JP2018074040A - 成膜装置および成膜方法 - Google Patents
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Abstract
Description
成膜処理される基板を配置可能な反応室と、
反応室上部に設けられ、導入されたガスを基板に対向するように設けられるガス供給孔を有し、ガス供給孔を介して反応室内に供給するガス供給部と、
ガス供給部内に原料ガスを導入する原料ガス導入ラインと、
ガス供給部内に置換ガスを導入する置換ガス導入ラインと、
ガス供給部からガス供給部内に残留する原料ガスとともに置換ガスを排出する排出ラインと、
置換ガスの導入量、およびガス供給部内に残留する原料ガスと置換ガスの排出量の、一方を他方に応じた量に制御する制御部と、を備えるものである。
置換ガス導入ラインは、
原料ガス導入ラインに連通し、置換ガスが導入されるバイパスラインを備え、置換ガスはバイパスラインから原料ガス導入ラインを経て反応室に導入されてもよい。
反応室内に基板を配置し、
基板に対向しガス供給孔が設けられたガス供給部内に、ガス供給部に連通する原料ガス導入ラインを通して第1膜の成分を含有する第1原料ガスを導入し、ガス供給孔を通してガス供給部から反応室内に第1原料ガスを供給することで基板上に第1膜を形成し、
第1原料ガスの導入を停止し、
ガス供給部内に置換ガスを導入し、ガス供給部に連通する排出ラインを通してガス供給部からガス供給部内に残留する第1原料ガスとともに置換ガスを排出し、置換ガスの導入量と、およびガス供給部内に残留する第1原料ガスと置換ガスの排出量の一方を他方に応じた量に制御する。
図1は、本実施形態の成膜装置の一例である気相成長装置1の断面図である。図1の気相成長装置1は、MOCVD法を用いることで、基板の一例であるウェハW上に組成が急峻な超格子の一例として第1膜と第2膜とが交互に積層された積層膜を成膜する枚葉型のエピタキシャル成長装置である。以下の説明では、第1膜および第2膜の双方がIII−V族半導体層である例について説明する。
次に、以上のように構成された気相成長装置1を用いた第1の実施形態の成膜方法すなわち気相成長方法について説明する。なお、以下に説明する成膜方法では、MOCVD法により、III−V族半導体層の積層膜を成膜する。図2は、第1の実施形態の成膜方法において、原料ガス供給時のガスの流れを説明するための説明図である。
次に、置換ガスGVENTを補償ガスで代替する第2の実施形態について説明する。なお、第2の実施形態において、第1の実施形態に対応する構成部については、同一の符号を用いて重複した説明を省略する。
Claims (5)
- 成膜処理される基板を配置可能な反応室と、
前記反応室上部に設けられ、導入されたガスを前記基板に対向するように設けられるガス供給孔を有し、前記ガス供給孔を介して前記反応室内に供給するガス供給部と、
前記ガス供給部内に原料ガスを導入する原料ガス導入ラインと、
前記ガス供給部内に置換ガスを導入する置換ガス導入ラインと、
前記ガス供給部から前記ガス供給部内に残留する前記原料ガスとともに前記置換ガスを排出する排出ラインと、
前記置換ガスの導入量、および前記ガス供給部内に残留する前記原料ガスと前記置換ガスの排出量の、一方を他方に応じた量に制御する制御部と、を備えることを特徴とする成膜装置。 - 前記置換ガス導入ラインは、前記原料ガス導入ラインと独立したラインであることを特徴とする請求項1に記載の成膜装置。
- 前記置換ガス導入ラインは、
前記原料ガス導入ラインに連通し、置換ガスが導入されるバイパスラインを備え、前記置換ガスは前記バイパスラインから前記原料ガス導入ラインを経て前記反応室に導入されることを特徴とする請求項1に記載の成膜装置。 - 反応室内に基板を配置し、
前記基板に対向しガス供給孔が設けられたガス供給部内に、前記ガス供給部に連通する原料ガス導入ラインを通して第1膜の成分を含有する第1原料ガスを導入し、前記ガス供給孔を通して前記ガス供給部から前記反応室内に前記第1原料ガスを供給することで前記基板上に前記第1膜を形成し、
前記第1原料ガスの導入を停止し、
前記ガス供給部内に置換ガスを導入し、前記ガス供給部に連通する排出ラインを通して前記ガス供給部から前記ガス供給部内に残留する前記第1原料ガスとともに前記置換ガスを排出し、前記置換ガスの導入量と、前記ガス供給部内に残留する第1原料ガスと前記置換ガスの排出量の一方を他方に応じた量に制御することを特徴とする成膜方法。 - 前記ガス供給部内に残留する第1原料ガスとともに前記置換ガスを排出した後、前記第1導入ラインを通して前記ガス供給部内に第2膜の成分を含有する第2原料ガスを導入し、前記ガス供給孔を通して前記ガス供給部から前記反応室内に前記第2原料ガスを供給することで前記第1膜上に前記第2膜を形成することを特徴とする請求項4に記載の成膜方法。
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| JP2016213499A JP6866111B2 (ja) | 2016-10-31 | 2016-10-31 | 成膜装置および成膜方法 |
| US15/797,008 US10501849B2 (en) | 2016-10-31 | 2017-10-30 | Film forming apparatus and film forming method |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009130108A (ja) * | 2007-11-22 | 2009-06-11 | Hitachi Kokusai Electric Inc | 基板処理装置及び半導体装置の製造方法 |
| JP2014194081A (ja) * | 2008-06-25 | 2014-10-09 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法、基板処理方法、基板処理装置および半導体装置 |
| JP2015124422A (ja) * | 2013-12-27 | 2015-07-06 | 株式会社日立国際電気 | 半導体装置の製造方法、プログラム、及び基板処理装置 |
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| JP2014194081A (ja) * | 2008-06-25 | 2014-10-09 | Hitachi Kokusai Electric Inc | 半導体装置の製造方法、基板処理方法、基板処理装置および半導体装置 |
| JP2015124422A (ja) * | 2013-12-27 | 2015-07-06 | 株式会社日立国際電気 | 半導体装置の製造方法、プログラム、及び基板処理装置 |
| JP2016009742A (ja) * | 2014-06-24 | 2016-01-18 | 株式会社日立国際電気 | 基板処理装置、半導体装置の製造方法及びプログラム |
| JP2016081945A (ja) * | 2014-10-09 | 2016-05-16 | 株式会社ニューフレアテクノロジー | 気相成長装置および気相成長方法 |
| JP5940199B1 (ja) * | 2015-06-26 | 2016-06-29 | 株式会社日立国際電気 | 半導体装置の製造方法、基板処理装置およびプログラム |
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