JPWO2011062286A1 - 堆積膜形成装置 - Google Patents
堆積膜形成装置 Download PDFInfo
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- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 230000009471 action Effects 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
- 230000036760 body temperature Effects 0.000 description 1
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- 238000005260 corrosion Methods 0.000 description 1
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- 230000002542 deteriorative effect Effects 0.000 description 1
- MROCJMGDEKINLD-UHFFFAOYSA-N dichlorosilane Chemical compound Cl[SiH2]Cl MROCJMGDEKINLD-UHFFFAOYSA-N 0.000 description 1
- PZPGRFITIJYNEJ-UHFFFAOYSA-N disilane Chemical compound [SiH3][SiH3] PZPGRFITIJYNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000010494 dissociation reaction Methods 0.000 description 1
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- 229910052758 niobium Inorganic materials 0.000 description 1
- 229910052762 osmium Inorganic materials 0.000 description 1
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- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- ABTOQLMXBSRXSM-UHFFFAOYSA-N silicon tetrafluoride Chemical compound F[Si](F)(F)F ABTOQLMXBSRXSM-UHFFFAOYSA-N 0.000 description 1
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- 238000011144 upstream manufacturing Methods 0.000 description 1
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Abstract
Description
チャンバーと、該チャンバー内に位置している第1電極と、前記チャンバー内に前記第1電極と所定間隔を隔てて位置している第2電極とを備えた堆積膜形成装置であって、
前記第2電極は、電極基体と、該電極基体の上に配置された複数の電極板とを有しており、
該電極板は、前記第1電極と前記第2電極との間の空間に第1原料ガスを供給する第1供給部と、前記空間に第2原料ガスを供給する第2供給部と、前記第1供給部に接続されて前記第1原料ガスが導入される第1供給経路と、前記第2供給部に接続されて前記第2原料ガスが導入される第2供給経路とを有しており、
前記電極基体は、前記第1原料ガスを加熱する加熱手段と、前記第1供給経路に前記第1原料ガスを導入する第1導入経路と、前記第2供給経路に前記第2原料ガスを導入する第2導入経路とを有しており、
前記第2供給経路は、前記第2導入経路から前記第2原料ガスが導入される、前記第2供給部を有さない本流部と、該本流部から前記第2原料ガスが導入される、前記第2供給部を有する複数の支流部とを有しており、
互いに隣り合う前記電極板の隣接部に、前記第2導入経路と前記本流部との接続部が位置していることを特徴とする。
図1に示すように、堆積膜形成装置S1は、チャンバー1と、チャンバー1内に位置している第1電極7と、チャンバー1内に第1電極7と所定間隔を隔てて位置しており、シャワー電極として機能する第2電極2とを有する。ここで、第2電極2は主に複数の電極板2aおよびこれらの電極板2aが配置されている1以上の電極基体2bで構成されている。堆積膜形成装置S1においては、第2電極2は1つの電極基体2bの上に4つの電極板2aが配置されている。また、堆積膜が形成される基材10が第1電極7と第2電極2との間に配置されている。なお、基材10は、第1電極7と第2電極2との間に位置させるようにすればよく、必ずしも第1電極7で保持しなくともよい。
1) SiH4+SiH2→Si2H6
2) Si2H6+SiH2→Si3H8
・・・ 以下、同様なSiH2挿入反応が続く・・・
といったSiH2挿入反応によって高分子重合体が生成していく反応である。
