JP2008277326A - アモルファス酸化物半導体、半導体デバイス及び薄膜トランジスタ - Google Patents
アモルファス酸化物半導体、半導体デバイス及び薄膜トランジスタ Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 81
- 239000010409 thin film Substances 0.000 title claims abstract description 16
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 20
- 229910052738 indium Inorganic materials 0.000 claims abstract description 20
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 20
- 239000000203 mixture Substances 0.000 abstract description 18
- 239000010408 film Substances 0.000 description 55
- 238000000034 method Methods 0.000 description 16
- 230000037230 mobility Effects 0.000 description 11
- 239000000758 substrate Substances 0.000 description 9
- 230000015572 biosynthetic process Effects 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 230000005669 field effect Effects 0.000 description 4
- 238000000560 X-ray reflectometry Methods 0.000 description 3
- 239000000654 additive Substances 0.000 description 3
- 238000002447 crystallographic data Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000001552 radio frequency sputter deposition Methods 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 238000001771 vacuum deposition Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 239000007772 electrode material Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005566 electron beam evaporation Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- -1 plasma Chemical class 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
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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
- H01L29/26—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, elements provided for in two or more of the groups H01L29/16, H01L29/18, H01L29/20, H01L29/22, H01L29/24, e.g. alloys
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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
- H01L29/24—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only semiconductor materials not provided for in groups H01L29/16, H01L29/18, H01L29/20, H01L29/22
- H01L29/247—Amorphous materials
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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
- H01L29/66742—Thin film unipolar transistors
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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
- H01L29/66969—Multistep manufacturing processes of devices having semiconductor bodies not comprising group 14 or group 13/15 materials
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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
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
- H01L29/78693—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate the semiconducting oxide being amorphous
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Abstract
【解決手段】In、Ga、Znの組成比がInxGayZnzで示されるアモルファス酸化物半導体において、その密度(単位体積あたりの質量)が0.94×(7.121x+5.941y+5.675z)/(x+y+z)以上である。
【選択図】図1
Description
(ただし、0≦x≦1、0≦y≦1、0≦z≦1、x+y+z≠0)…式(1)
アモルファス物質の薄膜を形成する場合、薄膜内に空隙が形成されるなどの原因により、一般的に理論密度と比較して低密度になる。
[実施例1:アモルファス酸化物半導体]
まず、厚さ100nmの熱酸化SiO2膜を形成したn型Si基板上に、厚さ40nmのIn、Ga、Znの組成比がInxGayZnzで表されるアモルファス酸化物半導体膜を基板温度200で成膜した。InGaO3(ZnO)ターゲットを用いたrfスパッタ法によって行った。
アモルファス酸化物半導体膜を用いた半導体デバイスとして、図3に示すボトムゲート型TFT素子を作製した。
102 SiO2酸化膜
103 アモルファス酸化物半導体膜
104 ドレイン電極
105 ソース電極
Claims (5)
- 少なくとも、In、Ga、Znから選択される元素の1つを含むアモルファス酸化物半導体であって、
該アモルファス酸化物に含まれるInとGaとZnの原子数の比をInxGayZnzとした場合に、前記アモルファス酸化物半導体の密度をMとすると、式(1)で表される関係を有することを特徴とするアモルファス酸化物半導体。
M≧0.94×(7.121x+5.941y+5.675z)/(x+y+z)
…式(1)
(ただし、0≦x≦1、0≦y≦1、0≦z≦1、x+y+z≠0) - x>0、y>0、z>0であることを特徴とする請求項1記載のアモルファス酸化物半導体。
- x/(x+y+z)、y/(x+y+z)、z/(x+y+z)がそれぞれ0.2以上であることを特徴とする請求項1記載のアモルファス酸化物半導体。
- 請求項1から3のいずれか1項記載のアモルファス酸化物半導体を用いることを特徴とする半導体デバイス。
- 請求項1から3のいずれか1項記載のアモルファス酸化物半導体をチャネル層に用いることを特徴とする薄膜トランジスタ。
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007115617A JP2008277326A (ja) | 2007-04-25 | 2007-04-25 | アモルファス酸化物半導体、半導体デバイス及び薄膜トランジスタ |
KR1020097023596A KR20090128561A (ko) | 2007-04-25 | 2008-04-15 | 아모퍼스 산화물 반도체, 반도체 디바이스 및 박막 트랜지스터 |
US12/594,629 US8154017B2 (en) | 2007-04-25 | 2008-04-15 | Amorphous oxide semiconductor, semiconductor device, and thin film transistor |
EP08740693.0A EP2150982B1 (en) | 2007-04-25 | 2008-04-15 | Method of producing thin film transistor |
CN200880013223.4A CN101669208B (zh) | 2007-04-25 | 2008-04-15 | 非晶氧化物半导体、半导体器件和薄膜晶体管 |
ES08740693.0T ES2453568T3 (es) | 2007-04-25 | 2008-04-15 | Método de fabricación de un transistor de película fina |
PCT/JP2008/057648 WO2008133220A1 (en) | 2007-04-25 | 2008-04-15 | Amorphous oxide semiconductor, semiconductor device, and thin film transistor |
TW097114860A TWI369786B (en) | 2007-04-25 | 2008-04-23 | Amorphous oxide semiconductor, semiconductor device, and thin film transistor |
US13/403,536 US8502222B2 (en) | 2007-04-25 | 2012-02-23 | Amorphous oxide semiconductor, semiconductor device, thin film transistor and display device |
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JP2007115617A JP2008277326A (ja) | 2007-04-25 | 2007-04-25 | アモルファス酸化物半導体、半導体デバイス及び薄膜トランジスタ |
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JP2007115617A Pending JP2008277326A (ja) | 2007-04-25 | 2007-04-25 | アモルファス酸化物半導体、半導体デバイス及び薄膜トランジスタ |
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US (2) | US8154017B2 (ja) |
EP (1) | EP2150982B1 (ja) |
JP (1) | JP2008277326A (ja) |
KR (1) | KR20090128561A (ja) |
CN (1) | CN101669208B (ja) |
ES (1) | ES2453568T3 (ja) |
TW (1) | TWI369786B (ja) |
WO (1) | WO2008133220A1 (ja) |
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Also Published As
Publication number | Publication date |
---|---|
EP2150982A1 (en) | 2010-02-10 |
US20120146021A1 (en) | 2012-06-14 |
US8502222B2 (en) | 2013-08-06 |
CN101669208B (zh) | 2011-05-18 |
WO2008133220A1 (en) | 2008-11-06 |
TW200849605A (en) | 2008-12-16 |
TWI369786B (en) | 2012-08-01 |
KR20090128561A (ko) | 2009-12-15 |
CN101669208A (zh) | 2010-03-10 |
US8154017B2 (en) | 2012-04-10 |
ES2453568T3 (es) | 2014-04-08 |
US20100044703A1 (en) | 2010-02-25 |
EP2150982B1 (en) | 2014-03-19 |
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