JP2020077659A - 被処理体の処理方法及びプラズマ処理装置 - Google Patents
被処理体の処理方法及びプラズマ処理装置 Download PDFInfo
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- JP2020077659A JP2020077659A JP2018208028A JP2018208028A JP2020077659A JP 2020077659 A JP2020077659 A JP 2020077659A JP 2018208028 A JP2018208028 A JP 2018208028A JP 2018208028 A JP2018208028 A JP 2018208028A JP 2020077659 A JP2020077659 A JP 2020077659A
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- 238000012545 processing Methods 0.000 title claims abstract description 180
- 238000003672 processing method Methods 0.000 title claims abstract 6
- 238000000034 method Methods 0.000 claims abstract description 48
- 230000002093 peripheral effect Effects 0.000 claims abstract description 29
- 239000007789 gas Substances 0.000 claims description 103
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 73
- 229910052710 silicon Inorganic materials 0.000 claims description 73
- 239000010703 silicon Substances 0.000 claims description 73
- 238000005530 etching Methods 0.000 claims description 12
- 230000000903 blocking effect Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 7
- 239000001257 hydrogen Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 3
- 238000009832 plasma treatment Methods 0.000 claims 5
- 229920002120 photoresistant polymer Polymers 0.000 description 42
- 239000000758 substrate Substances 0.000 description 24
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 9
- 238000000151 deposition Methods 0.000 description 9
- 230000008021 deposition Effects 0.000 description 9
- 238000009826 distribution Methods 0.000 description 9
- 229910052786 argon Inorganic materials 0.000 description 8
- -1 for example Substances 0.000 description 8
- 150000002500 ions Chemical class 0.000 description 8
- 238000009792 diffusion process Methods 0.000 description 6
- 150000003377 silicon compounds Chemical class 0.000 description 6
- 239000002826 coolant Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 4
- 238000002149 energy-dispersive X-ray emission spectroscopy Methods 0.000 description 4
- 239000012212 insulator Substances 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 229910052799 carbon Inorganic materials 0.000 description 3
- 229910052814 silicon oxide Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000006870 function Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000004544 sputter deposition Methods 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000001307 helium Substances 0.000 description 1
- 229910052734 helium Inorganic materials 0.000 description 1
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
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- H01L21/027—Making masks on semiconductor bodies for further photolithographic processing not provided for in group H01L21/18 or H01L21/34
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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
