TWI322827B - Microelectronic cleaning compositions containing oxidizers and organic solvents - Google Patents

Microelectronic cleaning compositions containing oxidizers and organic solvents Download PDF

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Publication number
TWI322827B
TWI322827B TW092115125A TW92115125A TWI322827B TW I322827 B TWI322827 B TW I322827B TW 092115125 A TW092115125 A TW 092115125A TW 92115125 A TW92115125 A TW 92115125A TW I322827 B TWI322827 B TW I322827B
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TW
Taiwan
Prior art keywords
weight
cleaning composition
composition
cleaning
water
Prior art date
Application number
TW092115125A
Other languages
English (en)
Other versions
TW200407419A (en
Inventor
Sherman Hsu Chien-Pin
Original Assignee
Mallinckrodt Baker Inc
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Filing date
Publication date
Application filed by Mallinckrodt Baker Inc filed Critical Mallinckrodt Baker Inc
Publication of TW200407419A publication Critical patent/TW200407419A/zh
Application granted granted Critical
Publication of TWI322827B publication Critical patent/TWI322827B/zh

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/42—Stripping or agents therefor
    • C—CHEMISTRY; METALLURGY
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
    • C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
    • C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
    • C23G1/061—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors nitrogen-containing compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/20—Organic compounds containing oxygen
    • C11D3/2068—Ethers
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/24—Organic compounds containing halogen
    • C11D3/245—Organic compounds containing halogen containing fluorine
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/28—Heterocyclic compounds containing nitrogen in the ring
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/26—Organic compounds containing nitrogen
    • C11D3/33—Amino carboxylic acids
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/16—Organic compounds
    • C11D3/34—Organic compounds containing sulfur
    • C11D3/3454—Organic compounds containing sulfur containing sulfone groups, e.g. vinyl sulfones
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
    • C11D3/39—Organic or inorganic per-compounds
