JP6153401B2 - 気相成長装置および気相成長方法 - Google Patents
気相成長装置および気相成長方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 68
- 239000007789 gas Substances 0.000 claims description 574
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 66
- 229910052736 halogen Inorganic materials 0.000 claims description 49
- 150000002367 halogens Chemical class 0.000 claims description 49
- 239000004065 semiconductor Substances 0.000 claims description 44
- 238000001947 vapour-phase growth Methods 0.000 claims description 35
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 29
- 238000004140 cleaning Methods 0.000 claims description 19
- 229910052751 metal Inorganic materials 0.000 claims description 19
- 239000002184 metal Substances 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 17
- 229910021529 ammonia Inorganic materials 0.000 claims description 16
- 150000004767 nitrides Chemical class 0.000 claims description 16
- 239000011261 inert gas Substances 0.000 claims description 13
- 239000001257 hydrogen Substances 0.000 claims description 12
- 229910052739 hydrogen Inorganic materials 0.000 claims description 12
- 239000000460 chlorine Substances 0.000 claims description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 claims description 5
- 229910052801 chlorine Inorganic materials 0.000 claims description 5
- 235000012431 wafers Nutrition 0.000 description 44
- 229910002601 GaN Inorganic materials 0.000 description 16
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 15
- 238000000926 separation method Methods 0.000 description 14
- 230000015572 biosynthetic process Effects 0.000 description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 10
- 238000010438 heat treatment Methods 0.000 description 9
- 239000013078 crystal Substances 0.000 description 8
- 239000012530 fluid Substances 0.000 description 8
- 239000007795 chemical reaction product Substances 0.000 description 7
- 238000009826 distribution Methods 0.000 description 7
- 230000005484 gravity Effects 0.000 description 7
- 239000012159 carrier gas Substances 0.000 description 6
- 239000002245 particle Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 5
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- 229910052710 silicon Inorganic materials 0.000 description 5
- 239000010703 silicon Substances 0.000 description 5
- 150000002431 hydrogen Chemical class 0.000 description 4
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 4
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 4
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 3
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000007865 diluting Methods 0.000 description 3
- 229910052733 gallium Inorganic materials 0.000 description 3
- 229910000077 silane Inorganic materials 0.000 description 3
- 230000003068 static effect Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- -1 ammonium halide Chemical class 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000001307 helium Substances 0.000 description 2
- 229910052734 helium Inorganic materials 0.000 description 2
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 2
- IBEFSUTVZWZJEL-UHFFFAOYSA-N trimethylindium Chemical compound C[In](C)C IBEFSUTVZWZJEL-UHFFFAOYSA-N 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- SLLGVCUQYRMELA-UHFFFAOYSA-N chlorosilicon Chemical compound Cl[Si] SLLGVCUQYRMELA-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- BUMGIEFFCMBQDG-UHFFFAOYSA-N dichlorosilicon Chemical compound Cl[Si]Cl BUMGIEFFCMBQDG-UHFFFAOYSA-N 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009257 reactivity Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- ZDHXKXAHOVTTAH-UHFFFAOYSA-N trichlorosilane Chemical compound Cl[SiH](Cl)Cl ZDHXKXAHOVTTAH-UHFFFAOYSA-N 0.000 description 1
- 239000005052 trichlorosilane Substances 0.000 description 1
