TWI802264B - 抗電漿腐蝕薄膜結構與其製造方法 - Google Patents

抗電漿腐蝕薄膜結構與其製造方法 Download PDF

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TWI802264B
TWI802264B TW111105021A TW111105021A TWI802264B TW I802264 B TWI802264 B TW I802264B TW 111105021 A TW111105021 A TW 111105021A TW 111105021 A TW111105021 A TW 111105021A TW I802264 B TWI802264 B TW I802264B
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plasma
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吳宗豐
林佳德
李文亮
蔡宇硯
蘇修賢
邱國揚
陳柏翰
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翔名科技股份有限公司
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Abstract

一種抗電漿腐蝕薄膜結構與其製造方法,包括一基材、一第一抗腐蝕層、一第二抗腐蝕層與第三抗腐蝕層。第一抗腐蝕層設置於該基材上,並與該基材接觸。第二抗腐蝕層設置於該第一抗腐蝕層上。第三抗腐蝕層設置於該第二抗腐蝕層上。其中,該第一抗腐蝕層與該第三抗腐蝕層是經由氣相沉積方法形成。其中,該第二抗腐蝕層是經由電漿噴塗形成。

Description

抗電漿腐蝕薄膜結構與其製造方法
一種薄膜結構與其製造方法,特別是一種抗電漿腐蝕薄膜結構。
在半導體產業中,電漿廣泛應用於各式半導體製程設備中,然而隨著製程能力的進步,對於腔體部件表面處理要求越來越嚴格,目前設備腔體大部分為鋁製腔體,但鋁抗電漿侵蝕能力不佳,因此業界大多是對設備與電漿接觸的部位進行表面微結構處理,使其具備抗電漿腐蝕的特性。 而目前常用的表面微結構處理是電漿噴塗,是以氧化釔(Y 2O 3)或釔鋁石榴石(Yttrium aluminum garnet,YAG)等材料進行表面處理,其抗電漿腐蝕性優於鋁。但因該噴塗材料表面具有多孔隙特性,不利於半導體製程。電漿化學氣相沉積(Plasma-enhanced chemical vapor deposition,PECVD)、原子層沉積(Atomic layer deposition,ALD)或物理氣相沉積(Physical vapor deposition,PVD)雖可產生無孔隙的薄膜,但其沉積速度慢並且成本昂貴,要達到與電漿噴塗相同的厚度,需要更多的時間與成本。 因此,如何解決上述問題,便是本領具通常知識者值得去思量的。
本發明提供一種抗電漿腐蝕薄膜結構,利用緻密、鬆散、緻密多層次的抗腐蝕層形成抗腐蝕結構,可用較少的時間與成本形成,並保持與習知完全緻密抗腐蝕層相當的抗腐蝕特性。其具體技術手段如下: 一種抗電漿腐蝕薄膜結構,包括一基材、一第一抗腐蝕層、一第二抗腐蝕層與第三抗腐蝕層。第一抗腐蝕層設置於該基材上,並與該基材接觸。第二抗腐蝕層設置於該第一抗腐蝕層上。第三抗腐蝕層設置於該第二抗腐蝕層上。其中,該第一抗腐蝕層與該第三抗腐蝕層是經由氣相沉積方法形成。其中,該第二抗腐蝕層是經由電漿噴塗形成。 上述之抗電漿腐蝕薄膜結構,其中,氣相沉積方法為電漿化學氣相沉積(PECVD)、原子層沉積(ALD)或物理氣相沉積(PVD)。 上述之抗電漿腐蝕薄膜結構,其中,該第一抗腐蝕層與該第三抗腐蝕層的厚度為5~20µm;該第二抗腐蝕層的厚度為100~250µm。 上述之抗電漿腐蝕薄膜結構,其中,該第二抗腐蝕層與該第一抗腐蝕層的厚度比介於5~50之間;該第二抗腐蝕層與該第三抗腐蝕層的厚度比介於5~50之間。 