    • C11D3/3947—Liquid compositions
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/02—Inorganic compounds
    • C11D7/04—Water-soluble compounds
    • C11D7/06—Hydroxides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/26—Organic compounds containing oxygen
    • C11D7/261—Alcohols; Phenols
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/50—Solvents
    • C11D7/5004—Organic solvents
    • C—CHEMISTRY; METALLURGY
    • 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
    • C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
    • C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
    • C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
    • C23G1/16—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions using inhibitors
    • C23G1/18—Organic inhibitors
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/42—Stripping or agents therefor
    • G03F7/422—Stripping or agents therefor using liquids only
    • G03F7/423—Stripping or agents therefor using liquids only containing mineral acids or salts thereof, containing mineral oxidizing substances, e.g. peroxy compounds
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • 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
    • H01L21/02041—Cleaning
    • H01L21/02057—Cleaning during device manufacture
    • H01L21/0206—Cleaning during device manufacture during, before or after processing of insulating layers
    • H01L21/02063—Cleaning during device manufacture during, before or after processing of insulating layers the processing being the formation of vias or contact holes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • 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
    • H01L21/02041—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
    • H01L21/02071—Cleaning during device manufacture during, before or after processing of conductive layers, e.g. polysilicon or amorphous silicon layers the processing being a delineation, e.g. RIE, of conductive layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • 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
    • 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
    • H01L21/3105—After-treatment
    • H01L21/311—Etching the insulating layers by chemical or physical means
    • H01L21/31127—Etching organic layers
    • H01L21/31133—Etching organic layers by chemical means
