JP7441244B2 - 低い粗さのダイヤモンドフィルムの堆積 - Google Patents
低い粗さのダイヤモンドフィルムの堆積 Download PDFInfo
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- JP7441244B2 JP7441244B2 JP2021568569A JP2021568569A JP7441244B2 JP 7441244 B2 JP7441244 B2 JP 7441244B2 JP 2021568569 A JP2021568569 A JP 2021568569A JP 2021568569 A JP2021568569 A JP 2021568569A JP 7441244 B2 JP7441244 B2 JP 7441244B2
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- 229910003460 diamond Inorganic materials 0.000 title claims description 64
- 239000010432 diamond Substances 0.000 title claims description 64
- 230000008021 deposition Effects 0.000 title description 12
- 239000000758 substrate Substances 0.000 claims description 89
- 239000007789 gas Substances 0.000 claims description 84
- 238000000034 method Methods 0.000 claims description 72
- 239000010410 layer Substances 0.000 claims description 65
- 239000000203 mixture Substances 0.000 claims description 33
- 238000000151 deposition Methods 0.000 claims description 26
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 16
- 229910052786 argon Inorganic materials 0.000 claims description 8
- 239000011261 inert gas Substances 0.000 claims description 8
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 239000001307 helium Substances 0.000 claims description 5
- 229910052734 helium Inorganic materials 0.000 claims description 5
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052754 neon Inorganic materials 0.000 claims description 5
- GKAOGPIIYCISHV-UHFFFAOYSA-N neon atom Chemical compound [Ne] GKAOGPIIYCISHV-UHFFFAOYSA-N 0.000 claims description 5
- 239000002356 single layer Substances 0.000 claims description 3
- 239000010408 film Substances 0.000 description 32
- 239000000463 material Substances 0.000 description 24
- 239000004065 semiconductor Substances 0.000 description 19
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 12
- 229910052710 silicon Inorganic materials 0.000 description 12
- 239000010703 silicon Substances 0.000 description 12
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 10
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 8
- 229910052814 silicon oxide Inorganic materials 0.000 description 8
- 229910003481 amorphous carbon Inorganic materials 0.000 description 7
- 150000003254 radicals Chemical class 0.000 description 7
- 239000006117 anti-reflective coating Substances 0.000 description 6
- 238000005530 etching Methods 0.000 description 6
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- 238000004380 ashing Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 230000003746 surface roughness Effects 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 4
- 238000005229 chemical vapour deposition Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 4
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- 235000012431 wafers Nutrition 0.000 description 4
- 239000013078 crystal Substances 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- 229910052732 germanium Inorganic materials 0.000 description 3
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 238000009616 inductively coupled plasma Methods 0.000 description 3
- 239000011810 insulating material Substances 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 238000004630 atomic force microscopy Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
