JP2018533219A - 共形及び間隙充填型のアモルファスシリコン薄膜の堆積 - Google Patents
共形及び間隙充填型のアモルファスシリコン薄膜の堆積 Download PDFInfo
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- 229910021417 amorphous silicon Inorganic materials 0.000 title claims description 45
- 230000008021 deposition Effects 0.000 title description 33
- 238000011049 filling Methods 0.000 title description 5
- 239000010409 thin film Substances 0.000 title description 2
- 239000000758 substrate Substances 0.000 claims abstract description 140
- 238000000034 method Methods 0.000 claims abstract description 88
- 239000002243 precursor Substances 0.000 claims abstract description 40
- 238000000151 deposition Methods 0.000 claims abstract description 39
- 238000007872 degassing Methods 0.000 claims abstract description 36
- 238000005530 etching Methods 0.000 claims abstract description 12
- 231100000572 poisoning Toxicity 0.000 claims abstract description 9
- 230000000607 poisoning effect Effects 0.000 claims abstract description 9
- 239000007789 gas Substances 0.000 claims description 136
- 238000012545 processing Methods 0.000 claims description 107
- 239000000376 reactant Substances 0.000 claims description 19
- 239000011261 inert gas Substances 0.000 claims description 17
- 239000012686 silicon precursor Substances 0.000 claims description 14
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 claims description 11
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 10
- 239000001257 hydrogen Substances 0.000 claims description 10
- 229910052739 hydrogen Inorganic materials 0.000 claims description 10
- 238000003672 processing method Methods 0.000 claims description 10
- 239000013626 chemical specie Substances 0.000 claims description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 4
- 239000000460 chlorine Substances 0.000 claims description 4
- 229910052801 chlorine Inorganic materials 0.000 claims description 4
- 229920000548 poly(silane) polymer Polymers 0.000 claims description 4
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 229910052734 helium Inorganic materials 0.000 claims description 3
- GCOJIFYUTTYXOF-UHFFFAOYSA-N hexasilinane Chemical compound [SiH2]1[SiH2][SiH2][SiH2][SiH2][SiH2]1 GCOJIFYUTTYXOF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- CVLHDNLPWKYNNR-UHFFFAOYSA-N pentasilolane Chemical compound [SiH2]1[SiH2][SiH2][SiH2][SiH2]1 CVLHDNLPWKYNNR-UHFFFAOYSA-N 0.000 claims description 3
- VEDJZFSRVVQBIL-UHFFFAOYSA-N trisilane Chemical compound [SiH3][SiH2][SiH3] VEDJZFSRVVQBIL-UHFFFAOYSA-N 0.000 claims description 3
- LICVGLCXGGVLPA-UHFFFAOYSA-N disilanyl(disilanylsilyl)silane Chemical compound [SiH3][SiH2][SiH2][SiH2][SiH2][SiH3] LICVGLCXGGVLPA-UHFFFAOYSA-N 0.000 claims description 2
- 239000001307 helium Substances 0.000 claims description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 239000010408 film Substances 0.000 description 76
- 238000009826 distribution Methods 0.000 description 36
- 235000012431 wafers Nutrition 0.000 description 24
- 238000010926 purge Methods 0.000 description 17
- 238000005229 chemical vapour deposition Methods 0.000 description 12
- 239000010410 layer Substances 0.000 description 12
- 239000000463 material Substances 0.000 description 12
- 238000000429 assembly Methods 0.000 description 11
- 230000000712 assembly Effects 0.000 description 11
- 238000000231 atomic layer deposition Methods 0.000 description 11
- 230000002093 peripheral effect Effects 0.000 description 9
- 238000012546 transfer Methods 0.000 description 8
- 238000005755 formation reaction Methods 0.000 description 5
- 239000012528 membrane Substances 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
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- 239000003153 chemical reaction reagent Substances 0.000 description 4
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- 238000010586 diagram Methods 0.000 description 3
- 238000005429 filling process Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 238000000137 annealing Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000005137 deposition process Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000004518 low pressure chemical vapour deposition Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
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- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000004065 semiconductor Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910052814 silicon oxide Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000002123 temporal effect Effects 0.000 description 2
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- WYEMLYFITZORAB-UHFFFAOYSA-N boscalid Chemical compound C1=CC(Cl)=CC=C1C1=CC=CC=C1NC(=O)C1=CC=CN=C1Cl WYEMLYFITZORAB-UHFFFAOYSA-N 0.000 description 1
