JP6598630B2 - 熱処理方法 - Google Patents
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- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical group [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 24
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- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
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- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
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- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
- H01L21/225—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities using diffusion into or out of a solid from or into a solid phase, e.g. a doped oxide layer
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/22—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities
- H01L21/225—Diffusion of impurity materials, e.g. doping materials, electrode materials, into or out of a semiconductor body, or between semiconductor regions; Interactions between two or more impurities; Redistribution of impurities using diffusion into or out of a solid from or into a solid phase, e.g. a doped oxide layer
- H01L21/2251—Diffusion into or out of group IV semiconductors
- H01L21/2252—Diffusion into or out of group IV semiconductors using predeposition of impurities into the semiconductor surface, e.g. from a gaseous phase
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- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/26—Bombardment with radiation
- H01L21/263—Bombardment with radiation with high-energy radiation
- H01L21/268—Bombardment with radiation with high-energy radiation using electromagnetic radiation, e.g. laser radiation
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Description
図1は、本発明に係る熱処理装置1の構成を示す縦断面図である。本実施形態の熱処理装置1は、基板として円板形状の半導体ウェハーWに対してフラッシュ光照射を行うことによってその半導体ウェハーWを加熱するフラッシュランプアニール装置である。処理対象となる半導体ウェハーWのサイズは特に限定されるものではないが、例えばφ300mmやφ450mmである。熱処理装置1に搬入される前の半導体ウェハーWには不純物が導入されており、熱処理装置1による加熱処理によって導入された不純物の活性化処理および拡散量の制御が実行される。なお、図1および以降の各図においては、理解容易のため、必要に応じて各部の寸法や数を誇張または簡略化して描いている。
次に、本発明の第2実施形態について説明する。第2実施形態の熱処理装置1の構成は第1実施形態と全く同じである。また、第2実施形態の熱処理装置1における半導体ウェハーWの処理手順も第1実施形態と概ね同様である。第2実施形態が第1実施形態と相違するのは、半導体ウェハーWの表面の材質である。
次に、本発明の第3実施形態について説明する。第3実施形態の熱処理装置1の構成は第1実施形態と全く同じである。また、第3実施形態の熱処理装置1における半導体ウェハーWの処理手順も第1実施形態と概ね同様である。第3実施形態が第1実施形態と相違するのは、フラッシュ光照射による半導体ウェハーWの表面の温度変化パターンである。
次に、本発明の第4実施形態について説明する。第4実施形態の熱処理装置1の構成は第1実施形態と全く同じである。また、第4実施形態の熱処理装置1における半導体ウェハーWの処理手順も第1実施形態と概ね同様である。第4実施形態が第1実施形態と相違するのは、フラッシュ光照射による半導体ウェハーWの表面の温度変化パターンである。
以上、本発明の実施の形態について説明したが、この発明はその趣旨を逸脱しない限りにおいて上述したもの以外に種々の変更を行うことが可能である。例えば、第2実施形態では、シリコンの基材上にゲルマニウムをエピタキシャル成長させた半導体ウェハーWを用いていたが、基材自体がゲルマニウムの半導体ウェハーWであっても良い。すなわち、半導体ウェハーWの少なくとも表面の材質がゲルマニウムであれば良い。上述したように、表面がゲルマニウムの半導体ウェハーWにヒ素、リン等のN型ドーパントを不純物として導入した場合に本発明に係る技術は特に好適である。
3 制御部
4 ハロゲン加熱部
5 フラッシュ加熱部
6 チャンバー
7 保持部
10 移載機構
33 入力部
65 熱処理空間
93 コンデンサ
95 電源ユニット
96 IGBT
102 ゲート絶縁膜
103 ゲート電極
105 ソース・ドレイン領域
106 キャップ膜
108 エクステンション領域
FL フラッシュランプ
HL ハロゲンランプ
W 半導体ウェハー
Claims (8)
- 不純物が導入された基板に対して光を照射することによって該基板を加熱する熱処理方法であって、
前記基板に光を照射することによって前記基板の表面温度を不純物の拡散が生じる拡散温度に所定時間維持する拡散工程と、
前記拡散工程の後、前記基板に光を照射することによって前記基板の表面温度を不純物の活性化が生じる活性化温度にまで昇温する活性化工程と、
を備えることを特徴とする熱処理方法。 - 請求項1記載の熱処理方法において、
前記活性化温度は前記拡散温度よりも高温であることを特徴とする熱処理方法。 - 請求項1または請求項2記載の熱処理方法において、
前記拡散工程と前記活性化工程との間に、前記基板の表面温度を前記拡散温度よりも低下させる冷却工程をさらに備えることを特徴とする熱処理方法。 - 請求項1または請求項2記載の熱処理方法において、
前記拡散工程と前記活性化工程とを複数回繰り返すことを特徴とする熱処理方法。 - 請求項1から請求項4のいずれかに記載の熱処理方法において、
前記基板の表面の不純物が導入された領域にキャップ膜を成膜することを特徴とする熱処理方法。 - 請求項1から請求項5のいずれかに記載の熱処理方法において、
前記拡散工程では、前記基板の表面温度を拡散温度に1ミリ秒以上10ミリ秒以下維持することを特徴とする熱処理方法。 - 請求項1から請求項6のいずれかに記載の熱処理方法において、
前記基板の少なくとも表面の材質はゲルマニウムであり、
前記拡散温度は600℃以上750℃以下であることを特徴とする熱処理方法。 - 請求項1から請求項6のいずれかに記載の熱処理方法において、
前記基板の少なくとも表面の材質はシリコンであり、
前記拡散温度は1100℃以上1250℃以下であることを特徴とする熱処理方法。
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JP2015207661A JP6598630B2 (ja) | 2015-10-22 | 2015-10-22 | 熱処理方法 |
TW105133108A TWI668763B (zh) | 2015-10-22 | 2016-10-13 | 熱處理方法 |
US15/297,213 US10446397B2 (en) | 2015-10-22 | 2016-10-19 | Thermal processing method through light irradiation |
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JP2015207661A JP6598630B2 (ja) | 2015-10-22 | 2015-10-22 | 熱処理方法 |
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JP6847610B2 (ja) * | 2016-09-14 | 2021-03-24 | 株式会社Screenホールディングス | 熱処理装置 |
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