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- 230000032798 delamination Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
- -1 for example Chemical class 0.000 description 2
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- 229910001092 metal group alloy Inorganic materials 0.000 description 2
- 150000002739 metals Chemical class 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 229920002120 photoresistant polymer Polymers 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000012808 vapor phase Substances 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 229910021417 amorphous silicon Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
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- 230000003247 decreasing effect Effects 0.000 description 1
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- 239000002019 doping agent Substances 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000001459 lithography Methods 0.000 description 1
- 239000002077 nanosphere Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000010899 nucleation Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000000992 sputter etching Methods 0.000 description 1
- 238000000427 thin-film deposition Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 229910001868 water Inorganic materials 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Description
Claims (16)
- ダイヤモンド層を基板上に堆積させる方法であって、
基板処理チャンバ内の混合ガス内にパルスプラズマを生成することであって、前記混合ガスは、前記混合ガスの20体積%から80体積%の範囲内のH2を含む第1のガス、CO2を含む第2のガス、CH4と、C2H2と、C2H4とからなる群から選択される第3のガス、及び不活性ガスを含む第4のガスを含み、前記第3のガスと前記第2のガスとは、合わせて前記混合ガスの3体積%から8体積%の範囲を占める、パルスプラズマを生成すること、並びに
厚さ、粗さ、硬度、及び弾性率を有するナノ結晶ダイヤモンド層を前記基板上に堆積させることを含む、方法。 - 前記不活性ガスが、ヘリウム(He)、窒素(N2)、ネオン(Ne)、アルゴン(Ar)、及びそれらの組み合わせからなる群から選択される、請求項1に記載の方法。
- 前記第3のガスがC2H2である、請求項1又は2に記載の方法。
- 前記第3のガスがC2H4である、請求項1又は2に記載の方法。
- 前記基板処理チャンバ内の前記混合ガス内に前記パルスプラズマを生成することは、2,000Wから12,000Wの範囲内のピーク電力でマイクロ波プラズマを使用して生じ、前記マイクロ波プラズマは、10Hzから300Hzの範囲内の周波数において、前記ピーク電力の10%から90%の範囲内でパルス化される、請求項1から4のいずれか一項に記載の方法。
- 前記基板処理チャンバ内の前記混合ガス内に前記パルスプラズマを生成することは、3kWから9kWの範囲内のピーク電力でマイクロ波プラズマを使用して生じ、前記マイクロ波プラズマは、40Hzから270Hzの範囲内の周波数において、前記ピーク電力の25%から80%の範囲内でパルス化される、請求項1から4のいずれか一項に記載の方法。
- 前記基板処理チャンバ内の前記混合ガスは、0.1Torrから1.0Torrの範囲内の圧力にある、請求項1から6のいずれか一項に記載の方法。
- 前記基板処理チャンバ内の前記混合ガスは、0.2Torrから0.8Torrの範囲内の圧力にある、請求項1から6のいずれか一項に記載の方法。
- 前記基板処理チャンバ内の前記混合ガスは、450℃から600℃の範囲内の温度にある、請求項1から8のいずれか一項に記載の方法。
- 前記基板処理チャンバ内の前記混合ガスは、500℃から550℃の範囲内の温度にある、請求項1から8のいずれか一項に記載の方法。
- 前記ナノ結晶ダイヤモンド層の前記粗さが、25nm rms未満である、請求項1から10のいずれか一項に記載の方法。
- 前記ナノ結晶ダイヤモンド層の前記粗さが、10nm rms未満である、請求項1から10のいずれか一項に記載の方法。
- 前記ナノ結晶ダイヤモンド層が単一層を含む、請求項1から12のいずれか一項に記載の方法。
- 前記基板の表面は、堆積される前記ナノ結晶ダイヤモンド層の下にナノ結晶ダイヤモンド層を含まない、請求項1から13のいずれか一項に記載の方法。
- 前記ナノ結晶ダイヤモンド層のヤング率が325GPaよりも大きい、請求項1から14のいずれか一項に記載の方法。
- 指示命令を含む非一過性のコンピュータ可読媒体であって、該指示命令は、基板処理チャンバのコントローラによって実行されたときに、方法によって、基板処理チャンバに、ダイヤモンド層を基板上に堆積することを実行させ、前記方法は、前記基板処理チャンバ内の混合ガス内にパルスマイクロ波プラズマを生成することを含み、前記混合ガスは、前記混合ガスの20体積%から80体積%の範囲内のH2を含む第1のガス、CO2を含む第2のガス、CH4と、C2H2と、C2H4とからなる群から選択される第3のガス、並びにヘリウム(He)、窒素(N2)、ネオン(Ne)、アルゴン(Ar)、及びそれらの組み合わせからなる群から選択される不活性ガスを含む第4のガスを含み、前記第3のガスと前記第2のガスとは合わせて前記混合ガスの3体積%から8体積%の範囲にあり、前記方法は更に、ナノ結晶ダイヤモンド層を前記基板上に堆積させることを含む、非一過性のコンピュータ可読媒体。
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PCT/US2021/055732 WO2022087054A1 (en) | 2020-10-23 | 2021-10-20 | Depositing low roughness diamond films |
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