上述之抗電漿腐蝕薄膜結構,其中,該第一抗腐蝕層、該第二抗腐蝕層與該第三抗腐蝕層的材料包括氧化釔(Y 2O 3)、氟氧化釔(YOF)或釔鋁石榴石(Yttrium aluminum garnet,YAG)。 本發明還提供一種抗電漿腐蝕薄膜結構製造方法,包括: S10:提供一基材; S20:在該基材上以氣相沉積方法形成第一抗腐蝕層; S30:在該第一抗腐蝕層上以電漿噴塗形成一第二抗腐蝕層;及 S40:在該第二抗腐蝕層上以氣相沉積方法形成一第三抗腐蝕層。 上述之抗電漿腐蝕薄膜結構製造方法,其中,在步驟S20中,氣相沉積方法為物理氣相沉積。 上述之抗電漿腐蝕薄膜結構製造方法,其中,該物理氣相沉積,參數控制為腔體溫度25℃~200℃、蒸鍍速率0.1~1.5nm/s、離子源電漿功率輔助電子束電流100~1500mA、電壓100-1500V、氣體流量氬氣10~50sccm、氧氣10~100sccm、製程壓力2.0E-2~1.0E-6 Torr。 上述之抗電漿腐蝕薄膜結構製造方法,其中,在步驟S20中,氣相沉積方法為原子層沉積。 上述之抗電漿腐蝕薄膜結構製造方法,其中,該原子層沉積之參數控制為:反應氣體流量10~100sccm,腔體溫度100~400℃ 、製程壓力1~10 Torr。 上述之抗電漿腐蝕薄膜結構製造方法,其中,在步驟S30中,該電漿噴塗之電弧電流300~600A、載台轉速5~30RPM、載氣氣體為氬氣(Ar)、氮氣(N 2),氣體流量10~30L/min。
請參閱圖1,圖1所繪示為本發明之抗電漿腐蝕薄膜結構。本發明之抗電漿腐蝕薄膜結構100包括一基材101、一第一抗腐蝕層110、一第二抗腐蝕層120與一第三抗腐蝕層130。第一抗腐蝕層110設置在基材101上,並且第一抗腐蝕層110與基材101接觸。第二抗腐蝕層120設置在第一抗腐蝕層110上,第三抗腐蝕層130設置在第二抗腐蝕層120上。換句話說,第二抗腐蝕層120是夾在第一抗腐蝕層110與第三抗腐蝕層130之間,形成多層次的抗腐蝕結構。而基材101例如為半導體設備之腔體的內表面層,此內表面層可由鋁所製成。 此外,第一抗腐蝕層110與第三抗腐蝕層130的厚度個別為5~20微米(µm),且第一抗腐蝕層110與第三抗腐蝕層130可為相同或不同的厚度;第二抗腐蝕層的厚度為100~250微米(µm)。因此,第一抗腐蝕層110、第二抗腐蝕層120與第三抗腐蝕層130的厚度並不相同。更明確的說,第二抗腐蝕層120的厚度比第一抗腐蝕層110與第三抗腐蝕層130的厚度都來得厚。在一實施例中,第二抗腐蝕層120與第一抗腐蝕層110的厚度比介於5~50之間;第二抗腐蝕層120與第三抗腐蝕層130的厚度比介於5~50之間。 在本實施例中,第一抗腐蝕層110與第三抗腐蝕層130是較為緻密的抗腐蝕層,而第二抗腐蝕層120則是相對鬆散的抗腐蝕層。透過第一抗腐蝕層110、第二抗腐蝕層120與第三抗腐蝕層130形成緻密-鬆散-緻密的多層次抗腐蝕結構,提供抗腐蝕特性以保護基材101。 接著,請參閱圖2至圖6,圖2至圖6所繪示為本發明抗電漿腐蝕薄膜結構的製作方法。首先,進行步驟S10,提供一基材101(如圖3所示)。接著,進行步驟S20,在基材101上以氣相沉積方法形成第一抗腐蝕層110(如圖4所示)。具體來說,第一抗腐蝕層110所使用的氣相沉積方法為電漿化學氣相沉積(PECVD)、原子層沉積(ALD)或物理氣相沉積(PVD),能夠形成較為緻密、不具備多孔性的第一抗腐蝕層110。緻密、不具備多孔性的第一抗腐蝕層110有效減少基材101釋出氣體,並可避免電漿腐蝕基材101而產生粉塵。同時可作為緩衝材料,增加第二抗腐蝕層120在抗電漿腐蝕薄膜結構100的附著性。 在一實施例中,若使用物理氣相沉積(PVD)形成第一抗腐蝕層110,其具體方式是選用Y 2O 3、YOF與YAG作為底材,並透過電子束轟擊蒸鍍(E-gun)與離子束輔助沉積來形成第一抗腐蝕層110。第一抗腐蝕層110形成的過程中,其參數控制為腔體溫度25℃~200℃、蒸鍍速率0.1~1.5nm/s、離子源電漿功率輔助電子束電流100~1500mA、電壓100-1500V、氣體流量氬氣10~50sccm、氧氣10~100sccm、製程壓力2.0E-2~1.0E-6 Torr。 