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
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Abstract
Description
図1は、一実施形態に係る基板処理装置1の一例を示す図である。一実施形態に係る基板処理装置1は、容量結合型の平行平板処理装置であり、例えば表面が陽極酸化処理されたアルミニウムからなる円筒状の処理容器10を有している。処理容器10は接地されている。
処理ガス:H2ガス+Arガス
処理ガス流量:H2/Ar=100sccm/800sccm
HF電力:40MHz 300W
上部電極直流電圧:−900V
エッジリング直流電圧:0V
処理時間:60sec
処理ガス:H2ガス+Arガス
処理ガス流量:H2/Ar=100sccm/800sccm
HF電力:40MHz 300W
上部電極直流電圧:0V
エッジリング直流電圧:−515V
処理時間:60sec
処理ガス:H2ガス+Arガス
処理ガス流量:H2/Ar=100sccm/800sccm
HF電力:40MHz 300W
上部電極直流電圧:−900V
エッジリング直流電圧:−515V
処理時間:60sec
10 処理容器
16 載置台
24 エッジリング(外周部材)
34 上部電極
50 可変直流電源(第2電圧印加装置)
51 交流電源(第2電圧印加装置)
52、57 整合器
53、58 ブロッキングコンデンサ
55 可変直流電源(第1電圧印加装置)
56 交流電源(第1電圧印加装置)
66 処理ガス供給源(ガス供給部)
101 アルゴンイオン
102 シリコン
301 シリコン基板
302 酸化シリコン層
303 スピンオンカーボン層
304 反射防止層(被エッチング膜)
305 フォトレジスト層(マスク)
306 シリコン層
W ウェハ(被処理体)
Claims (17)
- 処理容器と、前記処理容器内において被処理体を載置する載置台と、前記載置台の周囲に配置される外周部材と、前記外周部材に電圧を印加する第1電圧印加装置と、を備えるプラズマ処理装置を用いて、被処理体を処理する処理方法であって、
被エッチング膜と、前記被エッチング膜上に形成されたパターン化されたマスクと、を有する前記被処理体を準備する工程と、
前記マスクを処理する工程と、を含み、
前記マスクを処理する工程は、
第1の希ガスを含む第1の処理ガスを前記処理容器に供給する工程と、
前記外周部材に直流電圧を印加しながら、前記被処理体の外周部に位置する前記マスクを前記第1の処理ガスのプラズマにより処理する第1のプラズマ処理工程と、を含む、
被処理体の処理方法。 - 前記第1の処理ガスのプラズマによる処理は、前記第1の希ガスによりスパッタされた前記外周部材に含まれるシリコンを堆積させる、
請求項1に記載の被処理体の処理方法。 - 前記プラズマ処理装置は、前記載置台に対向する上部電極と、前記上部電極に電圧を印加する第2電圧印加装置と、をさらに備え、
前記マスクを処理する工程は、
第2の希ガスを含む第2の処理ガスを前記処理容器に供給する工程と、
前記上部電極に直流電圧を印加しながら、前記被処理体の中心部および外周部に位置する前記マスクを前記第2の処理ガスのプラズマにより処理する第2のプラズマ処理工程と、をさらに含む
請求項1または請求項2に記載の被処理体の処理方法。 - 前記第2の処理ガスのプラズマによる処理は、前記第2の希ガスによりスパッタされた前記上部電極に含まれるシリコンを堆積させる、
請求項3に記載の被処理体の処理方法。 - 前記マスクを処理する工程において、
前記第1の処理ガスと前記第2の処理ガスとは同じであり、
前記第1のプラズマ処理工程と、前記第2のプラズマ処理工程は、同時に実行される、
請求項3または請求項4に記載の被処理体の処理方法。 - 前記マスクを処理する工程において、
前記第2のプラズマ処理工程が実行され、
前記第2のプラズマ処理工程が実行された後に、前記第1のプラズマ処理工程が実行される、
請求項3または請求項4に記載の被処理体の処理方法。 - 前記第1の処理ガスと前記第2の処理ガスとは同じである、
請求項6に記載の被処理体の処理方法。 - 前記第1の処理ガスと前記第2の処理ガスとは異なる、
請求項6に記載の被処理体の処理方法。 - 前記第2のプラズマ処理工程と前記第1のプラズマ処理工程とは、1回以上の予め定められた回数を繰り返す
請求項6乃至請求項8のいずれか1項に記載の被処理体の処理方法。 - 前記マスクを処理する工程の後、前記被エッチング膜をエッチングするエッチング工程をさらに含み、
前記エッチング工程は、
第3の処理ガスを前記処理容器に供給する工程と、
前記第3の処理ガスのプラズマにより処理する工程と、を含む、
請求項1乃至請求項9のいずれか1項に記載の被処理体の処理方法。 - 前記マスクを処理する工程と前記エッチング工程は、1回以上の予め定められた回数を繰り返す、
請求項10に記載の被処理体の処理方法。 - 前記マスクは、有機膜である、
請求項1乃至請求項11のいずれか1項に記載の被処理体の処理方法。 - 前記マスクは、有機膜であり、
前記第1の処理ガス及び前記第2の処理ガスは、水素を含むガスと希ガスとを含む混合ガスである、
請求項3乃至請求項9のいずれか1項に記載の被処理体の処理方法。 - 前記水素を含むガスは、H2、CH4、CH3F、HBrのうち少なくともいずれか一つを含む、
請求項13に記載の被処理体の処理方法。 - 前記第1電圧印加装置は、前記外周部材に接続される第1の直流電源、または、ブロッキング用のコンデンサを介して前記外周部材に接続される第1の交流電源のいずれか一方である、
請求項1乃至請求項14のいずれか1項に記載の被処理体の処理方法。 - 前記第2電圧印加装置は、前記外周部材に接続される第2の直流電源、または、ブロッキング用のコンデンサを介して前記外周部材に接続される第2の交流電源のいずれか一方である、
請求項3乃至請求項9のいずれか1項に記載の被処理体の処理方法。 - 被処理体に対してプラズマ処理を行う処理容器と、
前記処理容器内において前記被処理体を載置する載置台と、
前記載置台の周囲に配置される外周部材と、
前記外周部材に電圧を印加する第1電圧印加装置と、
制御部と、を備え、
前記制御部は、
被エッチング膜と、前記被エッチング膜上に形成されたパターン化されたマスクと、を有する前記被処理体を準備する工程と、
希ガスを含む処理ガスを前記処理容器に供給する工程と、
前記外周部材に直流電圧を印加しながら、前記被処理体の外周部に位置する前記マスクを前記処理ガスのプラズマにより処理する工程と、を制御するプラズマ処理装置。
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