JP6538300B2 - 感受性基材上にフィルムを蒸着するための方法 - Google Patents
感受性基材上にフィルムを蒸着するための方法 Download PDFInfo
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- JP6538300B2 JP6538300B2 JP2013231188A JP2013231188A JP6538300B2 JP 6538300 B2 JP6538300 B2 JP 6538300B2 JP 2013231188 A JP2013231188 A JP 2013231188A JP 2013231188 A JP2013231188 A JP 2013231188A JP 6538300 B2 JP6538300 B2 JP 6538300B2
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- 238000007740 vapor deposition Methods 0.000 description 1
- 239000002023 wood Substances 0.000 description 1
Images
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- H01L21/02225—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer
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- H01L21/02271—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition
- H01L21/02274—Forming insulating materials on a substrate characterised by the process for the formation of the insulating layer formation by a deposition process deposition from the gas or vapour phase deposition by decomposition or reaction of gaseous or vapour phase compounds, i.e. chemical vapour deposition in the presence of a plasma [PECVD]
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- H01L22/10—Measuring as part of the manufacturing process
- H01L22/12—Measuring as part of the manufacturing process for structural parameters, e.g. thickness, line width, refractive index, temperature, warp, bond strength, defects, optical inspection, electrical measurement of structural dimensions, metallurgic measurement of diffusions
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Description
本出願は、2012年11月8日に出願された名称「感受性基材上にフィルムを蒸着するための方法」の米国仮特許出願第61/724217号の利益を主張するものであり、上記出願は参照によりその全体を全ての目的のために本明細書に援用される。
上述の実施形態のうち1つ又は複数において、いずれの適切なプロセスステーションを用いてよいことを理解されたい。例えば、図6はCFDプロセスステーション1300のある実施形態を概略的に示す。説明を簡潔にするために、CFDプロセスステーション1300を、低圧環境を維持するためのプロセスチャンバ本体1302を有するスタンドアローンタイプのプロセスステーションとして示す。しかしながら、一般的なプロセスツール環境には、多数のCFDプロセスステーションが含まれ得ることを理解されたい。例えば、図7はマルチステーション処理ツール2400の実施形態を示す。更に、いくつかの実施形態では、既に詳細に説明したものを含むCFDプロセスステーション1400の1つ又は複数のハードウェアパラメータは、1つ又は複数のコンピュータコントローラによってプログラムを用いて調整できることを理解されたい。
Claims (17)
- 単一ステーション反応チャンバ又はマルチステーション反応チャンバにおいて、酸化感受性及び/又は窒化感受性基材の曝露表面上に、酸化シリコン二重層又は窒化シリコン二重層を形成する方法であって、
(a)前記反応チャンバにおいて、前記酸化感受性及び/又は窒化感受性基材をシリコン含有反応物の気相流に周期的に曝露すること、
(b)前記反応チャンバにおいて、前記酸化感受性及び/又は窒化感受性基材を、酸化反応物又は窒素含有反応物の気相流に曝露すること、
(c)前記シリコン含有反応物の前記気相流が停止したら、12.5〜125W/ステーションの高周波数の高周波電力を用いて前記反応チャンバ内でプラズマを周期的に着火することによって、前記二重層の第1の層を形成すること、
(d)前記反応チャンバにおいて、前記酸化感受性又は窒化感受性基材を、第2のシリコン含有反応物の第2の気相流に周期的に曝露すること、
