JP5988304B2 - 薄膜トランジスタおよびその製造方法 - Google Patents
薄膜トランジスタおよびその製造方法 Download PDFInfo
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- JP5988304B2 JP5988304B2 JP2013045952A JP2013045952A JP5988304B2 JP 5988304 B2 JP5988304 B2 JP 5988304B2 JP 2013045952 A JP2013045952 A JP 2013045952A JP 2013045952 A JP2013045952 A JP 2013045952A JP 5988304 B2 JP5988304 B2 JP 5988304B2
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- 239000010409 thin film Substances 0.000 title claims description 274
- 238000004519 manufacturing process Methods 0.000 title claims description 44
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 194
- 229910052799 carbon Inorganic materials 0.000 claims description 148
- 239000000758 substrate Substances 0.000 claims description 123
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 120
- 229910052710 silicon Inorganic materials 0.000 claims description 120
- 239000010703 silicon Substances 0.000 claims description 120
- 229910052751 metal Inorganic materials 0.000 claims description 72
- 239000002184 metal Substances 0.000 claims description 72
- 239000010408 film Substances 0.000 claims description 71
- 229910021389 graphene Inorganic materials 0.000 claims description 47
- 239000004065 semiconductor Substances 0.000 claims description 8
- 239000002019 doping agent Substances 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 53
- 239000007789 gas Substances 0.000 description 48
- 238000000034 method Methods 0.000 description 41
- 230000008569 process Effects 0.000 description 34
- 238000010586 diagram Methods 0.000 description 21
- 239000000463 material Substances 0.000 description 17
- 125000004432 carbon atom Chemical group C* 0.000 description 11
- 238000005036 potential barrier Methods 0.000 description 9
- 238000000206 photolithography Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 6
- 238000005530 etching Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000009826 distribution Methods 0.000 description 5
- 230000005684 electric field Effects 0.000 description 5
- 238000009616 inductively coupled plasma Methods 0.000 description 5
- 238000005192 partition Methods 0.000 description 4
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052796 boron Inorganic materials 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005566 electron beam evaporation Methods 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000000609 electron-beam lithography Methods 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- ZCYVEMRRCGMTRW-UHFFFAOYSA-N 7553-56-2 Chemical compound [I] ZCYVEMRRCGMTRW-UHFFFAOYSA-N 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 description 1
- 229910002113 barium titanate Inorganic materials 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002500 effect on skin Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- 239000011630 iodine Substances 0.000 description 1
- 239000002608 ionic liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- QPJSUIGXIBEQAC-UHFFFAOYSA-N n-(2,4-dichloro-5-propan-2-yloxyphenyl)acetamide Chemical compound CC(C)OC1=CC(NC(C)=O)=C(Cl)C=C1Cl QPJSUIGXIBEQAC-UHFFFAOYSA-N 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
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- 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
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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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
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- 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
- H01L29/66742—Thin film unipolar transistors
