H01L29/775—Field effect transistors with one dimensional charge carrier gas channel, e.g. quantum wire FET
-
- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78606—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device
- H01L29/78618—Thin film transistors, i.e. transistors with a channel being at least partly a thin film with supplementary region or layer in the thin film or in the insulated bulk substrate supporting it for controlling or increasing the safety of the device characterised by the drain or the source properties, e.g. the doping structure, the composition, the sectional shape or the contact structure
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices adapted for rectifying, amplifying, oscillating or switching, or capacitors or resistors with at least one potential-jump barrier or surface barrier, e.g. PN junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
- H01L29/78696—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the structure of the channel, e.g. multichannel, transverse or longitudinal shape, length or width, doping structure, or the overlap or alignment between the channel and the gate, the source or the drain, or the contacting structure of the channel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y10/00—Nanotechnology for information processing, storage or transmission, e.g. quantum computing or single electron logic
Abstract
Description
上面を有する基板と、
基板の上面上の、ソース及びソース接点を有するソース領域と、
基板の上面上の、ドレイン及びドレイン接点を有するドレイン領域と、
ソースとドレインとの間に位置するチャネルであって、基板の上面に対して実質的に平行な軸を有するチャネルと、
ソース領域とドレイン領域との間のチャネルを包囲するゲートと、
ゲート、ソース接点、又はドレイン接点のうちの1つ以上の上に存在し、これらと接触する熱酸化物層と、
熱酸化物層の上にある低誘電率誘電体層と、
を含む。
1つ以上の実施形態において、低誘電率誘電体層は、約5nm未満の厚さを有する。
Claims (19)
- 半導体素子を形成する方法であって、
複数の積層された対において交互に配置された複数の第1の層及び対応する複数の第2の層を含む超格子構造を、前記第1の層のそれぞれ又は前記第2の層のそれぞれを除去するために選択的にエッチングして、前記超格子構造内の複数のボイドと、ソース領域とドレイン領域との間に延在する複数の半導体材料層と、を形成することと、
前記複数の半導体材料層にドーパント含有ガスをドープして、前記半導体材料層に損傷を生じさせることなく、ドープされた半導体材料層を形成することと、
を含む、方法。 - ドーパントガス源が、前記半導体材料層上のドーパントの表面濃度を形成する、請求項1に記載の方法。
- 前記ドーパントの表面濃度を含む前記半導体材料層をアニール環境に曝露して、前記半導体材料層の厚さ全体にわたって、ドーパントの濃度を均一化することをさらに含む、請求項2に記載の方法。
- 前記アニール環境は、温度が約750℃以上である、請求項3に記載の方法。
- アニーリングが約5秒以下の間行われる、請求項4に記載の方法。
- 前記半導体材料層の前記厚さ全体にわたる前記ドーパントの濃度が、約1017atoms/cm3~約1021atoms/cm3の範囲内にある、請求項3に記載の方法。
- 前記ドーパントが、約1019atoms/cm3のホウ素を含む、請求項6に記載の方法。
- 前記半導体素子が、ゲート電圧が約0.400V以上の水平ゲートオールアラウンド素子を含む、請求項6に記載の方法。
- 前記素子をターンオンするために要する前記ゲート電圧が、前記ドーパントを含まない素子をターンオンするために要する前記ゲート電圧の約140%以上である、請求項8に記載の方法。
- 前記素子をターンオンするために要する前記ゲート電圧が、前記ドーパントを含まない素子をターンオンするための前記ゲート電圧の1~2倍の範囲内にある、請求項8に記載の方法。
- 基板の上面上に前記超格子構造を形成することをさらに含む、請求項1に記載の方法。
- 前記超格子構造の第1の端部に隣接する前記ソース領域と、前記超格子構造の対向する第2の端部に隣接する前記ドレイン領域と、を形成することを更に含む、請求項11に記載の方法。
- 前記第1の層が、少なくとも1つのIII-V族材料を含み、前記第2の層が、少なくとも1つのIII-V族材料を含み、前記第1の層と前記第2の層とは異なる材料を含む、請求項1に記載の方法。
- 前記第1の層がシリコンゲルマニウム(SiGe)を含み、前記第2の層がケイ素(Si)を含む、請求項13に記載の方法。
- 前記超格子構造を選択的にエッチングすることが、シリコンゲルマニウム(SiGe)を含む前記第1の層をエッチングし、ケイ素(Si)を含む前記第2の層を残すことを含む、請求項14に記載の方法。
- 前記第1の層及び前記第2の層の厚さは、それぞれ約3nm~約20nmである、請求項1に記載の方法。
- ソース領域とドレイン領域との間に複数の水平ドープ半導体材料層を含む、水平ゲートゲートオールアラウンド素子。
- 前記水平ドープ半導体材料層が、均一濃度のドーパントを含む、請求項17に記載の素子。
- 命令が格納されたコンピュータ可読媒体であって、前記命令は、実行されると、半導体素子を形成する方法を引き起こす、コンピュータ可読媒体であって、
前記方法が、
複数の積層された対において交互に配置された複数の第1の層及び対応する複数の第2の層を含む超格子構造を、前記第1の層のそれぞれ又は前記第2の層のそれぞれを除去するために選択的にエッチングして、前記超格子構造内の複数のボイドと、ソース領域とドレイン領域との間に延在する複数の半導体材料層と、を形成することと、
前記複数の半導体材料層にドーパント含有ガスをドープして、前記半導体材料層に損傷を生じさせることなく、ドープされた半導体材料層を形成することと、を含む、コンピュータ可読媒体。
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PCT/US2020/056282 WO2021080908A1 (en) | 2019-10-21 | 2020-10-19 | Horizontal gaa nano-wire and nano-slab transistors |
US17/073,505 US11495500B2 (en) | 2019-10-21 | 2020-10-19 | Horizontal GAA nano-wire and nano-slab transistors |
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US8846511B2 (en) | 2013-02-12 | 2014-09-30 | Globalfoundries Inc. | Methods of trimming nanowire structures |
US9000536B2 (en) * | 2013-06-28 | 2015-04-07 | Taiwan Semiconductor Manufacturing Co., Ltd. | Fin field effect transistor having a highly doped region |
US9673277B2 (en) * | 2014-10-20 | 2017-06-06 | Applied Materials, Inc. | Methods and apparatus for forming horizontal gate all around device structures |
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US9460920B1 (en) | 2015-05-11 | 2016-10-04 | Applied Materials, Inc. | Horizontal gate all around device isolation |
US9484406B1 (en) | 2015-09-03 | 2016-11-01 | Applied Materials, Inc. | Method for fabricating nanowires for horizontal gate all around devices for semiconductor applications |
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