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D2111/00—Cleaning compositions characterised by the objects to be cleaned; Cleaning compositions characterised by non-standard cleaning or washing processes
    • C11D2111/10—Objects to be cleaned
    • C11D2111/14—Hard surfaces
    • C11D2111/22—Electronic devices, e.g. PCBs or semiconductors
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/28—Organic compounds containing halogen
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3263—Amides or imides
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/32—Organic compounds containing nitrogen
    • C11D7/3281—Heterocyclic compounds
    • C—CHEMISTRY; METALLURGY
    • C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
    • C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
    • C11D7/00—Compositions of detergents based essentially on non-surface-active compounds
    • C11D7/22—Organic compounds
    • C11D7/34—Organic compounds containing sulfur
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/26—Processing photosensitive materials; Apparatus therefor
    • G03F7/42—Stripping or agents therefor
    • G03F7/422—Stripping or agents therefor using liquids only
    • G03F7/425—Stripping or agents therefor using liquids only containing mineral alkaline compounds; containing organic basic compounds, e.g. quaternary ammonium compounds; containing heterocyclic basic compounds containing nitrogen

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Wood Science & Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Manufacturing & Machinery (AREA)
  • General Chemical & Material Sciences (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Computer Hardware Design (AREA)
  • Mechanical Engineering (AREA)
  • Emergency Medicine (AREA)
  • Inorganic Chemistry (AREA)
  • Metallurgy (AREA)
  • Health & Medical Sciences (AREA)
  • Materials Engineering (AREA)
  • Detergent Compositions (AREA)
  • Cleaning Or Drying Semiconductors (AREA)

Description

1322827 玖、發明說明： 【發明所屬之技術領域】 本發明係關於清洗微電子基材之方法及洗淨組合物，尤 其係關於適用於微電子基材並對該基材具有改良之相容性 的洗淨組合物，該基材特徵為具有二氧化矽、靈敏之低k或 高k介電質和銅金屬鍍層以及鋁或鋁（銅）金屬鍍層之基材。 本發明還關於使用該洗淨組合物清洗光阻，清洗自電漿方 法產生之有機、有機金屬和無機化合物中的殘餘物，清洗 平整化方法如化學機械拋光（CMP)中產生之殘餘物，以及用 作平整化漿狀殘餘物之添加劑。 【先前技術】 已提出多種使用於微電子領域之光阻清除劑和殘餘物去 除劑，用作生產線清潔劑之下游或末端用品。在生產過程 中，於晶片基板上沈積一層光阻薄膜，然後電路設計被成 像在薄膜上。緊接著烘焙之後，將未聚合之抗蝕部分用光 阻顯影劑除去。經過反應性電漿蝕刻氣體或化學蝕刻溶液 將所得影像轉移至下層材料，該下層材料一般係介電質或 金屬。蝕刻氣體或化學蝕刻溶液選擇性地侵蝕基材上未被 光阻保護之區域。 