JP5553266B2 - ナノワイヤ電界効果トランジスタの作製方法 - Google Patents
ナノワイヤ電界効果トランジスタの作製方法 Download PDFInfo
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- JP5553266B2 JP5553266B2 JP2010516829A JP2010516829A JP5553266B2 JP 5553266 B2 JP5553266 B2 JP 5553266B2 JP 2010516829 A JP2010516829 A JP 2010516829A JP 2010516829 A JP2010516829 A JP 2010516829A JP 5553266 B2 JP5553266 B2 JP 5553266B2
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- 239000002070 nanowire Substances 0.000 title claims description 104
- 230000005669 field effect Effects 0.000 title claims description 56
- 238000004519 manufacturing process Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 15
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 19
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000010703 silicon Substances 0.000 claims description 19
- 239000013078 crystal Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 15
- 238000005530 etching Methods 0.000 claims description 12
- 230000003647 oxidation Effects 0.000 claims description 10
- 238000007254 oxidation reaction Methods 0.000 claims description 10
- 238000000137 annealing Methods 0.000 claims description 9
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 238000010586 diagram Methods 0.000 description 16
- 238000001020 plasma etching Methods 0.000 description 10
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 238000005229 chemical vapour deposition Methods 0.000 description 7
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 5
- 239000007772 electrode material Substances 0.000 description 5
- 238000010894 electron beam technology Methods 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 238000005468 ion implantation Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000347 anisotropic wet etching Methods 0.000 description 2
- 229910052785 arsenic Inorganic materials 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000002105 nanoparticle Substances 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- 229910001362 Ta alloys Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 239000000908 ammonium hydroxide Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000007795 chemical reaction product Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920005591 polysilicon Polymers 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
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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
- H01L29/68—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
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0657—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body
- H01L29/0665—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body the shape of the body defining a nanostructure
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/06—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
- H01L29/0657—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body
- H01L29/0665—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions characterised by the shape of the body the shape of the body defining a nanostructure
- H01L29/0669—Nanowires or nanotubes
- H01L29/0673—Nanowires or nanotubes oriented parallel to a substrate
-
- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/122—Single quantum well structures
- H01L29/125—Quantum wire structures
-
- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/41—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
- H01L29/423—Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
- H01L29/42312—Gate electrodes for field effect devices
- H01L29/42316—Gate electrodes for field effect devices for field-effect transistors
- H01L29/4232—Gate electrodes for field effect devices for field-effect transistors with insulated gate
