JP6723116B2 - 原子層成長装置および原子層成長方法 - Google Patents
原子層成長装置および原子層成長方法 Download PDFInfo
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- 238000000034 method Methods 0.000 title claims description 46
- 239000000463 material Substances 0.000 claims description 216
- 239000010408 film Substances 0.000 claims description 212
- 239000011261 inert gas Substances 0.000 claims description 161
- 230000008021 deposition Effects 0.000 claims description 144
- 239000007789 gas Substances 0.000 claims description 138
- 230000003449 preventive effect Effects 0.000 claims description 81
- 239000000758 substrate Substances 0.000 claims description 74
- 230000002093 peripheral effect Effects 0.000 claims description 65
- 239000012495 reaction gas Substances 0.000 claims description 35
- 239000010409 thin film Substances 0.000 claims description 32
- 239000002994 raw material Substances 0.000 claims description 26
- 230000015572 biosynthetic process Effects 0.000 claims description 25
- 230000000181 anti-adherent effect Effects 0.000 claims description 21
- 238000010926 purge Methods 0.000 claims description 20
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- 238000009751 slip forming Methods 0.000 claims 1
- 238000000151 deposition Methods 0.000 description 126
- 239000010410 layer Substances 0.000 description 69
- 239000002245 particle Substances 0.000 description 13
- 239000011521 glass Substances 0.000 description 12
- 230000001681 protective effect Effects 0.000 description 12
- 238000012545 processing Methods 0.000 description 9
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 8
- 230000002265 prevention Effects 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000005229 chemical vapour deposition Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000001312 dry etching Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005192 partition Methods 0.000 description 2
- 230000002829 reductive effect Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
- -1 Al source) Substances 0.000 description 1
- 229910017109 AlON Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
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- 230000005669 field effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000036961 partial effect Effects 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000000638 solvent extraction Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Description
図1を参照して、本実施の形態の原子層成長装置10の構成を説明する。
次に、原子層成長装置10を用いた薄膜形成の処理手順(原子層成長方法)を説明する。
11 成膜容器
14 ステージ
14A ステージ周縁部
14B ステージ基板保持部
15 周縁部ステージ防着材(第1のステージ防着材)
16 側部ステージ防着材(第2のステージ防着材)
17 ステージストッパー
20 ガス導入部
21 インジェクタ
22 インジェクタ防着材
24 ステージストッパー防着材
24A ステージストッパー防着材外周部(第1のステージストッパー防着材)
24B ステージストッパー防着材中部(第2のステージストッパー防着材)
24C ステージストッパー防着材内周部(第3のステージストッパー防着材)
61 不活性ガス供給部
63 上部不活性ガス供給口(第1の不活性ガス供給口)
64A 上部不活性ガス供給路(第1の不活性ガス供給路)
64B 上部不活性ガス供給路(第1の不活性ガス供給路)
66 下部不活性ガス供給口(第2の不活性ガス供給口)
67 下部不活性ガス供給路(第2の不活性ガス供給路)
69 中部不活性ガス供給口(第3の不活性ガス供給口)
70 中部不活性ガス供給路(第3の不活性ガス供給路)
100 基板
110 原料ガス
112 パージガス
114 反応ガス
Claims (19)
- 基板に成膜処理が行われる成膜容器と、
前記成膜容器内に設置され、前記基板を保持する上下移動可能なステージと、
前記ステージの上昇を止め、前記ステージとの接触により、前記成膜処理が行われる成膜空間と、前記基板の搬送が行われる搬送空間と、を区画するステージストッパーと、