(e)前記酸化感受性又は窒化感受性基材を、第2の酸化反応物の第2の気相流又は第2の窒素含有反応物の第2の気相流に曝露すること、
(f)前記第2のシリコン含有反応物の前記気相流が停止したら、250〜1500W/ステーションの高周波数の高周波電力を用いて前記反応チャンバ内でプラズマを周期的に着火することによって、前記第1の層の上に第2の層を形成すること、を備え、
前記プラズマは、2つの電極の間で形成され、前記酸化感受性又は窒化感受性基材は、前記2つの電極の間に位置する、方法。 - 請求項1に記載の方法であって、
前記酸化シリコン材料又は前記窒化シリコン材料の厚さは、10〜50Åである、方法。 - 請求項1に記載の方法であって、
50℃〜200℃で実施される、方法。 - 請求項1に記載の方法であって、
前記酸化反応物は、50〜100%の、CO、CO2、NO、NO2、N2O、スルホキシド、酸素含有炭化水素(CxHyOz)及び/又は水(H2O)からなる群から選択される弱酸化剤、並びに0〜50%のO2を含む、方法。 - 請求項1に記載の方法であって、
前記(d)〜(f)の操作は、300℃〜400℃で実施される、方法。 - 請求項1に記載の方法であって、
前記第1の層の厚さは、前記二重層の全厚さの1〜20%である、方法。 - 請求項1に記載の方法であって、
前記(a)〜(c)の操作から前記(d)〜(f)の操作への遷移は、前記第2の酸化反応物又は第2の窒素含有反応物の前記第2の気相流が、前記酸化反応物又は窒素含有反応物の前記気相流とは異なるように、前記酸化反応物又は窒素含有反応物の前記気相流を変化させることを含む、方法。 - 請求項7に記載の方法であって、
前記第2の酸化反応物の前記第2の気相流は、前記酸化反応物の前記気相流よりも高い比率のO 2 を含む、方法。 - 請求項1に記載の方法であって、
前記酸化反応物若しくは窒素含有反応物の前記気相流、及び/又は前記第2の酸化反応物の前記第2の気相流若しくは前記第2の窒素含有反応物の前記第2の気相流は、パルスとして前記反応チャンバへと流れる、方法。 - 請求項1に記載の方法であって、
前記酸化感受性又は窒化感受性基材の前記曝露表面は、シリコン(Si)、コバルト(Co)、ゲルマニウム−アンチモン−テルル(GST)、シリコン−ゲルマニウム(SiGe)、窒化シリコン(SiN)、及び炭化シリコン(SiC)からなる群から選択される、方法。 - 請求項1に記載の方法であって、
前記酸化感受性又は前記窒化感受性基材は、2Å以下だけ酸化される、方法。 - 基材の曝露表面上に、酸化シリコン二重層又は窒化シリコン二重層を形成する方法であって、
(a)反応チャンバにおいて、前記基材の温度を25°C〜200°Cに維持して、前記基材をシリコン含有反応物の気相流に周期的に曝露すること、前記基材は酸化感受性又は窒化感受性であること、
(b)前記基材を、酸化反応物又は窒素含有反応物の気相流に曝露すること、
(c)前記シリコン含有反応物の前記気相流が停止したら、前記反応チャンバ内でプラズマを周期的に着火することによって、前記二重層の第1の層を形成し、
(d)前記反応チャンバにおいて、前記基材を、第2のシリコン含有反応物の第2の気相流に周期的に曝露し、前記基材の温度は、前記(a)〜(c)の操作における前記基材の温度より少なくとも50℃高い温度であり、
(e)前記基材を、第2の酸化反応物又は第2の窒素含有反応物の第2の気相流に曝露すること、
(f)前記第2のシリコン含有反応物の前記気相流が停止したら、高周波数の高周波電力を用いて前記反応チャンバ内で前記プラズマを周期的に着火することによって、前記第1の層の上に第2の層を形成することを備え、
前記プラズマは2つの電極の間で形成され、前記基材は前記2つの電極の間に位置する、
方法。 - 請求項12に記載の方法であって、
前記プラズマは、12.5〜125W/基材の高周波数の高周波電力を用いて着火される、方法。 - 請求項12に記載の方法であって、
前記操作(f)における前記プラズマは、250〜1500W/基材の高周波数の高周波電力を用いて着火される、方法。 - 請求項12に記載の方法であって、
前記第1の層の厚さは、前記二重層の全厚さの1〜20%である、方法。 - 請求項12に記載の方法であって、
前記基材は、2Å以下だけ酸化される、方法。 - 請求項1に記載の方法であって、
前記第1の層の厚さは、
(i)異なる厚さのシリコン含有保護フィルムが蒸着された、複数の別個の基材を用意すること、
(ii)前記別個の基材上の前記保護フィルムそれぞれの、プラズマ処理前厚さを測定すること、
(iii)(ii)の後、前記別個の基材を複数回のプラズマ曝露サイクルに曝露することであって、前記プラズマ曝露中、実質的にいずれの材料も蒸着されない、曝露すること、
(iv)(iii)の後、前記別個の基材上の前記保護フィルムのプラズマ処理後厚さを測定すること、
(v)各前記別個の基材の厚さの違いを算出することであって、前記厚さの違いは、前記プラズマ処理前厚さから前記プラズマ処理後厚さを引いたものに対応する、算出すること、
(vi)前記厚さの違いが実質的に安定する前記保護フィルムの厚さを評価することにより、前記(a)〜(c)の操作において蒸着された前記酸化シリコン材料又は窒化シリコン材料の前記厚さを決定すること
によって、その蒸着前に決定される、方法。
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US20170316988A1 (en) | 2017-11-02 |
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