在另一實施例中,若使用原子層沉積(ALD)形成第一抗腐蝕層110,具體來說是選用三(環戊二烯)釔(Y(Cp) 3)、三(2,2,6,6-四甲基-3,5-庚二酮酸)釔(Y(thd) 3)與三(乙基環戊二烯基)釔(Y(EtCp) 3)做為前驅物,在以水(H 2O)與氧(O 2)作為反應氣體,從經由原子層沉積形成第一抗腐蝕層110。第一抗腐蝕層110形成的過程中,反應氣體流量10~100sccm,腔體溫度100~400℃ 、製程壓力1~10 Torr。 接著,進行步驟S30,在第一抗腐蝕層110上以電漿噴塗形成一第二抗腐蝕層120(如圖5所示)。具體來說,是以氧化釔(Y 2O 3)、氟氧化釔(YOF)或釔鋁石榴石(YAG)為噴塗材料形成第二抗腐蝕層120。此外,還可對噴塗材料進行預熱,預熱的溫度約為100~300℃。並且在形成過程中,其設定參數為電弧電流300~600A、載台轉速5~30RPM、載氣氣體為氬氣(Ar)、氮氣(N 2),氣體流量10~30L/min。第二抗腐蝕層120是在第一抗腐蝕層110上形成,因此可保護第一抗腐蝕層,提高抗電漿腐蝕薄膜結構100的整體抗腐蝕性與耐用性。 接著,進行步驟S40,在第二抗腐蝕層120上氣相沉積方法形成第三抗腐蝕層130(如圖6所示)。具體來說,第三抗腐蝕層130所使用的氣相沉積方法為電漿化學氣相沉積(PECVD)、原子層沉積(ALD)或物理氣相沉積(PVD),能夠形成較為緻密、不具備多孔性的第三抗腐蝕層130。 在一實施例中,若使用物理氣相沉積(PVD)形成第三抗腐蝕層130,其具體方式是選用Y 2O 3、YOF與YAG作為底材,並透過電子束轟擊蒸鍍(E-gun)與離子束輔助沉積來形成第三抗腐蝕層130。第三抗腐蝕層130形成的過程中,其參數控制為腔體溫度25℃~200℃、蒸鍍速率0.1~1.5nm/s、離子源電漿功率輔助電子束電流100~1500mA、電壓100-1500V、氣體流量氬氣10~30sccm、氧氣10~100sccm、製程壓力2.0E-2~1.0E-6 Torr。 在另一實施例中,若使用原子層沉積(ALD)形成第三抗腐蝕層130,具體來說是選用三(環戊二烯)釔(Y(Cp) 3)、三(2,2,6,6-四甲基-3,5-庚二酮酸)釔(Y(thd) 3)與三(乙基環戊二烯基)釔(Y(EtCp) 3)做為前驅物,在以水(H 2O)與氧(O 2)作為反應氣體,從經由原子層沉積形成第三抗腐蝕層130。第一抗腐蝕層110形成的過程中,反應氣體流量10~100sccm,腔體溫度100~400℃ 、製程壓力1~10 Torr。 第三抗腐蝕層130與第一抗腐蝕層110均是經由氣相沉積方法形成,但不限於與第一抗腐蝕層110相同的氣相沉積方法形成(PECVD、ALD或PVD)形成。因此第三抗腐蝕層130為緻密、不具備多孔性的抗腐蝕層。第三抗腐蝕層130可填補第二抗腐蝕層120上的空隙,進一步提高抗電漿腐蝕薄膜結構100的表面耐受性。經過步驟S10~S40即完成抗電漿腐蝕薄膜結構100。 本發明之抗電漿腐蝕薄膜結構100透過以不同方法形成的第一抗腐蝕層110、第二抗腐蝕層120與第三抗腐蝕層130,進一步形成以緻密(第一抗腐蝕層110)、鬆散(第二抗腐蝕層120)、緻密(第三抗腐蝕層130)組成的抗腐蝕結構,其抗腐蝕特性接近等同厚度且完全緻密的抗腐蝕結構。因此,相較於完全緻密的抗腐蝕結構,本發明緻密、鬆散、緻密的抗腐蝕結構可用較少的時間與成本形成,並提供相當的抗腐蝕特性。 本發明說明如上,然其並非用以限定本發明所主張之專利權利範圍。其專利保護範圍當視後附之申請專利範圍及其等同領域而定。凡本領域具有通常知識者,在不脫離本專利精神或範圍內,所作之更動或潤飾,均屬於本發明所揭示精神下所完成之等效改變或設計,且應包含在下述之申請專利範圍內。
100:抗電漿腐蝕薄膜結構 101:基材 110:第一抗腐蝕層 120:第二抗腐蝕層 130:第三抗腐蝕層 S10~S40:流程圖步驟
圖1所繪示為本發明之抗電漿腐蝕薄膜結構。 圖2至圖6所繪示為本發明抗電漿腐蝕薄膜結構的製作方法。
100:抗電漿腐蝕薄膜結構
101:基材
110:第一抗腐蝕層
120:第二抗腐蝕層
130:第三抗腐蝕層