此外，緊接著蝕刻步驟結束之後，必須從晶片上之被保 護區域除去抗蚀劑罩幕以便進行最後整理操作。該整理操 作可以在電漿灰化步驟中藉由使用合適之電漿灰化氣體或 濕化學清除劑來完成。已證明尋找一種合適之洗淨组合物 來除去此抗蝕劑罩幕材料，而不對金屬電路產生負面影 85628 響，例如腐蝕、溶解或晦暗無光，尚存在問題。 心著微電子製作積合水平的提高及被組成圖案之微電子 裝置尺寸的縮小，在該領域中越來越普遍地使用銅金屬鍍 層β低k和向k介電質。料材料對尋找可接受之洗淨組合 物提出了額外之挑戰。許多先前開發用於"傳統"或"習用” 1含有Al/Si〇2或Al(Cu)Si〇2結構之半導體裝置之製程技術 組合物，不能用於鋼金屬化之低k或高k介電質結構。例如， $於羥胺之清除劑或殘餘物去除劑組合物可以成功地用於 a洗/、有Is金屬鍍層之裝置，但實際上卻不適於具有銅金 屬鍍層之裝置。類似地’許多銅金屬化/似清除劑不適於 鋁金屬化之裝置，除非對該組合物做重大調整。 已證明緊接著電漿蝕刻和/或灰化處理之後除去此等蝕 刻和/或灰化殘餘物尚有問題，尤其係對於具有低k介電質 材科和那些用銅金屬化之基材。不能完全清除或中和此等 殘餘物可能導致吸潮及形成不期望之能夠腐姓金屬結構之 材料。電路材料被此等不良材料腐蝕並產生電路中斷以及 不利之電阻升高。 目則，用於洗淨組合物之氧化劑主要係水溶液形式。已 知氧化劑，例如普遍使用之過氧化氫和過酸很容易發生反 應或分解，特別係在廣泛用於清除組合物之有機溶劑基質 中。在此種情況下，氧化劑被消耗而不能發揮所期望之作 用。此外，含有氧化劑之微電子洗淨組合物常表現出較差 又產品安定性，特別係在較大量（如10 wt%或更多）之有機溶 劑存在下，及在較高pH範園和高處理溫度下。此外，在= 85628 1322827 性pH值，因此最好含有鹼。鹼可以0至約30 wt%，較佳地約 0.1至約10 wt%之量存在。本說明書提供之重量百分數（wt%) 係以洗淨組合物之總重計。 【實施方式】 本發明之新穎後端洗淨組合物係包含一種或多種任何氧 化劑及極性有機溶劑。該洗淨組合物可配製成高含水性、 半含水性或基於有機溶劑之配方。該洗淨組合物可以單獨 地與其他溶劑一起使用，也可與酸和驗組合使用。本發明 之洗淨組合物能夠在廣泛範圍之pH和溫度處理/操作條件 下使用，並可用於有效地除去光阻、後電漿蝕刻/灰化殘餘 物、犧牲之光吸收材料和抗反射塗層（ARC)。 此外，現已 發現特別難清洗之樣品，如高度交聯或硬化之光阻和含有 欽（如数、氧化欽或氮化数）或艇（如輕、氧化纽和氮化la)之 結構也可以容易地用本發明之洗淨組合物清洗。 本發明之組合物可以含有任何適用於微電子洗淨組合物 之氧化劑。作為此類氧化劑之實例可提及的有，例如，過 氧化物（尤其係過氧化氫），從過氧化氫和含氧酸得到之過氧 水合物之分子加合物，酷酸氧化锆和偶氮化合物，舉例來 說，過碳酸鋼，過棚酸#3，以及過蛾酸鹽（1〇4_)、過棚酸鹽、 過短酸鹽（MnO/)、過硫酸、過硫酸鹽和燒氧基鹵化物（例如 t-BuOCl)〇也可以使用其他由過氧化氫與有機分子經過取代 反應生成之過氧化合物，但較不佳。實例包括烷基過氧化 物、過氧酸、二酿基過氧化物和酮類過氧化物。也可以使 用類似之H2〇2與無機分子之取代產物，如過氧硫酸。本發 85628 1322827 地、Ο · 1至約5 wt%之量存在。任何合適之鹼都可用於洗淨 組合物。鹼較佳地為氫氧化銨，或從氨或非氨類物質衍生 之驗▲希望將該組合物用於清洗銅金屬化之結構時，驗 較佳地為非氨類物質衍生之鹼；而當希望將該組合物用於 清洗含鋁之結構時，鹼較佳地為氫氧化銨、由氨衍生之鹼 或非氨類物質衍生之鹼，並與腐蝕抑制辅溶劑和/或腐蝕抑 制劑組合使用，如下文所揭示。作為合適之非氨衍生鹼可 提及的有氫氧化四烷基銨，如那些式R4N+〇H-之物質，其中 每一個R都獨立地係一取代或未取代之烷基基團，較佳地含 1至22個碳原子，且更佳地為丨至4個碳原子。在該組合物中 有用之非氨衍生鹼可提及的有，例如，氫氧化四甲基銨， 氫氧化四丁基銨，膽鹼氫氧化物及類似化合物。無機鹼， 例如氫氧化鉀、氫氧化鈉及類似物質也可以用作所述之鹼。 如則所指，本發明洗淨組合物也可以在酸性口11條件下使 用，且可以使用任何合適之酸性組分，例如^1(：1或hf，以 提供給組合物酸性pH值所需之充足用量來使用該酸性組 分。 洗淨組合物视需要可含有一種或多種腐蝕抑制性之辅溶 劑。用於本發明組合物之較佳腐蝕抑制性輔溶劑係那些具 有以下通式之物質：
W-mjn-Y 其中化和尺2各自獨立地選自H、烷基（較佳地為1至6個碳原 子之烷基）、芳基（較佳地為3至14個碳原子之芳基）、〇厌3和 S〇2IU ; η係2至6之數字，較佳地為2或3 ;冒和γ各自獨立地 85628 •10· 選自OR3和S〇2R4 ;且R3和R4各自獨立地選自H、烷基（較佳 地為含1至6個碳原子之烷基）和芳基（較佳地為 3至14個碳原 子之万基）。作為此類腐触抑制性辅溶劑之實例可提及的 有，例如，乙二醇、丙二醇、丙三醇及類似物質。如果洗 淨組合物所需之極性有機溶劑不係一具有上述通式之飽和 醇，則該飽和醇可以輔溶劑形式存在。輔溶劑在組合物中 之用量為0至約80 wt%，較佳地為約i至約5〇 wt%，最佳地 為約1至30 wt%。 本發明組合物也可含有其他腐蝕抑制劑，較佳地為含有 兩個或多個與芳香環直接連接之〇H、〇尺6和/或S〇2R6R7基團 之^基化合物’其中R6、尺7和R8各自獨立地係烷基（較佳地 為含1至6個碳原子之烷基）或芳基（較佳地為含6至14個碳原 子；芳基）。作為此類腐蝕抑制劑之較佳實例可提及的有鄰 苯二盼、鄰苯三酚、沒食子酸、間苯二酚以及類似物質。 