JP5243757B2 - 垂直型電界効果トランジスタ・アレイ及びその製造方法 - Google Patents
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/822—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
- H01L21/8232—Field-effect technology
- H01L21/8234—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
- H01L21/823487—MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type with a particular manufacturing method of vertical transistor structures, i.e. with channel vertical to the substrate surface
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/04—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
- H01L27/08—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
- H01L27/085—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
- H01L27/088—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a 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
- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
- H01L29/66409—Unipolar field-effect transistors
- H01L29/66477—Unipolar field-effect transistors with an insulated gate, i.e. MISFET
- H01L29/66666—Vertical transistors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a 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
- H01L29/7827—Vertical transistors
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Manufacturing & Machinery (AREA)
- Ceramic Engineering (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
- Drying Of Semiconductors (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
Description
11、11´:半導体ピラー
12、13:ピラー・マスク層
14、15:スペーサ層
16:ソース/ドレイン領域
18:ゲート誘電体
19、19´:ブロック・マスク
20:ゲート電極材料層
20´:ゲート電極
M1´、M2´:複合マスク層
T1:垂直型電界効果トランジスタ・デバイス
Claims (11)
- 垂直型電界効果トランジスタ・アレイの半導体構造体であって、
複数の半導体ピラーであって、各々の半導体ピラーの全ての垂直部分が、隣接する半導体ピラーからの分離距離より広い半導体ピラー線幅を有する複数の半導体ピラーと、
各々の半導体ピラーの上面及び半導体ピラー間に挿置されたエッチングされた半導体基板の複数の基部の各々に形成されたソース/ドレイン領域であって、隣接する半導体ピラーの間にあるソース/ドレイン領域が当該隣接する半導体ピラーによって共有される、ソース/ドレイン領域と、
各々の半導体ピラーの側壁上及びソース/ドレイン領域が形成された上面上に共形に形成され、かつ前記基部に形成され隣接する半導体ピラーによって共有されるソース/ドレイン領域を覆うゲート誘電体と、
ゲート誘電体が形成された各々の半導体ピラーを環状に囲むように、かつ半導体ピラーの側壁上のゲート誘電体の表面と平行な表面を有するように形成されたゲート電極と、を備える半導体構造体。 - 各々の半導体ピラーは、特定のフォトリソグラフィ装置のフォトリソグラフィによる最小分解可能線幅の2倍に等しい、隣接する半導体ピラーまでのピッチ距離を有する、請求項1に記載の半導体構造体。
- 各々の半導体ピラーは、実質的に垂直な側壁を有する、請求項1に記載の半導体構造体。
- 前記複数の半導体ピラーは、前記垂直型電界効果トランジスタ内に複数のチャネル領域を含む、請求項1に記載の半導体構造体。
- 垂直型電界効果トランジスタ・アレイの半導体構造体であって、
複数の半導体ピラーであって、各々の半導体ピラーの全ての垂直部分が、隣接する半導体ピラーからの分離距離より広い半導体ピラー線幅を有し、且つ、少なくとも1つの半導体ピラーが第1の線幅を有し、少なくとも1つの他の半導体ピラーが、第1の線幅とは異なる第2の線幅を有する複数の半導体ピラーと、
各々の半導体ピラーの上面及び半導体ピラー間に挿置されたエッチングされた半導体基板の複数の基部の各々に形成されたソース/ドレイン領域であって、隣接する半導体ピラーの間にあるソース/ドレイン領域が当該隣接する半導体ピラーによって共有される、ソース/ドレイン領域と、