前記ステージの周縁部を覆う第1のステージ防着材と、
前記ステージストッパー上に設置されたステージストッパー防着材と、
を有し、
前記ステージストッパー防着材は、前記ステージストッパーの基板側の側面を覆うとともに前記第1のステージ防着材に向かって延びる部分を備えている、原子層成長装置。 - 請求項1に記載の原子層成長装置において、
前記ステージストッパー防着材は、
前記ステージストッパーより上方における前記成膜容器の側壁の内面を覆う第1のステージストッパー防着材と、
前記ステージストッパーの上面を覆う第2のステージストッパー防着材と、
前記ステージストッパーの基板側の側面を覆う第3のステージストッパー防着材と、
を有する、原子層成長装置。 - 請求項2に記載の原子層成長装置において、
前記第1、第2および第3のステージストッパー防着材が一体に形成されている、原子層成長装置。 - 請求項2に記載の原子層成長装置において、
前記ステージと前記第3のステージストッパー防着材との間に位置し、かつ前記ステージの側部を覆う第2のステージ防着材が設けられている、原子層成長装置。 - 請求項1に記載の原子層成長装置において、
前記ステージストッパー防着材は、平面視で四角形を成す前記成膜容器の4つの内壁に沿って配置された第1のステージストッパー防着材を備え、
前記第1のステージストッパー防着材は、それぞれの前記内壁に沿って配置された4つの板状部材からなり、
前記4つの板状部材は、それぞれ隣り合う前記板状部材同士が接触している、原子層成長装置。 - 請求項5に記載の原子層成長装置において、
前記第1のステージストッパー防着材を構成する前記4つの板状部材のそれぞれは、隣り合う前記板状部材間に空間を有していない、原子層成長装置。 - 請求項5に記載の原子層成長装置において、
前記成膜容器の前記内壁と、前記ステージストッパー防着材と、の間に不活性ガスを供給可能な隙間を有している、原子層成長装置。 - 請求項2に記載の原子層成長装置において、
前記ステージストッパーは、
前記第1のステージストッパー防着材と前記成膜容器との隙間により形成された第1の不活性ガス供給路に不活性ガスを供給する第1の不活性ガス供給口と、
前記第3のステージストッパー防着材と前記ステージストッパーとの隙間、および前記第3のステージストッパー防着材と前記第1のステージ防着材との隙間により形成された第2の不活性ガス供給路に前記不活性ガスを供給する第2の不活性ガス供給口と、
を備え、
前記第1の不活性ガス供給口および前記第2の不活性ガス供給口に前記不活性ガスを供給する不活性ガス供給路を前記ステージストッパーおよび前記成膜容器に備え、
前記不活性ガス供給路に前記不活性ガスを供給する不活性ガス供給部を前記成膜容器に備える、原子層成長装置。 - 請求項8に記載の原子層成長装置において、
前記ステージストッパーは、
前記第2のステージストッパー防着材と、前記ステージストッパーの上面と、の隙間に前記不活性ガスを供給し、かつ、前記不活性ガス供給路に繋がる第3の不活性ガス供給口を備える、原子層成長装置。 - 請求項8に記載の原子層成長装置において、
前記第1の不活性ガス供給口は、前記ステージストッパーの上面の周囲で全周に沿って複数個または全周に亘って連続して形成されている、原子層成長装置。 - 請求項8に記載の原子層成長装置において、
前記第2の不活性ガス供給口は、前記ステージストッパーの基板側の側面の全周に沿って複数個または全周に亘って連続して形成されている、原子層成長装置。 - 請求項9に記載の原子層成長装置において、
前記第3の不活性ガス供給口は、前記ステージストッパーの上面の全周に沿って複数個または全周に亘って連続して形成されている、原子層成長装置。 - 請求項1に記載の原子層成長装置において、
第1開口部を備え、前記成膜容器のガス導入側開口部と前記第1開口部との位置を合わせて前記成膜容器の外壁に設けられたインジェクタと、
前記インジェクタより前記成膜容器の内側に位置するように前記ガス導入側開口部に挿入して取り付けられたインジェクタ防着材と、
第2開口部を備え、前記成膜容器のガス排気側開口部と前記第2開口部との位置を合わせて前記成膜容器の外壁に設けられた排気フランジと、
前記排気フランジより前記成膜容器の内側に位置するように前記ガス排気側開口部に挿入して取り付けられた排気防着材と、
を備え、
前記インジェクタ防着材および前記排気防着材のそれぞれは、前記成膜容器の内側に、前記ガス導入側開口部および前記ガス排気側開口部より大きいフランジを有している、原子層成長装置。 - 請求項13に記載の原子層成長装置において、
前記第1のステージストッパー防着材は、前記インジェクタ防着材および前記排気防着材を挿入して取り付け可能な防着材開口部を1箇所もしくは複数箇所備え、
前記フランジは、前記防着材開口部より大きい、原子層成長装置。 - 請求項1に記載の原子層成長装置において、
前記ステージと対向して設けられた平板電極を備え、
前記平板電極の側方に前記平板電極を支持する絶縁支持体を備え、
前記絶縁支持体を保持する天板支持部の周縁部に、前記天板支持部および前記絶縁支持体を覆う絶縁防着材を備える、原子層成長装置。 - (a)成膜容器内に設けられたステージ上に基板を載置する工程、
(b)前記(a)工程の後、前記成膜容器に設けられたガス導入部から前記成膜容器内に原料ガスを導入して、前記基板上に前記原料ガスを吸着させる工程、
(c)前記(b)工程の後、前記ガス導入部から前記成膜容器内にパージガスを導入して、前記原料ガスを前記成膜容器外に排出する工程、
(d)前記(c)工程の後、前記ガス導入部から前記成膜容器内に反応ガスを導入して、前記基板上に前記反応ガスを供給し、前記基板の表面に所望の薄膜を形成する工程、
(e)前記(d)工程の後、前記ガス導入部から前記成膜容器内にパージガスを導入して、前記反応ガスを前記成膜容器外に排出する工程、
を有し、
前記(b)〜(e)工程の間、前記ステージの側部および周縁部を覆うステージ防着材に沿って前記成膜容器内に不活性ガスを流す、原子層成長方法。 - 請求項16に記載の原子層成長方法において、
前記ステージの上昇を止めるステージストッパー上に配置されたステージストッパー防着材と、前記成膜容器の内壁との隙間に、前記ステージストッパーに形成された不活性ガス供給路から分岐した第1の不活性ガス供給路を介して前記不活性ガスを供給する、原子層成長方法。 - 請求項17に記載の原子層成長方法において、
前記不活性ガス供給路における第2の不活性ガス供給路を介して前記不活性ガスを前記ステージの側部に供給する、原子層成長方法。 - 請求項17に記載の原子層成長方法において、
前記ステージストッパー防着材と、前記ステージストッパーとの隙間に、前記ステージストッパーに形成された前記不活性ガス供給路と繋がる第3の不活性ガス供給口および第3の不活性ガス供給路を介して前記不活性ガスを供給する、原子層成長方法。
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