JP6468955B2 - シリコン含有膜の成膜方法及び成膜装置 - Google Patents
シリコン含有膜の成膜方法及び成膜装置 Download PDFInfo
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- JP6468955B2 JP6468955B2 JP2015126036A JP2015126036A JP6468955B2 JP 6468955 B2 JP6468955 B2 JP 6468955B2 JP 2015126036 A JP2015126036 A JP 2015126036A JP 2015126036 A JP2015126036 A JP 2015126036A JP 6468955 B2 JP6468955 B2 JP 6468955B2
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Description
前記基板にシリコン含有ガスを供給し、前記窪み内に前記シリコン含有ガスを吸着させる第1のシリコン吸着工程と、
前記基板にエッチングガスを供給し、前記窪み内に吸着した前記シリコン含有ガスのシリコン成分の一部をエッチングするシリコンエッチング工程と、
前記基板に反応ガスを供給し、エッチング後に前記窪み内に吸着したまま残留した前記シリコン成分を酸化し、前記窪み内にシリコン含有膜を堆積させる第1のシリコン含有膜堆積工程と、からなる第1の成膜サイクルを含む。
該処理室内に設けられ、表面上に基板を載置可能な回転テーブルと、
該回転テーブルより上方に、該回転テーブルの回転方向に沿って上流側から順に互いに離間して設けられた原料ガス供給部と、エッチングガス供給部と、反応ガス供給部と、
前記原料ガス供給部で原料ガス、前記エッチングガス供給部でエッチングガス、前記反応ガス供給部で反応ガスを各々供給した状態で前記回転テーブルを回転させ、前記基板に前記原料ガス供給部、前記エッチングガス供給部、前記反応ガス供給部の下方を順に通過させる第1の成膜サイクルと、
前記原料ガス供給部で原料ガス、前記反応ガス供給部で反応ガスを各々供給した状態で前記回転テーブルを回転させ、前記基板に前記原料ガス供給部、前記反応ガス供給部の下方を交互に通過させる第2の成膜サイクルと、を切り替え可能な制御手段と、を有する。
はじめに、本発明の実施形態に係る成膜装置について図面を用いて説明する。
次に、本発明の実施形態に係るシリコン含有膜の成膜方法について説明する。本実施形態に係るシリコン含有膜の成膜方法は、上述の実施形態に係る成膜装置以外の成膜装置でも実施可能であるが、説明の便宜のため、上述の実施形態に係る成膜装置で実施する例について説明する。
次に、本発明の実施形態に係るシリコン含有膜の成膜方法及び成膜装置を実施した実施例について説明する。
2 回転テーブル
31 原料ガスノズル
32 反応ガスノズル
33 エッチングガスノズル
41、42 分離ガスノズル
80 窪み
90 シリコン酸化膜
100 制御部
W 基板(半導体ウェーハ)
P1 第1の処理領域
P2 第2の処理領域
P21 酸化ガス供給領域
P22 エッチングガス供給領域
D 分離領域
Claims (19)
- 基板の表面に形成された窪みにシリコン含有膜を充填するシリコン含有膜の成膜方法であって、
前記基板にシリコン含有ガスを供給し、前記窪み内に前記シリコン含有ガスを吸着させる第1のシリコン吸着工程と、
前記基板にエッチングガスを供給し、前記窪み内に吸着した前記シリコン含有ガスのシリコン成分の一部をエッチングするシリコンエッチング工程と、
前記基板に前記シリコン成分と反応する反応ガスを供給し、エッチング後に前記窪み内に吸着したまま残留した前記シリコン成分と反応させて反応生成物を生成し、前記窪み内にシリコン含有膜を堆積させる第1のシリコン含有膜堆積工程と、からなる第1の成膜サイクルを含むシリコン含有膜の成膜方法。 - 前記基板にシリコン含有ガスを供給し、前記窪み内に前記シリコン含有ガスを吸着させる第2のシリコン吸着工程と、
前記基板に前記シリコン含有ガスと反応する反応ガスを供給し、前記窪み内に吸着した前記シリコン含有ガスと反応させて反応生成物を生成し、前記窪み内にシリコン含有膜を堆積させる第2のシリコン含有膜堆積工程と、からなる第2の成膜サイクルを更に含む請求項1に記載のシリコン含有膜の成膜方法。 - 前記第1の成膜サイクルを連続的に繰り返す連続シーケンスを含む請求項2に記載のシリコン含有膜の成膜方法。
- 前記第2の成膜サイクルを所定回数繰り返して前記窪み内に所定膜厚の前記シリコン含有膜を堆積した後、前記窪み内を前記シリコン含有膜で充填するまで前記連続シーケンスを行う請求項3に記載のシリコン含有膜の成膜方法。