- H01L29/42384—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor
- H01L29/42392—Gate electrodes for field effect devices for field-effect transistors with insulated gate for thin film field effect transistors, e.g. characterised by the thickness or the shape of the insulator or the dimensions, the shape or the lay-out of the conductor fully surrounding the channel, e.g. gate-all-around
-
- 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
- H01L29/775—Field effect transistors with one dimensional charge carrier gas channel, e.g. quantum wire FET
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- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Nanotechnology (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Theoretical Computer Science (AREA)
- Mathematical Physics (AREA)
- Materials Engineering (AREA)
- Thin Film Transistor (AREA)
- Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
(第1実施例)
図1、図2及び図3に本発明の第1実施例を示す。図1は本発明に係る(100)SOI基板上に形成する、上下に一対の円形断面形状のナノワイヤを持つナノワイヤ電界効果トランジスタの平面図であり、図2はA−A’断面図であり、図3はB−B’断面図である。図1〜図3において、1は基板、2は埋め込み酸化膜、3はゲート電極、5−1と5−2は縦方向に同時に形成した円形断面形状のナノワイヤ、6−1と6−2はゲート絶縁膜、7−1と7−2は、それぞれソース領域とドレイン領域である。
(第2実施例)
図20、図21、図22に本発明の第2実施例を示す。図20は、本発明に係る2個の円形断面形状のナノワイヤを複数組並列に配置したナノワイヤ電界効果トランジスタの平面図である。図21はそのA−A’断面図、図22はそのB−B’断面図である。
(第3実施例)
図23、図24、図25に本発明の第3実施例を示す。図23は、本発明に係わる、上下一対の円形断面形状のナノワイヤを有するナノワイヤ電界効果トランジスタをPMOSに、上部円形断面形状のナノワイヤをエッチングで無くした円形断面形状のナノワイヤを有するナノワイヤ電界効果トランジスタをNMOSに用いた集積回路の平面図である。図24はそれぞれそのA1−A1’及びA2−A2’断面図、図25はそのB−B’断面図である。
(1)上記段落0014でのイオン注入の際に、上下一対の円形断面形状のナノワイヤを有するナノワイヤ電界効果トランジスタのソース・ドレイン領域7−1と7−2には、B或いはBF 2 + を注入し、上の円形断面形状ナノワイヤが欠如したナノワイヤ電界効果トランジスタのソース・ドレイン領域7−3と7−4には、P、或いはAsを注入する。
(2)上記段落0018のゲート電極形成後に、上下一対の円形断面形状のナノワイヤを有するナノワイヤ電界効果トランジスタの領域は、厚膜レジストで保護して置き、粘度の低いレジストを高速で塗布する。酸素プラズマでレジストをエッチバックして行き、凸となっているナノワイヤとゲート電極の交差する部分の頭部が露出するようにする。次に、RIEで、エッチング用ガス種を変えながら、上部のゲート電極、酸化膜、ナノワイヤの順にエッチングする。
(第4実施例)
図26、図27、図28に本発明の第4実施例を示す。図26は、本発明に係る、上下一対の円形断面形状のナノワイヤを有するナノワイヤ電界効果トランジスタと、2個の円形断面形状ナノワイヤを複数組配置したナノワイヤ電界効果トランジスタを混載した集積回路の平面図である。図27はそれぞれそのA1−A1’及びA2−A2’断面図、図28はそのB−B’断面図である。
2 埋め込み酸化膜
3、3−1、3−2 ゲート電極
4 絶縁膜
5、5−1、5−2、5−4、5−5、5−6、5−7、5−8、5−9、5−10 円形断面形状のナノワイヤ
6−1、6−2、6−4、6−5、6−6、6−7、6−8、6−9、6−10 ゲート絶縁膜
7−1、7−2、7−3、7−4 ソース・ドレイン領域
9 (100)結晶シリコン層
10 酸化膜
11 酸化膜
11−1 ハードマスク
13−1、13−2 絶縁膜
20、21 レジストパターン
22、23 隙間
24 レジストパターン
30 ゲート電極材料
40−1、40−2 三角断面形状のナノワイヤ
50 矩形断面形状Finチャネル
50−1、50−2、50−3 円形断面形状のナノワイヤ
60−1、60−2、60−3 ゲート絶縁膜
Claims (2)
- (100)面方位を持つSOI基板を用意する工程、SOI層を構成するシリコン結晶を加工して断面矩形の起立した板状体とする工程、結晶異方性エッチングにより該シリコン結晶を、2個の三角柱状体がその稜線を介して互いに離隔して対向するように上下に配置された形状に加工する工程及び該2個の三角柱状体を水素アニール或いは熱酸化しナノワイヤを構成する円柱状体とする工程を含むナノワイヤ電界効果トランジスタの作製方法。
- (100)面方位を持ち2層以上のSOI層と埋め込み酸化膜を有するSOI基板を用意する工程、SOI層を構成するシリコン結晶を加工して断面矩形の起立した板状体とする工程、結晶異方性エッチングにより該シリコン結晶を、2個の三角柱状体の組がその稜線を介して互いに離隔して対向するように上下に配置された形状に加工する工程及び該2個の三角柱状体の組を水素アニール或いは熱酸化しナノワイヤを構成する円柱状体とする工程を含むナノワイヤ電界効果トランジスタの作製方法。
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JP2010516829A JP5553266B2 (ja) | 2008-06-09 | 2009-06-05 | ナノワイヤ電界効果トランジスタの作製方法 |
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JP2008150439 | 2008-06-09 | ||
JP2008150439 | 2008-06-09 | ||
PCT/JP2009/060310 WO2009150999A1 (ja) | 2008-06-09 | 2009-06-05 | ナノワイヤ電界効果トランジスタ及びその作製方法、並びにこれを含む集積回路 |
JP2010516829A JP5553266B2 (ja) | 2008-06-09 | 2009-06-05 | ナノワイヤ電界効果トランジスタの作製方法 |
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JPWO2009150999A1 JPWO2009150999A1 (ja) | 2011-11-17 |
JP5553266B2 true JP5553266B2 (ja) | 2014-07-16 |
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US (2) | US20110057163A1 (ja) |
JP (1) | JP5553266B2 (ja) |
WO (1) | WO2009150999A1 (ja) |
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US20110057163A1 (en) | 2011-03-10 |
US20120238082A1 (en) | 2012-09-20 |
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