- JOHWNGGYGAVMGU-UHFFFAOYSA-N trifluorochlorine Chemical compound FCl(F)F JOHWNGGYGAVMGU-UHFFFAOYSA-N 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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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
- C23C16/45563—Gas nozzles
- C23C16/45565—Shower nozzles
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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
- C23C16/45563—Gas nozzles
- C23C16/45574—Nozzles for more than one gas
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B25/00—Single-crystal growth by chemical reaction of reactive gases, e.g. chemical vapour-deposition growth
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- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
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Description
本実施の形態の気相成長装置は、窒化物の成膜を行う反応室と、ハロゲン系ガスを供給する第1のガス供給路と、アンモニアガスを供給する第2のガス供給路と、反応室の上部に配置され、内部で反応室に至るまで、第1のガス供給路からハロゲン系ガスが供給されるガス流路と、第2のガス供給路からアンモニアガスが供給されるガス流路が分離され、反応室内にガスを供給するシャワープレートと、反応室内のシャワープレート下方に設けられ、基板を載置可能な支持部と、を備える。
P+0.5ρv2=P0
ここで、0.5ρv2が動圧である。流体の速度vが上がるほど動圧が大きくなり、静圧(P)が低下する、いわゆるベンチュリ効果が生ずる。例えば、アンモニアガスの流速が、分離ガスの水素ガスの流速より大きいと、アンモニアガスを噴出するガス噴出孔近傍の静圧が下がり、水素ガスが引き寄せられ乱流が生じやすくなる。
本実施の形態の気相成長装置は、第1のガス供給源(B)が、シリコン膜成長のための、シリコンとハロゲン元素を含むソースガス、例えば、シリコンと塩素を含む塩化シランガス(SiHxCly(x、yは正の整数))であること以外は、第1の実施の形態と同様である。したがって、第1の実施の形態と重複する内容については、記述を省略する。
本実施の形態の気相成長装置は、第1〜第3の横方向ガス流路が階層構造になっていない。すなわち、第1〜第3の水平面が同一水平面であること以外は、第1または第2の実施の形態と同様である。したがって、第1または第2の実施の形態と重複する内容については、記述を省略する。
12 支持部
14 回転体ユニット
31 第1のガス供給路
32 第2のガス供給路
33 第3のガス供給路
51a 第1のガス供給源(A)
51b 第1のガス供給源(B)
52 第2のガス供給源
53 第3のガス供給源
100 シャワープレート
101 第1の横方向ガス流路
102 第2の横方向ガス流路
103 第3の横方向ガス流路
111 第1のガス噴出孔
112 第2のガス噴出孔
113 第3のガス噴出孔
121 第1の縦方向ガス流路
122 第2の縦方向ガス流路
123 第3の縦方向ガス流路
Claims (3)
- 窒化物の成膜を行う反応室と、
ハロゲン系ガスを供給する第1のガス供給路と、
アンモニアガスを供給する第2のガス供給路と、
前記反応室の上部に配置され、内部で前記反応室に至るまで、前記第1のガス供給路からハロゲン系ガスが供給されるガス流路と、前記第2のガス供給路からアンモニアガスが供給されるガス流路が分離され、前記反応室内にガスを供給するシャワープレートと、
前記反応室内の前記シャワープレート下方に設けられ、基板を載置可能な支持部と、
第3のガス供給路と、
を備え、
前記第1のガス供給路と前記第3のガス供給路のいずれか一方に、水素ガスまたは不活性ガスが供給され、前記第1のガス供給路と前記第3のガス供給路の他方に、有機金属を含むガスが供給され、
前記シャワープレートが、第1の水平面内に配置され互いに平行に延伸する複数の第1の横方向ガス流路と、前記第1の横方向ガス流路に接続され縦方向に延伸し前記反応室側に第1のガス噴出孔を有する複数の第1の縦方向ガス流路と、第2の水平面内に配置され前記第1の横方向ガス流路と同一方向に互いに平行に延伸する複数の第2の横方向ガス流路と、前記第2の横方向ガス流路に接続され前記反応室側に第2のガス噴出孔を有する複数の第2の縦方向ガス流路と、第3の水平面内に配置され前記第1の横方向ガス流路と同一方向に互いに平行に延伸する複数の第3の横方向ガス流路と、前記第3の横方向ガス流路に接続され縦方向に延伸し前記反応室側に第3のガス噴出孔を有する複数の第3の縦方向ガス流路を有し、
前記第1のガス供給路が前記第1の横方向ガス流路に接続され、
前記第2のガス供給路が前記第2の横方向ガス流路に接続され、
前記第3のガス供給路が前記第3の横方向ガス流路に接続され、
前記ハロゲン系ガスが、塩素を含むクリーニングガスであることを特徴とする気相成長装置。 - 前記第2および第3の水平面が前記第1の水平面より上方に位置し、
前記第2および第3の縦方向ガス流路が前記第1の横方向ガス流路の間を通って縦方向に延伸することを特徴とする請求項1記載の気相成長装置。 - 窒化物の成膜を行う反応室と、
ハロゲン系ガスを供給する第1のガス供給路と、
アンモニアガスを供給する第2のガス供給路と、
前記反応室の上部に配置され、内部で前記反応室に至るまで、前記第1のガス供給路からハロゲン系ガスが供給されるガス流路と、前記第2のガス供給路からアンモニアガスが供給されるガス流路が分離され、前記反応室内にガスを供給するシャワープレートと、
前記反応室内の前記シャワープレート下方に設けられ、基板を載置可能な支持部と、
第3のガス供給路と、
を有し、
前記シャワープレートが、第1の水平面内に配置され互いに平行に延伸する複数の第1の横方向ガス流路と、前記第1の横方向ガス流路に接続され縦方向に延伸し前記反応室側に第1のガス噴出孔を有する複数の第1の縦方向ガス流路と、第2の水平面内に配置され前記第1の横方向ガス流路と同一方向に互いに平行に延伸する複数の第2の横方向ガス流路と、前記第2の横方向ガス流路に接続され前記反応室側に第2のガス噴出孔を有する複数の第2の縦方向ガス流路と、第3の水平面内に配置され前記第1の横方向ガス流路と同一方向に互いに平行に延伸する複数の第3の横方向ガス流路と、前記第3の横方向ガス流路に接続され縦方向に延伸し前記反応室側に第3のガス噴出孔を有する複数の第3の縦方向ガス流路を有し、
前記第1のガス供給路が前記第1の横方向ガス流路に接続され、
前記第2のガス供給路が前記第2の横方向ガス流路に接続され、
前記第3のガス供給路が前記第3の横方向ガス流路に接続されている気相成長装置を用い、
基板を前記反応室に搬入し、
有機金属を含むガスと、前記第2のガス供給路から供給されるアンモニアガスを、前記シャワープレートを介して前記反応室に供給し、基板上に窒化物半導体膜を成膜し、
前記窒化物半導体膜を成膜する際に、前記第1のガス供給路と前記第3のガス供給路のいずれか一方に、水素または不活性ガスを流して前記第1または第3のガス噴出孔から噴出し、前記第2のガス供給路にアンモニアを流して前記第2のガス噴出孔から噴出し、前記第1のガス供給路と前記第3のガス供給路の他方に、有機金属を含むガスを流して前記第1または第3のガス噴出孔から噴出し、
前記基板を前記反応室から搬出し、
前記第1のガス供給路から供給されるハロゲン系ガスを、前記シャワープレートを介して前記反応室に供給し、前記反応室をクリーニングし、
前記反応室をクリーニングする際に、前記第1のガス供給路から供給されるハロゲン系ガスを、前記第1のガス噴出孔から噴出し、
前記ハロゲン系ガスが、塩素を含むことを特徴とする気相成長方法。
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