此類另外之腐蝕抑制劑用量為〇至約丨5 wt%，較佳地約〇 1 至約10 wt% ’最佳地約0.5至約5 wt%。 有機或無機螯合劑或金屬複合劑並非必要，但能夠提供 實貝性之益處’例如改善產品安定性。合適之螯合劑或複 合劑之實例包括，但不限於反式_1,2_環己二胺四乙酸（CyDTA) 、乙二胺四乙酸（EDTA)、錫酸鹽、焦磷酸鹽（或酯）、亞烷 基-二膦酸衍生物（即乙烷-1-羥基-1,1-二膦酸酯）、含乙二 胺、二伸乙基三胺或三伸乙基四胺功能結構之膦酸化合物 [即乙二胺四（亞甲基膦酸）(edtmp)、二伸乙基三胺五（亞曱 基膦酸）、三伸乙基四胺六（亞甲基膦酸）]。螯合劑在組合物 85628 •11· 1322827 中以0至約5 wt% ’較佳地约0 1至約2 wt%之量存在。各種 膦酸化合物之金屬螯合或複合劑，如乙二胺四（亞甲基膦酸） (EDTMP)可以大大提高含氧化劑之本發明洗淨组合物在酸 性和鹼性條件下之安定性，因此一般為較佳的。 如果需要，在本發明洗淨組合物中還可使用其他氧化劑 之士疋劑。此等安定劑之用量範圍為〇至約丨〇 wt%，較佳地 為約0 · 1至5 wt°/〇。此等安定劑之實例包括，但不限於N_乙 醯苯胺和矽酸鹽（或酯），較佳地為不含金屬離子之矽酸鹽， 如矽酸四烷基銨（包括羥基和烷氧基烷基），其中烷基較佳地 含1至4個碳原子。此類矽酸鹽（或酯）包括正矽酸四乙酯、矽 酸四甲基銨鹽、四（2-羥乙基）正矽酸酯及類似物質。 可選擇地：其他金屬腐蝕抑制劑，如苯並三唑，其用量 為0至5 wt% ’較佳地約〇 1至2 wt〇/〇。 洗淨組合物视需要還可以含有表面活性劑，例如二甲基 己块醇（Surfynol-6丨）、乙氧基化之四甲基癸炔二醇（Surfyn〇i_ 465)，聚四氟乙埽十六烷氧基丙基三甲銨乙内醋（z〇nyi FSK)，ZonylFSH表面活性劑及類似物質。表面活性劑一般 以0至約5 wt〇/〇，〇.1至約3 wt〇/〇之量存在。 2淨組合物視需要還可在洗淨組合物中含有氣化物，例 如氟化四甲隸、氟細T隸和氟化銨。其他合適之氟 化物包括，例如氟硼酸鹽、氟硼酸四丁基胺、六氟化銘、 氟化梯及類似物f。氟化物也分以〇至1〇心，較佳地約〇1 至5 wt%之量存在。 本發明洗淨組合物之實例列於下表〗至9中。 85628 •12- 1322827 表1 組合物/重量份數
成分 A B C D E F G HEP 30 30 30 30 60 25% TMAH 2 2.6 2 2 2 5 5 ACA 0.2 0.2 CyDTA 0.2 0.4 0.4 TEOS 1 DMPD 30 60 SFL - EG CAT 60% EHDP EDTMP TMAF 10% TMAS 29% NH4OH 30%H2〇2 2.5 2.5 2.5 2.5 2.5 5 5 水 15 15 15 15 15 30 30 XM-188 XM-188A XM-191 IN HC1 20% CH 85628 • 14- 1322827 表2 組合物/重量份數
成分 H I J K L M N HEP 30 25% TMAH 1 10 8.8 4 3 4.9 ACA CyDTA 0.92 0.35 0.24 TEOS DMPD SFL ·. 120 50 30 37 EG 10 CAT 60% EHDP 0.24 0.29 EDTMP TMAF 10% TMAS 1 29% NH4OH 30% H2〇2 2 10 8.8 2.5 4.2 2.5 4 水 15 60 9 XM-188 40 40 XM-188A XM-191 ' IN HC1 20% CH 85628 -15- 1322827 表3 組合物/重量份數
成分 0 P Q R S T U HEP 25% TMAH 5 20 4.4 7.8 ACA CyDTA TEOS DMPD SFL ·, 200 37.5 42.5 EG 10.3 15 CAT 60% EHDP 1.5 2.6 EDTMP 0.68 TMAF 2 10% TMAS 29% NH4OH 30% H2〇2 19.2 18.7 4.8 5 4.3 5 水 20 70 22.5 10.6 3.5 XM-188 200 40 XM-188A 57.4 40 XM-191 IN HC1 20% CH 85628 -16- 1322827 表4 組合物/重量份數
成分 V W X Y Z AA BB HEP 25% TMAH ACA CyDTA 0.39 0.39 TEOS DMPD SFL 50 50 50 50 40 EG 15 15 CAT 3 3.5 3.5 1.5 60% EHDP EDTMP 0.6 0.6 0.6 TMAF 10% TMAS 29% NH4OH 1.4 1.9 1.4 1.9 2 30% H2〇2 6.4 5.8 5.5 7.2 6.7 6.7 7.6 水 12.5 20 12.5 20 30 XM-188 40 40 XM-188A XM-191 IN HC1 20% CH 85628 -17· 1322827 表5 组合物/重量份數
成分 CC DD EE FF GG HH II HEP 25% TMAH 2 ACA CyDTA 0.39 TEOS DMPD SFL 50 50 60 60 EG 50 CAT 60% EHDP EDTMP 0.6 TMAF 10% TMAS 29% NH40H 1.7 2.2 30% H2〇2 7 7.3 5 5 5 6.2 2.5 水 12.5 20 XM-188 40 XM-188A 57 XM-191 IN HC1 1 20% CH 85628 -18 - 1322827 表6 組合物/重量份數