各々の半導体ピラーの側壁上及びソース/ドレイン領域が形成された上面上に共形に形成され、かつ前記基部に形成され隣接する半導体ピラーによって共有されるソース/ドレイン領域を覆うゲート誘電体と、
各々の半導体ピラーのゲート誘電体の側壁上を覆い、ゲート誘電体の上面上には存在せず、特定のフォトリソグラフィ装置のフォトリソグラフィによる最小分解可能線幅Fの4分の1に等しい厚さを有するゲート電極と、を備え、
第1の線幅はF+2s1に等しく、第2の線幅はF+2S1+2S2に等しく、Fは上記最小分解可能線幅であり、S1は前記複数の半導体ピラーをエッチングにより形成する際に用いられる環状のマスクの第1のスペーサの線幅であり、S2は第1のスペーサに重なる第2のスペーサの線幅である、半導体構造体。 - 各々の半導体ピラーは、特定のフォトリソグラフィ装置のフォトリソグラフィによる最小分解可能線幅の2倍に等しい、隣接する半導体ピラーまでのピッチ距離を有する、請求項5に記載の半導体構造体。
- 各々の半導体ピラーは、実質的に垂直な側壁を有する、請求項5に記載の半導体構造体。
- 前記複数の半導体ピラーは、前記垂直型電界効果トランジスタ内に複数のチャネル領域を含む、請求項5に記載の半導体構造体。
- 垂直型電界効果トランジスタ・アレイの半導体構造体を製造する方法であって、
半導体基板上に配置された複数の同じサイズのマスク層を形成するステップと、
前記複数の同じサイズのマスク層の各々を環状に増大させ、前記半導体基板上に複数の環状に増大されたマスク層を準備するステップと、
前記複数の環状に増大されたマスク層をエッチング・マスクとして用いて、前記半導体基板の少なくとも最初の部分をエッチングし、エッチングされた半導体基板内に複数の半導体ピラーを準備するステップであって、各々の半導体ピラーの全ての垂直部分が、隣接する半導体ピラーからの分離距離より広い半導体ピラー線幅を有するステップと、
前記複数の環状に増大されたマスク層を除去して、各々の半導体ピラーの上面を露出させるステップと、
各々の半導体ピラーの上面及び半導体ピラー間に挿置されたエッチングされた半導体基板の複数の基部の各々に形成されたソース/ドレイン領域を形成するステップであって、隣接する半導体ピラーの間にあるソース/ドレイン領域が当該隣接する半導体ピラーによって共有される、ステップと、
各々の半導体ピラーの側壁上及びソース/ドレイン領域が形成された上面上に共形なゲート誘電体を形成するステップであって、ゲート誘電体は前記基部に形成され隣接する半導体ピラーによって共有されるソース/ドレイン領域を覆うステップと、
ゲート誘電体が形成された各々の半導体ピラーを環状に囲むように、かつ半導体ピラーの側壁上のゲート誘電体の表面と平行な表面を有するようにゲート電極を形成するステップと、を含む方法。 - 前記エッチングするステップは、前記半導体基板をエッチングするために、前記半導体基板上に配置された前記環状に増大されたマスク層のみを用いる、請求項9に記載の方法。
- 前記複数の環状に増大されたマスク層を準備するステップは、各々の前記同じサイズのマスク層の側壁に環状なスペーサ層を形成することを含み、
各々の前記半導体ピラーは、F+2s1の線幅を有し、かつ隣接する前記半導体ピラーまでF−2s1のピッチ距離を有し、Fは特定のフォトリソグラフィ装置のフォトリソグラフィによる最小分解可能線幅であり、S1は前記スペーサ層の線幅である、請求項9に記載の方法。
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Application Number | Priority Date | Filing Date | Title |
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US11/516,208 US7825460B2 (en) | 2006-09-06 | 2006-09-06 | Vertical field effect transistor arrays and methods for fabrication thereof |
US11/516208 | 2006-09-06 |
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JP2008066721A JP2008066721A (ja) | 2008-03-21 |
JP5243757B2 true JP5243757B2 (ja) | 2013-07-24 |
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US7560390B2 (en) | 2005-06-02 | 2009-07-14 | Micron Technology, Inc. | Multiple spacer steps for pitch multiplication |
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US7825460B2 (en) | 2010-11-02 |
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JP2008066721A (ja) | 2008-03-21 |
CN101140931B (zh) | 2011-04-06 |
US8383501B2 (en) | 2013-02-26 |
US7981748B2 (en) | 2011-07-19 |
US20110275209A1 (en) | 2011-11-10 |
US20080054350A1 (en) | 2008-03-06 |
US20090305492A1 (en) | 2009-12-10 |
US8110901B2 (en) | 2012-02-07 |
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