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- 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
- H01L29/778—Field effect transistors with two-dimensional charge carrier gas channel, e.g. HEMT ; with two-dimensional charge-carrier layer formed at a heterojunction interface
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
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- 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
- H01L29/78603—Thin film transistors, i.e. transistors with a channel being at least partly a thin film characterised by the insulating substrate or support
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- 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
- H01L29/78684—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K10/00—Organic devices specially adapted for rectifying, amplifying, oscillating or switching; Organic capacitors or resistors having potential barriers
- H10K10/40—Organic transistors
- H10K10/46—Field-effect transistors, e.g. organic thin-film transistors [OTFT]
- H10K10/462—Insulated gate field-effect transistors [IGFETs]
- H10K10/484—Insulated gate field-effect transistors [IGFETs] characterised by the channel regions
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- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Chemical & Material Sciences (AREA)
- Nanotechnology (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Thin Film Transistor (AREA)
- Insulated Gate Type Field-Effect Transistor (AREA)
Description
図1は、この発明の実施の形態1による薄膜トランジスタの構成を示す断面図である。また、図2は、図1に示すA方向から見た薄膜トランジスタの平面図である。
図9は、実施の形態2による薄膜トランジスタの構成を示す断面図である。また、図10は、図9に示すA方向から見た薄膜トランジスタの平面図である。
図14は、実施の形態3による薄膜トランジスタの構成を示す断面図である。また、図15は、図14に示すA方向から見た薄膜トランジスタの平面図である。
図22は、実施の形態4による薄膜トランジスタの構成を示す断面図である。また、図23は、図22に示すA方向から見た薄膜トランジスタの平面図である。
Claims (5)
- 一主面に凹凸形状がストライプ状または碁盤目状に形成されたシリコン基板と、
前記凹凸形状の凸部の長さ方向に沿って前記凸部上に配置され、前記シリコン基板の法線方向に成長したグラフェンまたはカーボンナノウォール薄膜からなるチャネル層と、
前記グラフェンまたは前記カーボンナノウォール薄膜において前記グラフェンまたは前記カーボンナノウォール薄膜の厚み方向に平行な第1の側面に接し、金属カーボンナノウォール薄膜からなるソース電極と、
前記グラフェンまたは前記カーボンナノウォール薄膜の面内方向において前記ソース電極に対向するように配置され、前記グラフェンまたは前記カーボンナノウォール薄膜において前記第1の側面に対向する第2の側面に接し、金属カーボンナノウォール薄膜からなるドレイン電極と、
ゲート電極と、
前記グラフェンまたは前記カーボンナノウォール薄膜と前記ゲート電極との間に配置された絶縁膜とを備える薄膜トランジスタ。 - 前記絶縁膜は、前記シリコン基板の前記一主面と反対側の表面に接して配置され、
前記ゲート電極は、前記絶縁膜に接して配置され、
前記ソース電極および前記ドレイン電極は、前記凹凸形状の凸部の長さ方向に沿って配置される、請求項1に記載の薄膜トランジスタ。 - 前記絶縁膜は、前記グラフェンまたは前記カーボンナノウォール薄膜において前記シリコン基板側と反対側で前記グラフェンまたは前記カーボンナノウォール薄膜の厚み方向に平行な第3の側面に接して配置され、
前記ゲート電極は、前記絶縁膜に接して配置され、
前記ソース電極および前記ドレイン電極は、前記凹凸形状の凸部の長さ方向に沿って配置される、請求項1に記載の薄膜トランジスタ。 - カーボンナノウォール薄膜をチャネル層として用いた薄膜トランジスタの製造方法であって、
シリコン基板の一主面に凹凸形状をストライプ状または碁盤目状に形成する第1の工程と、
チャネル層となるカーボンナノウォール薄膜と、ソース電極となる第1の金属カーボンナノウォール薄膜と、ドレイン電極となる第2の金属カーボンナノウォール薄膜とを、前記凹凸形状の凸部の長さ方向に沿って前記凸部上に同時に形成する第2の工程と、
前記チャネル層のカーボンナノウォール薄膜に対向して絶縁膜を形成する第3の工程と、
前記絶縁膜に接してゲート電極を形成する第4の工程とを備える薄膜トランジスタの製造方法。 - カーボンナノウォール薄膜をチャネル層として用いた薄膜トランジスタの製造方法であって、
シリコン基板の一主面に凹凸形状をストライプ状または碁盤目状に形成する第1の工程と、
金属カーボンナノウォール薄膜を前記凹凸形状の凸部の長さ方向に沿って前記凸部上に形成する第2の工程と、
前記金属カーボンナノウォール薄膜の一部分にドーパントをドーピングして前記一部分を半導体特性を有するカーボンナノウォール薄膜に変化させ、前記カーボンナノウォール薄膜からなるチャネル層と、第1の金属カーボンナノウォール薄膜からなるソース電極と、第2の金属カーボンナノウォール薄膜からなるドレイン電極とを前記凸部上に形成する第3の工程と、
前記チャネル層のカーボンナノウォール薄膜に対向して絶縁膜を形成する第4の工程と、
前記絶縁膜に接してゲート電極を形成する第5の工程とを備える薄膜トランジスタの製造方法。
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US8785911B2 (en) * | 2011-06-23 | 2014-07-22 | International Business Machines Corporation | Graphene or carbon nanotube devices with localized bottom gates and gate dielectric |
JP5886547B2 (ja) * | 2011-07-05 | 2016-03-16 | 学校法人中部大学 | カーボンナノウォール配列体およびカーボンナノウォールの製造方法 |
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