成分 JJ KK LL MM NN 〇〇 HEP 25% TMAH 5 5 6 5 6 ACA CyDTA TEOS DMPD SFL ' EG CAT 60% EHDP EDTMP TMAF 10% TMAS 29% NH4OH 30% H2〇2 7 7.5 6 2.5 7 6 水 5 XM-188 80 40 80 XM-188A XM-191 62.5 64.5 62.5 IN HC1 1 20% CH 85628 -19- 1322827 表7 組合物/重量份數
成分 PP QQ RR SS TT UU VV HEP 25% TMAH 25 25 20 25 17.5 17.5 2.5 ACA CyDTA 3 3 2.5 1.5 0.23 TEOS DMPD SFL 300 300 300 300 150 150 30 EG 5 40 20 15 CAT 3 60% EHDP EDTMP 1.8 1.8 TMAF 10% TMAS 29% NH4OH 30% H202 36.8 37.3 36.7 37.2 26 24 5.8 水 35 45 45 45 50 50 7.5 XM-188 XM-188A XM-191 IN HC1 20% CH 85628 -20 - 1322827 表8 组合物/重量份數 成分 WW XX YY zz AAA BBB ccc HEP 25% TMAH 3.1 7.5 ACA CyDTA 0.39 0.39 0.28 1.2 0.8 TEOS DMPD 7.5 SFL 50 50 50 50 74 75 EG CAT 3.5 3.5 60% EHDP EDTMP 0.6 0.6 TMAF 10% TMAS 29% NH4OH 1.4 1.9 1.4 1.9 30% H2〇2 6.8 7.6 6.4 7.25 14.7 13.6 14 水 12.5 20 12.5 20 40 25 25 XM-188 XM-188A XM-191 IN HC1 20% CH 12 85628 -21 - 1322827 表9 組合物/重量份數
成分 DDD EEE HEP 75 25% TMAH 6.25 7.5 ACA CyDTA 0.6 1.2 TEOS DMPD SFL EG 75 CAT 60% EHDP EDTMP TMAF 10% TMAS 29% NH4OH 30% H2〇2 13.4 13.6 水 25 25 XM-188 XM-188A XM-191 IN HC1 20% CH 85628 -22- 1322827 本發明洗淨組合物對銅和鋁之蝕刻速率如下表10中之蝕 刻速率數值所示。蝕刻速率使用以下測試步驟確定。 使用約13 X 50毫米之鋁或銅箔片。測定箔片之厚度。使 用2-丙醇、蒸餾水及丙酮清洗箔片之後，將箔片在乾燥箱 中烘乾。然後將清潔乾燥之金屬箔片置於寬鬆蓋蓋之瓶 中，該瓶中盛有預熱之本發明洗淨組合物，並將其在指定 溫度下放置於真空烘箱中2至4小時。緊接著處理之後，從 真空烘箱和瓶子中取出清潔之金屬箔，用大量蒸餾水沖 洗，並在乾燥箱中乾燥約一小時，然後冷卻至室溫，然後 用重量損失或重量變化確定蚀刻速率。 表10 表1至表6 45°C下對A1 65°C下對A1 45°C下對Cu 65°C下對Cu 之组合物 之蝕刻速率 之蝕刻速率 之蝕刻速率 之蝕刻速率 (A/min) (A/min) (A/min) (A/min) V 6 39 W 3 12 Y 8 39 Z 21 70 AA 9 18 BB 20 CC 19 DD 29 II 3 EE 8 JJ <1 KK <1 LL 1.2 MM 2.6 羥胺為主 之清除劑 (EKC-265) 相容 相容 不相容 不相容 85628 -23 - 1322827 根據如下測試步驟，評價針對各種介電質之本發明組合 物JJ和NN (表6)對中間層介電質（ILD)之蝕刻速率。 晶片薄膜厚度使用魯道爾夫干涉計（Rudolph Interferometer) 進行測量。將晶片（具有沈積於矽晶片上之ILD材料）浸入 指定溫度之指定洗淨組合物中3 0分鐘，緊接著用去離子水 沖洗，並在氮氣流下乾燥。緊接著處理之後再次測量厚度， 然後根據膜厚度之變化計算由指定之處理產生之蚀刻速 率。 組合物 JJ (表 11)、NN (表 12)、HH (表 13)、FF (表 14)和 GG (表15)對IDL之蝕刻速率如下。 表11 介電質 在7〇°C下之 姓刻速率@ (A/min) 摻碳之氧化物（CDO) <1 氮化矽（SiN) <1 正矽酸四乙酯（pTEOS) <1 SiLKTM有機聚合物 <1 氟化矽酸鹽玻璃（FSG) <1 F0x-16TM可流動氧化物 <1 Coral™摻碳氧化物 3 Black DiamondTM換碳氧化物 9.5 85628 -24 - 1322827 表12 介電質 在70°C下之 姓刻速率@ (A/min) 摻碳之氧化物（CDO) <1 氮化矽（SiN) <1 正矽酸四乙酯（pTEOS) <1 SiLKTM有機聚合物 <1 表13 介電質 在60°C下之 姓刻速率@ (A/min) 摻碳之氧化物（CDO) n=1.40 <1 氮化矽（SiN) η=2·0 3 正矽酸四乙酯（pTEOS) η= 1.46 1 SiLKTM有機聚合物η=1.63 <1 表14 介電質 在60°C下之 姓刻速率@ (A/min) 摻碳之氧化物（CPO) n=1.40 <1 氮化矽（SiN) ιι=2·0 2 正矽酸四乙酯（pTEOS) n=l .46 1 SiLK™有機聚合物n=1.63 <1 85628 -25- 1322827 表15 介電質 在60°C下之 蝕刻速率@ (A/min) 摻碳之氧化物（CPO) η=1·40 <1 氮化矽（SiN) η=2·0 2 正矽酸四乙酯（pTEOS) η=1.46 1 SiLK™有機聚合物η=1.63 <1 本發明組合物之清洗性能藉由如下測試進行說明，其中 將一微電子結構在指定溫度和時間下浸泡於清洗溶液中， 該微電子結構含有下列結構之晶片，即光阻/摻碳之氧化物 /氮化矽/銅（其中氮化矽打孔以使銅暴露出來），然後用水漂 洗，乾燥並用SEM探測檢測清潔程度。