本実施形態の堆積膜の形成方法について説明する。堆積膜を形成するには、第1電極7に基材10を保持させる工程と、第2電極2に高周波電力を印加する工程と、第1原料ガスを加熱触媒体12により活性化した状態で第1供給部6aから、また、第2原料ガスを第2供給部6bから基材10に向かって供給し、第2原料ガスを第1電極7と第2電極2間に生じる空間8において活性化する工程と、を有する。これら工程によって、活性化された第1原料ガスと第2原料ガスとは、空間8で混ざり、原料ガス中の成分が基材10上に堆積することで、堆積膜が基材10上に形成される。
次に、上述した薄膜形成の前に行うクリーニング方法を含めた薄膜形成方法の例について、堆積膜形成装置S1を例にとり説明する。
ここで、Pはチャンバー内圧力(Pa)、Vはチャンバー内空間容積(m3)、Qはガス供給量(Pa・m3/sec)である。例えば、チャンバー内圧力としては、50Pa以上300Pa以下程度で行われる。
図1の堆積膜形成装置を用いてArガス(キャリアガス)を第1供給部、NF3ガス(クリーニングガス)を第2供給部からチャンバー内に供給して、薄膜形成装置のクリーニングを行った。
本発明は上述した実施形態に限定されるものではなく、本発明の範囲内で多くの修正および変更を加えることができる。例えば、第2供給部6bを支流部の端部側よりも中央側に多く設けたり、第2供給部6bの開口断面積が支流部の中央に向かうに従って大きくしてもよく、これにより均一にガスを供給することができる。
2 :第2電極
2a :電極板
2b :電極基体
3a :第1導入経路
3b :第2導入経路
4 :第1供給経路
5 :第2供給経路
51 :本流部
52 :支流部
53 :接続口(接続部)
6a :第1供給部
6b :第2供給部
7 :第1電極
8 :空間
10 :基材
12 :加熱触媒体(加熱手段)
16 :冷却機構
チャンバーと、該チャンバー内に位置している第1電極と、前記チャンバー内に前記第1電極と所定間隔を隔てて位置している第2電極とを備えた堆積膜形成装置であって、
前記第2電極は、電極基体と、該電極基体の上に配置された複数の電極板とを有しており、
該電極板は、前記第1電極と前記第2電極との間の空間に第1原料ガスを供給する第1供給部と、前記空間に第2原料ガスを供給する第2供給部と、前記第1供給部に接続されて前記第1原料ガスが導入される第1供給経路と、前記第2供給部に接続されて前記第2原料ガスが導入される第2供給経路とを有しており、
前記電極基体は、前記第1原料ガスを加熱する加熱手段と、前記第1供給経路に前記第1原料ガスを導入する第1導入経路と、前記第2供給経路に前記第2原料ガスを導入する第2導入経路とを有しており、
前記第2供給経路は、前記第2導入経路から前記第2原料ガスが導入される、前記第2供給部が配されていない本流部と、該本流部から前記第2原料ガスが導入される、前記第2供給部が配されている複数の支流部とを有しており、
互いに隣り合う前記電極板の隣接部に、前記第2導入経路と前記本流部との接続部が位置していることを特徴とする。
Claims (10)
- チャンバーと、該チャンバー内に位置している第1電極と、前記チャンバー内に前記第1電極と所定間隔を隔てて位置している第2電極とを備えた堆積膜形成装置であって、
前記第2電極は、電極基体と、該電極基体の上に配置された複数の電極板とを有しており、
該電極板は、前記第1電極と前記第2電極との間の空間に第1原料ガスを供給する第1供給部と、前記空間に第2原料ガスを供給する第2供給部と、前記第1供給部に接続されて前記第1原料ガスが導入される第1供給経路と、前記第2供給部に接続されて前記第2原料ガスが導入される第2供給経路とを有しており、
前記電極基体は、前記第1原料ガスを加熱する加熱手段と、前記第1供給経路に前記第1原料ガスを導入する第1導入経路と、前記第2供給経路に前記第2原料ガスを導入する第2導入経路とを有しており、
前記第2供給経路は、前記第2導入経路から前記第2原料ガスが導入される、前記第2供給部を有さない本流部と、該本流部から前記第2原料ガスが導入される、前記第2供給部を有する複数の支流部とを有しており、
互いに隣り合う前記電極板の隣接部に、前記第2導入経路と前記本流部との接続部が位置していることを特徴とする堆積膜形成装置。 - 複数の前記電極板のそれぞれに、前記第2導入経路と前記本流部との接続部が位置していることを特徴とする請求項1に記載の堆積膜形成装置。
- 複数の前記電極板のそれぞれは、前記第1導入経路を有していることを特徴とする請求項1または請求項2に記載の堆積膜形成装置。
- 前記電極基体は、該電極基体または前記電極板を冷却する冷却機構を有していることを特徴とする請求項3に記載の堆積膜形成装置。
- 前記電極基体は、前記加熱手段を複数有していることを特徴とする請求項1乃至4のいずれかに記載の堆積膜形成装置。
- 前記加熱手段の個数は、前記電極板の個数と同じであることを特徴とする請求項1乃至5のいずれかに記載の堆積膜形成装置。
- 前記電極基体は、補強リブを有しており、該補強リブに複数の前記電極板が固定されていることを特徴とする請求項1乃至6のいずれかに記載の堆積膜形成装置。
- 前記補強リブの内部に前記第2導入経路があることを特徴とする請求項7に記載の堆積膜形成装置。
- 前記加熱手段は、電流を流す金属線を有しており、前記電極板を平面透視した際に、該電極板における前記金属線の占有面積が前記電極板の中央部で小さくなるように、前記金属線が前記電極基体に配置されていることを特徴とする請求項1乃至9のいずれかに記載の堆積膜形成装置。
- 前記第1供給部は、ホローカソード放電が生じうるように、前記第1供給部の出口側において、流路断面積が出口に向かって次第に広くなっていることを特徴とする請求項1乃至9のいずれかに記載の堆積膜形成装置。
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