JP2008535246A - Pmos素子電極としての添加物含有導電性金属酸化物 - Google Patents
Pmos素子電極としての添加物含有導電性金属酸化物 Download PDFInfo
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- 239000000654 additive Substances 0.000 title claims abstract description 91
- 229910044991 metal oxide Inorganic materials 0.000 title claims abstract description 70
- 150000004706 metal oxides Chemical class 0.000 title claims abstract description 70
- 230000000996 additive effect Effects 0.000 claims abstract description 83
- 238000000034 method Methods 0.000 claims abstract description 59
- 229910004298 SiO 2 Inorganic materials 0.000 claims abstract description 18
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims abstract description 8
- 229910021193 La 2 O 3 Inorganic materials 0.000 claims abstract description 8
- 229910010413 TiO 2 Inorganic materials 0.000 claims abstract description 8
- 229910004140 HfO Inorganic materials 0.000 claims abstract description 7
- 239000000463 material Substances 0.000 claims description 55
- 238000005240 physical vapour deposition Methods 0.000 claims description 10
- 238000005566 electron beam evaporation Methods 0.000 claims description 6
- 239000002131 composite material Substances 0.000 claims description 4
- 238000004549 pulsed laser deposition Methods 0.000 claims description 3
- 239000008240 homogeneous mixture Substances 0.000 claims description 2
- 238000001017 electron-beam sputter deposition Methods 0.000 claims 1
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 31
- 238000001228 spectrum Methods 0.000 description 16
- 238000001704 evaporation Methods 0.000 description 13
- 239000000126 substance Substances 0.000 description 11
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- 239000003989 dielectric material Substances 0.000 description 10
- 230000008020 evaporation Effects 0.000 description 10
- 238000000151 deposition Methods 0.000 description 7
- 239000000203 mixture Substances 0.000 description 7
- 238000010894 electron beam technology Methods 0.000 description 6
- 239000004065 semiconductor Substances 0.000 description 6
- 238000004544 sputter deposition Methods 0.000 description 6
- 229910016006 MoSi Inorganic materials 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 230000008859 change Effects 0.000 description 5
- CJNBYAVZURUTKZ-UHFFFAOYSA-N hafnium(iv) oxide Chemical compound O=[Hf]=O CJNBYAVZURUTKZ-UHFFFAOYSA-N 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 239000000377 silicon dioxide Substances 0.000 description 5
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 4
- 238000000231 atomic layer deposition Methods 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 229910001882 dioxygen Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 4
- 229920005591 polysilicon Polymers 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000007792 addition Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 230000003595 spectral effect Effects 0.000 description 3