結果列於表16。 表16 組合物 G Η 00 清洗條件和 35°C /30分鐘 55°C/20 分鐘 70°C/20 分鐘 結果 100%清潔 100%清潔 100%清潔 本發明組合物之清洗性能還藉由如下測試進行說明，其 中將一包括含有下列結構，即TiN/Al/TiN/Ti/Si之鋁晶片之 微電子結構，在指定之溫度和時間下浸泡於清洗溶液中， 然後用水漂洗，乾燥並用SEM探測檢測清潔程度。結果列 於表17。 85628 26· 表17
VV 55°C/20 分鐘 100%清潔，具有理 想之基材相容性 組合也 清洗條件和結果 本發明洗淨組合物訝鋁之蝕刻速率也如下表18中之蝕刻 速率資料所π。使用如下測試步驟確定蝕刻速率。 使用大約13 X 50毫米之鋁箔片，測定鋁箔片之厚度。使 用2-丙醇、蒸餘水和丙酮清洗㈣之後，將㈣在乾燥箱 中烘乾。然像將清潔乾燥之金屬箔置於寬鬆蓋蓋之瓶中， 該瓶盛有預熱之本發明洗淨組合物，並在指定溫度下放置 於真2烘箱中2至4小日争。緊接著處理之後，從纟空供箱和 瓶子中取出清潔之金屬$，用大量蒸館水沖洗，並在乾燥 粕中乾燥約一小時，然後冷卻至室溫，然後基於重量損失 或重量變化確定蝕刻速率。 表18 表7和表8之 組合物 在45°c下對A1之蝕刻速 (A/min) VV 3 WW 21 XX 9 YY 6 ~ ZZ 8 儘管在本發明中已經結合具體實施方案描述了本發明， 但在不偏離本發明所揭示之創新概念下，對其進行改變、 修改和變化係贊許的。因此，希望將所有此等改變、修改 和變化都包含在如下申請專利範圍之精神和範圍之内。 -27- 85628

Claims (1)

  1. 09&5125號專利申請案 丨作厂… ' •一 . :.¾史捷專利範圍替換本(99年1月）(11 J (成‘〜' · ;:'. 拾、申請專利範圍： —' …………… 1種用於自微電子基材清洗光阻及殘餘物·^洗淨組合 物，該洗淨組合物係由以下所組成： 自0.1至30重量％之過氧化氫 自1至99重量％之環了颯作為極性有機溶劑； 自大於0至30重量％之氫氧化四烧基銨作為驗； 自0.1至5重量％之螯合或金屬錯合劑，其選自由反 -12-環己二胺四乙酸及乙 群；及
    式
    自0.1至98重量。/。水。 申-月專利範圍第1項之洗淨組合物，其中在該組合物中 之環丁砜極性有機溶劑以自10至90重量％之量存在。 3.如申請專利範圍第2項之洗淨組合物，其係由環丁諷、氮 氧化四甲基銨、反式]，2_環己二胺四乙酸、過氧化氫和 水所組成。 4·如申請專利範圍第2項之洗淨組合物’其係由環丁賊、氯 氧化四甲基録 '乙二胺四（亞曱基膦酸）、過氧化氣和水所 .組成。 5·種自微電子基材清洗光阻或殘餘物之方法，該方法包 括使該基材與一洗淨組合物接觸，歷經足以自該基材清 先光阻及殘餘物的時間，其中該洗淨組合物係包含如申 請專利範圍第丨至4項中任一項之組合物。 6.如申請專利範圍第5項之方法其中所清洗之微電子基材 之特徵為包含有銅金屬鍍層及介電質，該介電質選自由 85628-99〇l25.doc 1322827 二氧化矽、低k介質和高k介質組成之群。
    2- 85628-990125.doc
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PL208299B1 (pl) 2011-04-29
CN102061228A (zh) 2011-05-18
KR20050019103A (ko) 2005-02-28
EP2034365A3 (en) 2009-11-11
JP2005529487A (ja) 2005-09-29
WO2003104900A3 (en) 2004-02-19
EP2034365A2 (en) 2009-03-11
JP4304154B2 (ja) 2009-07-29
MY139208A (en) 2009-08-28
EP1520211A2 (en) 2005-04-06
RS50930B (sr) 2010-08-31
BR0311827A (pt) 2005-03-29
CA2488735A1 (en) 2003-12-18
CN1659481A (zh) 2005-08-24
ZA200409621B (en) 2006-07-26
RS106204A (en) 2007-02-05
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US7419945B2 (en) 2008-09-02
IN2004CH02761A (zh) 2006-02-10
US20050239673A1 (en) 2005-10-27
AU2003238773A1 (en) 2003-12-22
KR100958069B1 (ko) 2010-05-17
IL165580A0 (en) 2006-01-15
IL165580A (en) 2009-05-04
NO20050076L (no) 2005-01-06

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