- 前記第2の成膜サイクルを所定回数繰り返す度に前記第1の成膜サイクルを1回行う周期的シーケンスを含む請求項2に記載のシリコン含有膜の成膜方法。
- 前記第2の成膜サイクルを所定回数繰り返して前記窪み内に所定膜厚の前記シリコン含有膜を堆積した後、前記窪み内を前記シリコン含有膜で充填するまで前記周期的シーケンスを繰り返す請求項5に記載のシリコン含有膜の成膜方法。
- 前記第1の成膜サイクルにおける前記第1のシリコン吸着工程と前記シリコンエッチング工程との間には、前記基板にパージガスを供給する第1のパージガス供給工程が設けられる請求項2乃至6のいずれか一項に記載のシリコン含有膜の成膜方法。
- 前記第1の成膜サイクルにおける前記シリコンエッチング工程と前記第1のシリコン含有膜堆積工程の間には、前記基板にパージガスを供給する第2のパージガス供給工程が更に設けられる請求項7に記載のシリコン含有膜の成膜方法。
- 前記第2の成膜サイクルにおける前記第2のシリコン吸着工程と前記第2のシリコン含有膜堆積工程との間には、前記基板にパージガスを供給する第3のパージガス供給工程が設けられる請求項8に記載のシリコン含有膜の成膜方法。
- 前記基板を処理室内の回転テーブル上に周方向に沿って載置する工程を更に有し、
前記回転テーブルより上方に、前記周方向に沿ってシリコン含有ガス供給部、エッチングガス供給部、反応ガス供給部が配置され、
前記第1の成膜サイクルは、前記シリコン含有ガス供給部で前記シリコン含有ガスを供給し、前記エッチングガス供給部で前記エッチングガスを供給し、前記反応ガス供給部で前記反応ガスを供給した状態で前記回転テーブルを回転させ、前記基板に前記シリコン含有ガス供給部、前記エッチングガス供給部、前記反応ガス供給部の下方を順に通過させることにより行われ、
前記第2の成膜サイクルは、前記シリコン含有ガス供給部で前記シリコン含有ガスを供給し、前記反応ガス供給部で前記反応ガスを供給した状態で前記回転テーブルを回転させ、前記基板に前記シリコン含有ガス供給部、前記反応ガス供給部の下方を順に通過させることにより行われる請求項9に記載のシリコン含有膜の成膜方法。 - 前記シリコン含有ガス供給部と前記エッチングガス供給部との間と、前記反応ガス供給部と前記シリコン含有ガス供給部との間には、パージガス供給領域が各々設けられ、
前記第1乃至第3のパージガス供給工程は、前記パージガス供給領域から前記パージガスを供給した状態で前記回転テーブルを回転させ、前記基板に前記パージガス供給領域を通過させることにより行われる請求項10に記載のシリコン含有膜の成膜方法。 - 前記エッチングガスは、塩素ガスである請求項1乃至11のいずれか一項に記載のシリコン含有膜の成膜方法。
- 前記シリコン含有ガスは、有機アミノシランガスである請求項1乃至12のいずれか一項に記載のシリコン含有膜の成膜方法。
- 前記反応ガスは、酸化ガス又は窒化ガスである請求項1乃至13のいずれか一項に記載のシリコン含有膜の成膜方法。
- 前記基板はシリコンウェーハであり、前記窪みは前記基板の表面に形成されたトレンチ又はビアである請求項1乃至14のいずれか一項に記載のシリコン含有膜の成膜方法。
- 処理室と、
該処理室内に設けられ、表面上に基板を載置可能な回転テーブルと、
該回転テーブルより上方に、該回転テーブルの回転方向に沿って上流側から順に互いに離間して設けられた原料ガス供給部と、エッチングガス供給部と、反応ガス供給部と、
前記原料ガス供給部で原料ガス、前記エッチングガス供給部でエッチングガス、前記反応ガス供給部で前記原料ガスと反応して反応生成物を生成する反応ガスを各々供給した状態で前記回転テーブルを回転させ、前記基板に前記原料ガス供給部、前記エッチングガス供給部、前記反応ガス供給部の下方を順に通過させる第1の成膜サイクルと、
前記原料ガス供給部で原料ガス、前記反応ガス供給部で反応ガスを各々供給した状態で前記回転テーブルを回転させ、前記基板に前記原料ガス供給部、前記反応ガス供給部の下方を交互に通過させる第2の成膜サイクルと、を切り替え可能な制御手段と、を有する成膜装置。 - 前記原料ガス供給部と前記エッチングガス供給部との間、及び前記反応ガス供給部と前記原料ガス供給部との間に、パージガスを供給するパージガス供給領域が各々設けられている請求項16に記載の成膜装置。
- 前記制御手段は、前記第2の成膜サイクルを所定回数繰り返した後、前記第1の成膜サイクルを連続的に繰り返す制御を行う請求項16又は17に記載の成膜装置。
- 前記制御手段は、前記第2の成膜サイクルを第1の所定回数繰り返した後、前記第2の成膜サイクルを第2の所定回数繰り返す度に前記第1の成膜サイクルを1回行うシーケンスを繰り返す制御を行う請求項16又は17に記載の成膜装置。
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