- 239000000758 substrate Substances 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- CEPICIBPGDWCRU-UHFFFAOYSA-N [Si].[Hf] Chemical compound [Si].[Hf] CEPICIBPGDWCRU-UHFFFAOYSA-N 0.000 description 1
- 230000002999 depolarising effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 229910052735 hafnium Inorganic materials 0.000 description 1
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 description 1
- 229910000449 hafnium oxide Inorganic materials 0.000 description 1
- WIHZLLGSGQNAGK-UHFFFAOYSA-N hafnium(4+);oxygen(2-) Chemical compound [O-2].[O-2].[Hf+4] WIHZLLGSGQNAGK-UHFFFAOYSA-N 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 238000001000 micrograph Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 150000002927 oxygen compounds Chemical class 0.000 description 1
- 238000005546 reactive sputtering Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/28—Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
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- H01L21/28017—Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
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Abstract
Description
本発明に関する以下の詳細な説明は本質的に単なる例示に過ぎず、本発明または本発明の適用形態及び使用を制限するものではない。更に、本発明は、本発明に関連して前に示した背景説明に提示される、または本発明に関する以下の詳細な説明に提示されるいかなる理論の制約を受けるものでもない。
更に別の実施形態においては、本方法では、電極をp−MOS素子電極金属構造として形成する。
更に別の実施形態では、電極は、PVD法及びMOCVD法により形成されるホスト導電性金属酸化物及び添加物の均一混合物を含む。
更に別の実施形態では、電極の仕事関数を調整する方法が提供され、本方法では、露出表面を持つ高k誘電体積層構造を形成し、高k誘電体積層構造の露出表面を、RuOx,IrOx,ReOx,MoOx,WOx,VOx,及びPdOxから成るグループから選択され金属酸化物の蒸気に接触させ、誘電体積層構造の露出表面を、SiO2,Al2O3,HfO2,ZrO2,MgO,SrO,BaO,Y2O3,La2O3,及びTiO2から成るグループから選択される添加物の蒸気に接触させ、高k誘電体積層構造の露出表面と、金属酸化物の蒸気及び添加物の蒸気との接触を維持して、添加物が約1原子量%〜約5原子量%だけ電極に含まれるように電極を形成し、そして電極に含まれる添加物の量を制御して所望の仕事関数を実現する。
更に別の実施形態においては、本方法では、設定k値を有する高k誘電体積層構造を形成し、そして所望の仕事関数を有する電極を形成して、複合誘電体積層構造及び電極が約5.0eV〜約5.4eVの間の電子仕事関数を持つようにする。
更に別の実施形態では、金属酸化物は、最高約1000℃までの温度でほぼ安定した状態を維持する。
更に別の実施形態では、電極はp−MOS構造を含む。
更に別の実施形態では、金属酸化物及び添加物を組み合わせて、約5eVよりも大きい表面仕事関数を実現する。
更に別の実施形態では、電極はゲート電極を含む。
Claims (20)
- 金属電極を形成するための方法であって、
露出表面を持つ高k誘電体積層構造を形成する工程と、
x,y,z,a,b,及びcを実数とする場合に、高k誘電体積層構造の露出表面を、RuOx,IrOy,ReOz,MoOa,WOb,VOx,及びPdOcから成るグループから選択される材料を含む金属酸化物の蒸気に接触させる工程と、
高k誘電体積層構造の露出表面を、SiO2,Al2O3,HfO2,ZrO2,MgO,SrO,BaO,Y2O3,La2O3,及びTiO2から成るグループから選択される添加物の蒸気に接触させる結果、誘電体積層構造の露出表面を、金属酸化物の蒸気、及び添加物の蒸気に接触させることによって、前記添加物が約1原子量%〜約50原子量%だけ含有する電極を形成する工程とを備える、方法。 - 誘電体積層構造の露出表面を金属酸化物の蒸気に接触させる工程、及び誘電体積層構造の露出表面を添加物の蒸気に接触させる工程では更に、電子ビーム蒸着法、スパッタリング法、及びパルスレーザ蒸着法から成るグループから選択される物理気相堆積法を使用する、請求項1記載の方法。
- 誘電体積層構造の露出表面を金属酸化物の蒸気に接触させる工程、及び誘電体積層構造の露出表面を添加物の蒸気に接触させる工程では更に、約5原子量%〜約20原子量%の添加物を含有する電極を形成する、請求項1記載の方法。
- 誘電体積層構造の露出表面を金属酸化物の蒸気に接触させる工程、及び誘電体積層構造の露出表面を添加物の蒸気に接触させる工程では更に、最高約1000℃までの温度でほぼ安定した状態を維持する電極を形成する、請求項1記載の方法。
- 更に、電極をCMOS素子に形成する、請求項1記載の方法。
- 更に、電極をp−MOS素子電極金属構造として形成する、請求項1記載の方法。
- 更に、約5eVよりも大きい表面仕事関数を持つ電極を形成する、請求項1記載の方法。
- 電極は、PVD法及びMOCVD法により形成されるホスト導電性金属酸化物及び添加物の均一混合物を含む、請求項1記載の方法。
- 更に、電極をゲート電極として形成する、請求項1記載の方法。
- 電極の仕事関数を調整するための方法であって、
露出表面を持つ高k誘電体積層構造を形成する工程と、
高k誘電体積層構造の露出表面を、RuOx,IrOx,ReOx,MoOx,WOx,VOx,及びPdOxから成るグループから選択される金属酸化物の蒸気に接触させる工程と、
誘電体積層構造の露出表面を、SiO2,Al2O3,HfO2,ZrO2,MgO,SrO,BaO,Y2O3,La2O3,及びTiO2から成るグループから選択される添加物の蒸気に接触させる工程と、