Claims (11)

  1. 一種抗電漿腐蝕薄膜結構,包括: 一基材; 一第一抗腐蝕層,設置於該基材上,並與該基材接觸; 一第二抗腐蝕層,設置於該第一抗腐蝕層上;及 一第三抗腐蝕層,設置於該第二抗腐蝕層上; 其中,該第一抗腐蝕層與該第三抗腐蝕層是經由氣相沉積方法形成; 其中,該第二抗腐蝕層是經由電漿噴塗形成。
  2. 如請求項1所述之抗電漿腐蝕薄膜結構,其中,氣相沉積方法為電漿化學氣相沉積(PECVD)、原子層沉積(ALD)或物理氣相沉積(PVD)。
  3. 如請求項1所述之抗電漿腐蝕薄膜結構,其中,該第一抗腐蝕層與該第三抗腐蝕層的厚度為5~20µm;該第二抗腐蝕層的厚度為100~250µm。
  4. 如請求項1所述之抗電漿腐蝕薄膜結構,其中,該第二抗腐蝕層與該第一抗腐蝕層的厚度比介於5~50之間;該第二抗腐蝕層與該第三抗腐蝕層的厚度比介於5~50之間。
  5. 如請求項1所述之抗電漿腐蝕薄膜結構,其中,該第一抗腐蝕層、該第二抗腐蝕層與該第三抗腐蝕層的材料包括氧化釔(Y 2O 3)、氟氧化釔(YOF)或釔鋁石榴石(Yttrium aluminum garnet,YAG)。
  6. 一種抗電漿腐蝕薄膜結構製造方法,包括: S10:提供一基材; S20:在該基材上以氣相沉積方法形成第一抗腐蝕層; S30:在該第一抗腐蝕層上以電漿噴塗形成一第二抗腐蝕層;及 S40:在該第二抗腐蝕層上以氣相沉積方法形成一第三抗腐蝕層。
  7. 如請求項6所述的抗電漿腐蝕薄膜結構製造方法,其中,在步驟S20中,氣相沉積方法為物理氣相沉積,
  8. 如請求項7所述的抗電漿腐蝕薄膜結構製造方法,其中,該物理氣相沉積,參數控制為:腔體溫度25℃~200℃、蒸鍍速率0.1~1.5nm/s、離子源電漿功率輔助電子束電流100~1500mA、電壓100-1500V、氣體流量氬氣10~50sccm、氧氣10~100sccm、製程壓力2.0E-2~1.0E-6 Torr。
  9. 如請求項6所述的抗電漿腐蝕薄膜結構製造方法,其中,在步驟S20中,氣相沉積方法為原子層沉積,
  10. 如請求項9所述的抗電漿腐蝕薄膜結構製造方法,其中,該原子層沉積之參數控制為:反應氣體流量10~100sccm,腔體溫度100~400℃ 、製程壓力1~10 Torr。
  11. 如請求項6所述的抗電漿腐蝕薄膜結構製造方法,其中,在步驟S30中,該電漿噴塗之參數控制為:電弧電流300~600A、載台轉速5~30RPM、載氣氣體為氬氣(Ar)、氮氣(N 2),氣體流量10~30L/min。
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW202202469A (zh) * 2020-06-30 2022-01-16 美商應用材料股份有限公司 基於氧化釔之塗層及塊體組成物
TWM630158U (zh) * 2022-02-11 2022-08-01 翔名科技股份有限公司 抗電漿腐蝕薄膜結構

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW202202469A (zh) * 2020-06-30 2022-01-16 美商應用材料股份有限公司 基於氧化釔之塗層及塊體組成物
TWM630158U (zh) * 2022-02-11 2022-08-01 翔名科技股份有限公司 抗電漿腐蝕薄膜結構

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