JP2021118351A - 基板処理装置、基板処理方法及び薬液 - Google Patents
基板処理装置、基板処理方法及び薬液 Download PDFInfo
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- H—ELECTRICITY
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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 at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having at least one potential-jump barrier or surface barrier, e.g. PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic System 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
- H01L21/31—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26 to form insulating layers thereon, e.g. for masking or by using photolithographic techniques; After treatment of these layers; Selection of materials for these layers
- H01L21/3205—Deposition of non-insulating-, e.g. conductive- or resistive-, layers on insulating layers; After-treatment of these layers
- H01L21/321—After treatment
- H01L21/3213—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer
- H01L21/32133—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only
- H01L21/32134—Physical or chemical etching of the layers, e.g. to produce a patterned layer from a pre-deposited extensive layer by chemical means only by liquid etching only
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- C09K13/00—Etching, surface-brightening or pickling compositions
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- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23F—NON-MECHANICAL REMOVAL OF METALLIC MATERIAL FROM SURFACE; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL; MULTI-STEP PROCESSES FOR SURFACE TREATMENT OF METALLIC MATERIAL INVOLVING AT LEAST ONE PROCESS PROVIDED FOR IN CLASS C23 AND AT LEAST ONE PROCESS COVERED BY SUBCLASS C21D OR C22F OR CLASS C25
- C23F1/00—Etching metallic material by chemical means
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02041—Cleaning
- H01L21/02057—Cleaning during device manufacture
- H01L21/02068—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers
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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
- H01L21/67—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere
- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
- H01L21/67028—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like
- H01L21/6704—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing
- H01L21/67051—Apparatus for fluid treatment for cleaning followed by drying, rinsing, stripping, blasting or the like for wet cleaning or washing using mainly spraying means, e.g. nozzles
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- H01L21/67005—Apparatus not specifically provided for elsewhere
- H01L21/67011—Apparatus for manufacture or treatment
- H01L21/67017—Apparatus for fluid treatment
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- H01L21/683—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping
- H01L21/687—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches
- H01L21/68714—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support