高k誘電体積層構造の露出表面と、金属酸化物の蒸気及び添加物の蒸気との接触を維持して、添加物が約1原子量%〜約50原子量%だけ電極に含まれるように電極を形成する工程と、
所望の仕事関数を実現すべく、電極に含まれる添加物の量を制御する工程とを備える、方法。 - 含まれる添加物の量を制御する工程では更に、電極に含まれる添加物の量を制御して、少なくとも5eVの仕事関数を実現する、請求項10記載の方法。
- 更に、設定k値を有する高k誘電体積層構造を形成し、そして所望の仕事関数を有する電極を形成して、複合誘電体積層構造及び電極が約5.0eV〜約5.4eVの間の電子仕事関数を持つようにする、請求項10記載の方法。
- 高k誘電体ゲート積層構造に使用される電極であって、前記電極は、x,y,z,a,b,及びcを実数とする場合、RuOx,IrOy,ReOz,MoOa,WOb,VOx,及びPdOcから成るグループから選択される材料を含む金属酸化物と、
金属酸化物内に分散し、かつSiO2,Al2O3,HfO2,ZrO2,MgO,SrO,BaO,Y2O3,La2O3,及びTiO2から成るグループから選択される添加物と、を含み、前記添加物は約1原子量%〜約50原子量%だけ含まれる、電極。 - 前記添加物は約5原子量%〜約20原子量%だけ含まれる、請求項13記載の電極。
- 金属酸化物は、最高約1000℃までの温度でほぼ安定した状態を維持する、請求項13記載の電極。
- 電極はCMOS素子に配置される、請求項13記載の電極。
- 電極はp−MOS電極構造を含む、請求項13記載の電極。
- 金属酸化物及び添加物を組み合わせて、約5eVよりも大きい表面仕事関数を実現する、請求項13記載の電極。
- 電極は、PVD法及びALD法により形成されるホスト導電性金属酸化物及び添加物から成る積層構造を含む、請求項13記載の電極。
- 電極はゲート電極を含む、請求項13記載の電極。
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US11/092,469 US7241691B2 (en) | 2005-03-28 | 2005-03-28 | Conducting metal oxide with additive as p-MOS device electrode |
US11/092,469 | 2005-03-28 | ||
PCT/US2006/005486 WO2006104585A2 (en) | 2005-03-28 | 2006-02-16 | Conducting metal oxide with additive as p-mos device electrode |
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JP2015535146A (ja) * | 2012-11-20 | 2015-12-07 | マイクロン テクノロジー, インク. | トランジスタ、メモリセルおよび半導体構造 |
JP2019079907A (ja) * | 2017-10-24 | 2019-05-23 | 東京エレクトロン株式会社 | 半導体装置およびcmosトランジスタ |
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US7510956B2 (en) * | 2006-01-30 | 2009-03-31 | Fressscale Semiconductor, Inc. | MOS device with multi-layer gate stack |
US20090008725A1 (en) * | 2007-07-03 | 2009-01-08 | International Business Machines Corporation | Method for deposition of an ultra-thin electropositive metal-containing cap layer |
CN107731909A (zh) * | 2017-09-30 | 2018-02-23 | 西安电子科技大学 | 基于MoO3/Al2O3双层栅介质的金刚石场效应晶体管及制作方法 |
CN107731910A (zh) * | 2017-09-30 | 2018-02-23 | 西安电子科技大学 | V2O5/Al2O3双层栅介质的金刚石场效应晶体管及制作方法 |
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- 2006-02-16 KR KR1020077022172A patent/KR101246640B1/ko not_active Expired - Fee Related
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JP2015535146A (ja) * | 2012-11-20 | 2015-12-07 | マイクロン テクノロジー, インク. | トランジスタ、メモリセルおよび半導体構造 |
US10943986B2 (en) | 2012-11-20 | 2021-03-09 | Micron Technology, Inc. | Transistors, memory cells and semiconductor constructions comprising ferroelectric gate dielectric |
US11594611B2 (en) | 2012-11-20 | 2023-02-28 | Micron Technology, Inc. | Transistors, memory cells and semiconductor constructions |
JP2019079907A (ja) * | 2017-10-24 | 2019-05-23 | 東京エレクトロン株式会社 | 半導体装置およびcmosトランジスタ |
Also Published As
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US20060216934A1 (en) | 2006-09-28 |
TWI416596B (zh) | 2013-11-21 |
WO2006104585A3 (en) | 2007-11-15 |
JP5107227B2 (ja) | 2012-12-26 |
US7241691B2 (en) | 2007-07-10 |
TW200703458A (en) | 2007-01-16 |
KR101246640B1 (ko) | 2013-03-25 |
KR20070114787A (ko) | 2007-12-04 |
WO2006104585A2 (en) | 2006-10-05 |
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