JP7249744B2 - 成膜装置及び成膜方法 - Google Patents
成膜装置及び成膜方法 Download PDFInfo
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Description
該処理室内に設けられ、基板を周方向に沿って載置可能な回転テーブルと、
該回転テーブル上にオゾンガスを供給可能なオゾンガス供給部と、
該オゾンガス供給部の直上を含めて覆うように設けられた板状部材と、
該板状部材の上面に設けられたオゾン活性化手段と、を有し、
前記板状部材は、
該板状部材の上面を構成する上面板と、
前記上面板を前記処理室の天井面に固定し、かつ前記上面板と前記天井面との間にスペースを形成する上部固定部と、
を有し、
前記オゾン活性化手段は、前記スペースにおいて前記上面板の上面に載置される。
まず、本開示の第1の実施形態に係る成膜装置について説明する。
(1)式に示されるように、オゾンが酸素に分解すると、286kLもの発熱反応をし、これにより、強いエネルギーが発生し、オゾンの酸化力が高まる。よって、オゾンを分解すると、強い酸化力が得られる。
次に、本開示の実施形態に係る成膜方法について、上述の成膜装置を用いて実施される場合を例にとり説明する。なお、成膜装置は、第1の実施形態に係る成膜装置を用い、反応ガスノズル32は1本のみ設けられている例を挙げて説明する。
2 回転テーブル
7 ヒータユニット
31、32 反応ガスノズル
41、42 分離ガスノズル
60 オゾナイザ
80 活性化プレート
90 ヒータ
91、91a、91b、91c 温度検出器
Claims (19)
- 処理室と、
該処理室内に設けられ、基板を周方向に沿って載置可能な回転テーブルと、
該回転テーブル上にオゾンガスを供給可能なオゾンガス供給部と、
該オゾンガス供給部の直上を含めて覆うように設けられた板状部材と、
該板状部材の上面に設けられたオゾン活性化手段と、を有し、
前記板状部材は、
該板状部材の上面を構成する上面板と、
前記上面板を前記処理室の天井面に固定し、かつ前記上面板と前記天井面との間にスペースを形成する上部固定部と、
を有し、
前記オゾン活性化手段は、前記スペースにおいて前記上面板の上面に載置される、
成膜装置。 - 前記オゾン活性化手段は、前記オゾンガスを加熱可能な第1のヒータであり、
前記回転テーブル内に設けられ、前記基板を加熱可能な第2のヒータと、
前記第1のヒータの加熱温度と前記第2のヒータの加熱温度とを独立して制御可能な制御部と、を更に有する請求項1に記載の成膜装置。 - 前記制御部は、前記第1のヒータの加熱温度が前記第2のヒータの加熱温度よりも高くなるように制御する請求項2に記載の成膜装置。
- 前記制御部は、前記第1のヒータの加熱温度を前記オゾンガスの分解温度よりも高い温度に制御する請求項3に記載の成膜装置。
- 前記板状部材は、前記処理室の天井面と前記回転テーブルとの間の空間に略水平に設けられ、前記板状部材と前記回転テーブルとの間の圧力を前記天井面と前記回転テーブルとの間の空間よりも高くするように設けられる請求項2乃至4のいずれか一項に記載の成膜装置。
- 前記第1のヒータは、前記板状部材の略全面を覆うように設けられている請求項2乃至5のいずれか一項に記載の成膜装置。
- 前記板状部材は石英からなる請求項2乃至6のいずれか一項に記載の成膜装置。
- 前記オゾンガス供給部は、前記回転テーブルの半径方向に沿って延びる形状を有しており、
前記板状部材は、前記回転テーブルの外周に沿った円弧形状を有する略扇形の形状を有する請求項2乃至7のいずれか一項に記載も成膜装置。 - 前記オゾンガス供給部は、前記板状部材における前記回転テーブルの回転方向の上流側に設けられ、
前記第1のヒータは、前記オゾンガス供給部よりも下流側に設けられる請求項2乃至8のいずれか一項に記載の成膜装置。 - 前記板状部材内に設けられた温度検出器を更に有し、
前記制御部は、前記温度検出器で検出された温度に基づいて前記第1のヒータの加熱温度を制御する請求項2乃至9のいずれか一項に記載の成膜装置。 - 前記温度検出器は、前記回転テーブルの半径方向において複数個設けられている請求項10に記載の成膜装置。
- 前記温度検出器は、熱電対である請求項10又は11に記載の成膜装置。
- 前記回転テーブルの回転方向における前記オゾンガス供給部の上流側に設けられた原料ガスを前記回転テーブルに供給可能な原料ガス供給部と、
該原料ガス供給部よりも前記回転テーブルの回転方向における下流側であって前記オゾンガス供給部よりも上流側に設けられた第1のパージガス供給部と、
前記オゾンガス供給部よりも前記回転テーブルの回転方向における下流側であって前記原料ガス供給部よりも上流側に設けられた第2のパージガス供給部と、を更に有する請求項1乃至10のいずれか一項に記載の成膜装置。 - 前記原料ガス供給部は、High-k膜の成膜に用いられる原料ガスを供給する請求項13に記載の成膜装置。
- 前記オゾンガス供給部は、1つの前記板状部材に対して複数個設けられている請求項1乃至14のいずれか一項に記載の成膜装置。
- 基板を載置した回転テーブル内に設けられた第1のヒータで前記基板を第1の加熱温度で加熱する工程と、
前記回転テーブル上にオゾンガスを供給可能なオゾンガス供給部の直上を含めて覆う板状部材の上面に設けた第2のヒータで、前記オゾンガスを第2の加熱温度で加熱する工程と、
前記基板を前記第1の加熱温度で加熱した状態で前記回転テーブルを回転させ、前記オゾンガス供給部より前記回転テーブルの回転方向における上流側に設けられた原料ガス供給部から前記基板上に原料ガスを吸着させる工程と、
前記基板を前記第1の加熱温度で加熱した状態で前記回転テーブルを回転させ、前記オゾンガス供給部から前記第2の加熱温度で加熱された前記オゾンガスを前記基板に供給し、前記基板上に吸着した前記原料ガスを酸化して酸化膜を前記基板上に堆積させる工程と、を有し、
前記回転テーブルは、処理室内に設けられ、
前記板状部材は、
該板状部材の上面を構成する上面板と、
前記上面板を前記処理室の天井面に固定し、かつ前記上面板と前記天井面との間にスペースを形成する上部固定部と、
を有し、
前記第2のヒータは、前記スペースにおいて前記上面板の上面に載置される、
成膜方法。 - 前記第2の加熱温度を前記第1の加熱温度よりも高く設定して前記オゾンガスを加熱する請求項16に記載の成膜方法。
- 前記第2の加熱温度を前記オゾンガスの分解温度よりも高く設定して前記オゾンガスを加熱分解する請求項17に記載の成膜方法。
- 前記オゾンガスの温度を検出する工程と、
検出した前記オゾンガスの温度に基づいて前記第2の加熱温度を制御する工程と、を更に有する請求項16乃至18のいずれか一項に記載の成膜方法。
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