- 238000007385 chemical modification Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 238000012864 cross contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 239000007888 film coating Substances 0.000 description 1
- 238000009501 film coating Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000010574 gas phase reaction Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 238000006459 hydrosilylation reaction Methods 0.000 description 1
- 230000033444 hydroxylation Effects 0.000 description 1
- 238000005805 hydroxylation reaction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000011534 incubation Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 238000010943 off-gassing Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 150000004756 silanes Chemical class 0.000 description 1
- -1 silicon halide Chemical class 0.000 description 1
- 238000006884 silylation reaction Methods 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- LXEXBJXDGVGRAR-UHFFFAOYSA-N trichloro(trichlorosilyl)silane Chemical compound Cl[Si](Cl)(Cl)[Si](Cl)(Cl)Cl LXEXBJXDGVGRAR-UHFFFAOYSA-N 0.000 description 1
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- H01L21/02263—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase
- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/0228—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition deposition by cyclic CVD, e.g. ALD, ALE, pulsed CVD
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
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- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45523—Pulsed gas flow or change of composition over time
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- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/458—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for supporting substrates in the reaction chamber
- C23C16/4582—Rigid and flat substrates, e.g. plates or discs
- C23C16/4583—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally
- C23C16/4584—Rigid and flat substrates, e.g. plates or discs the substrate being supported substantially horizontally the substrate being rotated
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02109—Forming insulating materials on a substrate characterised by the type of layer, e.g. type of material, porous/non-porous, pre-cursors, mixtures or laminates
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- H01L21/02107—Forming insulating materials on a substrate
- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
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- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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Abstract
Description
Claims (15)
- 処理方法であって、
水素を含むアウトガス可能な化学種を有するアモルファスシリコン膜を形成するために、基板表面を前駆体に曝露することと、
前記アモルファスシリコン膜から前記アウトガス可能な化学種を除去して脱ガスされたアモルファスシリコン膜を形成するために、前記アモルファスシリコン膜を不活性脱ガス環境に曝露することとを含む、方法。 - 処理方法であって、
処理チャンバ内に基板表面を配置することであって、前記基板表面が、表面上に少なくとも1つのフィーチャを有し、前記少なくとも1つのフィーチャが、底部、上部、及び側壁を有する間隙を作り出す、基板表面を配置することと、
前記少なくとも1つのフィーチャ上に、水素を含むアウトガス可能な化学種を有するアモルファス膜を形成するために、前記基板表面を前駆体に曝露することと、
前記アモルファス膜からアウトガス可能な化学種を除去して脱ガスされたアモルファス膜を形成するために、前記基板表面を不活性脱ガス環境に曝露することと、
前記脱ガスされたアモルファス膜を所定の厚さに成長させるために、前記前駆体への曝露と前記不活性脱ガス環境への曝露とを反復することとを含む、方法。 - 前記前駆体がポリシランを含む、請求項1又は2に記載の方法。
- 前記ポリシランが、ジシラン、トリシラン、テトラシラン、イソテトラシラン、ネオペンタシラン、シクロペンタシラン、ヘキサシラン、又はシクロヘキサシランのうちの一又は複数を含む、請求項3に記載の方法。
- 前記前駆体が実質的にジシランのみを含む、請求項3に記載の方法。
- 前記脱ガス環境が実質的に不活性ガスから成る、請求項1又は2に記載の方法。
- 前記不活性ガスが、アルゴン、ヘリウム、及び窒素のうちの一又は複数を含む、請求項6に記載の方法。
- シリコン前駆体への曝露と前記脱ガス環境への曝露との間に、前記基板表面を反応体に曝露することであって、前記反応体が前記アモルファスシリコン膜の特性を改変する、反応体に曝露することを更に含む、請求項1又は2に記載の方法。
- 前記前駆体と前記脱ガス環境のそれぞれへの曝露が、約50 mTorrから約200Torrの範囲内の圧力、及び、約350°Cから約700°Cの範囲内の温度において行われる、請求項1又は2に記載の方法。
- 前記前駆体と前記脱ガス環境へのそれぞれの曝露が、約5Åから約20Åの範囲内の厚さだけ膜を成長させる、請求項1又は2に記載の方法。
- 堆積された前記アモルファスシリコン膜が、約80%以上の共形性を有する、請求項1又は2に記載の方法。
- 前記基板表面のフィーチャの上部における前記アモルファスシリコン膜の成長を抑制するために、前記基板表面を毒化剤に曝露することであって、前記毒化剤が、オプションで塩素含有種を含む、毒化剤に曝露することを更に含む、請求項1又は2に記載の方法。
- 前記基板表面のフィーチャの上部から、アモルファスシリコン膜をエッチングすることを更に含む、請求項1又は2に記載の方法。
- 前記前駆体への曝露と曝露の間に、前記フィーチャの前記上部から、前記アモルファスシリコンの少なくとも一部を優先的にエッチングすることを更に含む、請求項1又は2に記載の処理方法。
- 処理方法であって、
複数の区域を備える処理チャンバ内に、基板表面を有する基板を置くことであって、各区域がガスカーテンによって隣接する区域から分離される、基板を置くことと、
前記処理チャンバの第1区域において、前記基板表面の少なくとも一部分を第1プロセス条件に曝露することであって、前記第1プロセス条件が、前記基板表面に、水素を含むアウトガス可能な化学種を有するアモルファスシリコン膜を堆積させるための、ジシランを含む、第1プロセス条件に曝露することと、
前記基板表面を、前記処理チャンバの第2区域へと、ガスカーテンを通して横方向に動かすことと、
前記処理チャンバの前記第2区域において、前記基板表面を第2プロセス条件に曝露することであって、前記第2プロセス条件が、前記アウトガス可能な化学種を除去して脱ガスされたアモルファスシリコン膜を形成するために、前記アモルファスシリコン膜を脱ガスする、第2プロセス条件に曝露することと、
前記基板表面を、前記処理チャンバの第3区域へと、ガスカーテンを通して横方向に動かすことと、
所定の厚さの脱ガスされたアモルファスシリコン膜を形成するために、前記基板表面の横方向移動を含む、前記第1区域への曝露と前記第2区域への曝露とを反復することとを含む、方法。
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