JP2010004087A - カーボンナノチューブを利用した半導体素子の配線形成方法およびその方法により製造された半導体素子 - Google Patents
カーボンナノチューブを利用した半導体素子の配線形成方法およびその方法により製造された半導体素子 Download PDFInfo
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 72
- 239000004065 semiconductor Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title claims abstract description 58
- 239000002041 carbon nanotube Substances 0.000 title claims abstract description 57
- 229910021393 carbon nanotube Inorganic materials 0.000 title claims abstract description 57
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 15
- 230000000149 penetrating effect Effects 0.000 claims abstract 2
- 229910052751 metal Inorganic materials 0.000 claims description 54
- 239000002184 metal Substances 0.000 claims description 54
- 239000007789 gas Substances 0.000 claims description 31
- 230000003197 catalytic effect Effects 0.000 claims description 28
- 239000000758 substrate Substances 0.000 claims description 16
- 239000010409 thin film Substances 0.000 claims description 16
- 239000003054 catalyst Substances 0.000 claims description 15
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 14
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 9
- 229910052723 transition metal Inorganic materials 0.000 claims description 8
- 150000003624 transition metals Chemical class 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052786 argon Inorganic materials 0.000 claims description 7
- 229910052710 silicon Inorganic materials 0.000 claims description 7
- 239000010703 silicon Substances 0.000 claims description 7
- 229910001873 dinitrogen Inorganic materials 0.000 claims description 6
- 239000012782 phase change material Substances 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000005530 etching Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052759 nickel Inorganic materials 0.000 claims description 5
- 229910052763 palladium Inorganic materials 0.000 claims description 5
- 229910052697 platinum Inorganic materials 0.000 claims description 5
- 239000000843 powder Substances 0.000 claims description 5
- 229910052721 tungsten Inorganic materials 0.000 claims description 5
- 229910052727 yttrium Inorganic materials 0.000 claims description 5
- 238000000313 electron-beam-induced deposition Methods 0.000 claims description 4
- 229910052737 gold Inorganic materials 0.000 claims description 4
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 4
- 229920002120 photoresistant polymer Polymers 0.000 claims description 4
- 238000005229 chemical vapour deposition Methods 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000002230 thermal chemical vapour deposition Methods 0.000 claims description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- 230000010354 integration Effects 0.000 abstract description 7
- 230000003213 activating effect Effects 0.000 abstract description 5
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 7
- 238000000635 electron micrograph Methods 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 238000001020 plasma etching Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000027756 respiratory electron transport chain Effects 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 1
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 description 1
- 239000005977 Ethylene Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002071 nanotube Substances 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