- H01L21/68764—Apparatus specially adapted for handling semiconductor or electric solid state devices during manufacture or treatment thereof; Apparatus specially adapted for handling wafers during manufacture or treatment of semiconductor or electric solid state devices or components ; Apparatus not specifically provided for elsewhere for supporting or gripping using mechanical means, e.g. chucks, clamps or pinches the wafers being placed on a susceptor, stage or support characterised by a movable susceptor, stage or support, others than those only rotating on their own vertical axis, e.g. susceptors on a rotating caroussel
Abstract
Description
まず、実施形態に係る基板処理方法の概要について図1を参照して説明する。図1は、実施形態に係る基板処理方法の概要の説明図である。
次に、上述した基板処理方法を実行する基板処理システムの構成について図3を参照して説明する。図3は、実施形態に係る基板処理システムの概略構成を示す図である。以下では、位置関係を明確にするために、互いに直交するX軸、Y軸およびZ軸を規定し、Z軸正方向を鉛直上向き方向とする。
次いで、エッチングユニット16の構成について図4を参照して説明する。図4は、エッチングユニット16の概略構成を示す図である。
次に、基板処理システム1の具体的動作について図5を参照して説明する。図5は、基板処理システム1が実行する基板処理の手順を示すフローチャートである。基板処理システム1が備える各装置は、制御部18の制御に従って図5に示す各処理手順を実行する。
18:制御部
30:基板保持機構
41:第1供給部
42:第2供給部
43:第3供給部
44:第4供給部
110:金属膜
111:金属原子
120:層間絶縁膜
130:不動態膜
131:酸化物
210:第1処理液
211:キレート剤
212:溶媒
213:錯体
220:第2処理液
230:第3処理液
Claims (20)
- 表面に金属の膜が形成された基板を保持して回転させる基板回転部と、
キレート剤及び溶媒を含む第1処理液を前記基板に向けて供給する第1供給部と、
水を含む第2処理液を前記基板に向けて供給する第2供給部と、
前記基板回転部、前記第1供給部及び前記第2供給部を制御する制御部と、
を有し、
前記制御部は、前記基板回転部により前記基板を回転させながら、
前記第1供給部により前記第1処理液を前記基板に向けて供給して前記金属及び前記キレート剤を含む錯体を生成し、
前記錯体の生成後に前記第2供給部により前記第2処理液を前記基板に向けて供給して前記錯体を前記第2処理液に溶解させる、基板処理装置。 - 前記第2処理液は、水又は水溶液である、請求項1に記載の基板処理装置。
- 前記制御部は、前記基板の表面の全体に前記第2処理液の液膜が形成されると、前記第2供給部による前記第2処理液の供給を停止する、請求項1又は2に記載の基板処理装置。
- 前記制御部は、前記基板回転部により前記基板を回転させながら、前記第1供給部による前記第1処理液の供給と、前記第2供給部による前記第2処理液の供給とを繰り返す、請求項1乃至3のいずれか1項に記載の基板処理装置。
- 水溶性の第3処理液を前記基板に向けて供給する第3供給部を有し、
前記制御部は、前記錯体の生成後、かつ前記第2処理液の供給前に、前記第3供給部により前記第3処理液を前記基板に向けて供給して前記基板上に残留する前記キレート剤を除去する、請求項1乃至4のいずれか1項に記載の基板処理装置。 - 前記制御部は、前記第2処理液の温度を25℃以下に制御する、請求項1乃至5のいずれか1項に記載の基板処理装置。
- 前記金属の膜の表面に付着した異物を除去可能な第4処理液を前記基板に向けて供給する第4供給部を有し、
前記制御部は、前記第1処理液の供給前に、前記基板回転部により前記基板を回転させながら、前記第4供給部により前記第4処理液を前記基板に向けて供給する、請求項1乃至6のいずれか1項に記載の基板処理装置。 - 前記制御部は、前記第2処理液の供給後に、前記基板の回転を継続して前記基板の表面を乾燥させる、請求項1乃至7のいずれか1項に記載の基板処理装置。
- 前記制御部は、
前記基板回転部により前記基板を回転させながら、前記第1供給部による前記第1処理液の供給と、前記第2供給部による前記第2処理液の供給とを、第1回数、繰り返し、
前記第1回数の繰り返しの後に、前記基板の回転を継続して前記基板の表面の第1乾燥を行い、
前記第1回数の繰り返しと前記第1乾燥とを、第2回数、繰り返す、請求項1乃至7のいずれか1項に記載の基板処理装置。 - 前記制御部は、
前記第1回数の繰り返しと前記第1乾燥との繰り返し数が多くなるほど、前記第1回数を減らす、請求項9に記載の基板処理装置。 - 表面に金属の膜が形成された基板を回転させながら、キレート剤及び溶媒を含む第1処理液を前記基板に向けて供給して、前記金属及び前記キレート剤を含む錯体を生成する工程と、
前記錯体を生成する工程の後に、前記基板を回転させながら、水を含む第2処理液を前記基板に向けて供給して、前記錯体を前記第2処理液に溶解させる工程と、
を有する、基板処理方法。 - 前記第2処理液は、水又は水溶液である、請求項11に記載の基板処理方法。
- 前記第2処理液を供給する工程は、
前記基板の表面の全体に前記第2処理液の液膜が形成されると、前記第2処理液の供給を停止する工程を有する、請求項11又は12に記載の基板処理方法。 - 前記第1処理液を供給する工程と、前記第2処理液を供給する工程とを繰り返す、請求項11乃至13のいずれか1項に記載の基板処理方法。
- 前記錯体を生成する工程の後、かつ前記第2処理液を供給する工程の前に、水溶性の第3処理液を前記基板に向けて供給して前記基板上に残留する前記キレート剤を除去する工程を有する、請求項11乃至14のいずれか1項に記載の基板処理方法。
- 前記第2処理液の温度が25℃以下に制御される、請求項11乃至15のいずれか1項に記載の基板処理方法。
- 前記第1処理液を供給する工程の前に、前記基板を回転させながら、前記金属の膜の表面に付着した異物を除去可能な第4処理液を前記基板に向けて供給する工程を有する、請求項11乃至16のいずれか1項に記載の基板処理方法。
- 前記第2処理液を供給する工程の後に、前記基板の回転を継続して前記基板の表面を乾燥させる工程を有する、請求項11乃至17のいずれか1項に記載の基板処理方法。
- 表面に金属の膜が形成された基板を処理する薬液であって、キレート剤、溶媒及び水を含み、水の割合が10質量%以下である、薬液。
- 前記金属は、Cu、Co、Ru、Mo及びTiNからなる群から選択される1種以上を含み、
前記キレート剤は、カルボニル基、カルボキシル基及びアミン基からなる群から選択される1種以上を含む有機酸を含み、
前記溶媒は、イソプロピルアルコール、アセトン、N−メチル−2−ピロリドン及びテトラヒドロフランからなる群から選択される1種以上を含む、請求項19に記載の薬液。
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