【解決手段】半導体素子の電極120表面を前処理して活性化させる段階と、電極の活性化した表面122上に絶縁層130を形成した後、電極の活性化した表面の一部を露出させるために絶縁層を貫通するコンタクトホール132を形成する段階と、コンタクトホールを通じて電極の活性化した表面に炭素が含まれているガスを供給して前記電極の活性化した表面からカーボンナノチューブ140を成長させて配線を形成する段階と、を具備する半導体素子の配線形成方法およびその方法により製造された半導体素子。
【選択図】図1D
Description
用して半導体素子の配線を形成する方法、およびその方法により製造された半導体素子に
関する。
また、前記(a1)段階は、反応性イオンエッチングによって行ってもよい。
221 ソース電極
222 第1活性層
223 ドレーン電極
224 ゲート電極
230 第1絶縁層
232 第1コンタクトホール
240 第1カーボンナノチューブ
250 中間電極
252 第2活性層
260 第2絶縁層
262 第2コンタクトホール
270 第2カーボンナノチューブ
280 メモリ薄膜
290 第3絶縁層
292 第3コンタクトホール
295 上部電極
Claims (18)
- (a2)半導体素子の電極の表面に触媒金属層を形成する段階と、
(b2)前記触媒金属層上に絶縁層を形成した後、前記触媒金属層の一部を露出させるために前記絶縁層を貫通するコンタクトホールを形成する段階と、
(c)前記コンタクトホールを通じて前記触媒金属層に炭素含有ガスを供給して前記触媒金属層からカーボンナノチューブを成長させて配線を形成する段階と、を具備することを特徴とする半導体素子の配線形成方法。 - 前記(a2)段階は、RFマグネトロンスパッタまたは電子ビーム蒸着装置によって触媒金属を前記電極の表面に所定厚さに蒸着する段階であることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(a2)段階は、触媒金属の粉末を前記電極の表面にスプレーすることにより所定厚さに塗布して前記触媒金属層を形成することを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(a2)段階で、前記触媒金属層は、1〜100nmの厚さに形成されることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(a2)段階で、前記触媒金属層は、W、Ni、Fe、Co、Y、Pd、PtおよびAuよりなる群から選択される少なくとも一つの遷移金属よりなることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(b2)段階で、前記絶縁層は、酸化物よりなることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(b2)段階で、パターニングされたフォトレジストをエッチングマスクとして前記絶縁層を異方性エッチングすることによって前記コンタクトホールを形成することを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(b2)段階で、前記コンタクトホールは1〜100nmの直径を持つように形成されることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(c)段階は、500〜900℃の温度で行われることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(c)段階で、前記炭素含有ガスは、CH4、C2H2、C2H4、C2H6、COおよびCO2よりなる群から選択される少なくとも一つのガスであることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(c)段階で、前記炭素含有ガスは、水素ガス、窒素ガスおよびアルゴンガスよりなる群から選択される少なくとも一つのガスと共に供給されることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 前記(c)段階は、熱化学気相蒸着法またはプラズマ化学気相蒸着法により行われることを特徴とする請求項1に記載の半導体素子の配線形成方法。
- 基板と、
前記基板に形成された電極と、
前記電極の表面に形成された触媒金属層と、
前記触媒金属層上に形成され、前記触媒金属層の一部を露出させるコンタクトホールを有する絶縁層と、
前記コンタクトホールの内部で、前記触媒金属層から成長して電子移動の通路となる配線をなすカーボンナノチューブと、
前記絶縁層の上部に形成されて前記カーボンナノチューブと電気的に連結されるメモリ薄膜または他の電極と、を具備することを特徴とする半導体素子。 - 前記触媒金属層は、W、Ni、Fe、Co、Y、Pd、PtおよびAuよりなる群から選択される少なくとも一つの遷移金属をRFマグネトロンスパッタまたは電子ビーム蒸着装置によって前記電極の表面に蒸着することによって形成されたことを特徴とする請求項13に記載の半導体素子。
- 前記触媒金属層は、W、Ni、Fe、Co、Y、Pd、PtおよびAuよりなる群から選択される少なくとも一つの遷移金属の粉末を前記電極の表面に塗布することによって形成されたことを特徴とする請求項13に記載の半導体素子。
- 前記基板は、シリコンまたは酸化物よりなることを特徴とする請求項13に記載の半導体素子。
- 前記電極は、MOSFETのソース電極であることを特徴とする請求項13に記載の半導体素子。
- 前記メモリ薄膜は、相変化物質よりなることを特徴とする請求項13に記載の半導体素子。
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- 2004-05-06 JP JP2004137261A patent/JP4777619B2/ja not_active Expired - Lifetime
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JP2010228970A (ja) * | 2009-03-27 | 2010-10-14 | Nippon Telegr & Teleph Corp <Ntt> | カーボンナノチューブの製造方法およびカーボンナノチューブ構造 |
Also Published As
Publication number | Publication date |
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KR20040094065A (ko) | 2004-11-09 |
KR100982419B1 (ko) | 2010-09-15 |
US20060046445A1 (en) | 2006-03-02 |
CN1542920A (zh) | 2004-11-03 |
JP4777619B2 (ja) | 2011-09-21 |
US20040219773A1 (en) | 2004-11-04 |
EP1473767A2 (en) | 2004-11-03 |
US7060543B2 (en) | 2006-06-13 |
EP1473767B1 (en) | 2012-05-09 |
JP5264672B2 (ja) | 2013-08-14 |
CN100369205C (zh) | 2008-02-13 |
JP2004336054A (ja) | 2004-11-25 |
EP1473767A3 (en) | 2006-05-10 |
US7247897B2 (en) | 2007-07-24 |
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