TW556268B - Method for fabricating hydrogenated silicon oxycarbide thin film and PECVD apparatus therefor - Google Patents
Method for fabricating hydrogenated silicon oxycarbide thin film and PECVD apparatus therefor Download PDFInfo
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- TW556268B TW556268B TW091119835A TW91119835A TW556268B TW 556268 B TW556268 B TW 556268B TW 091119835 A TW091119835 A TW 091119835A TW 91119835 A TW91119835 A TW 91119835A TW 556268 B TW556268 B TW 556268B
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- 238000000623 plasma-assisted chemical vapour deposition Methods 0.000 title claims abstract description 20
- 239000010409 thin film Substances 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims description 34
- 238000006243 chemical reaction Methods 0.000 claims abstract description 46
- 239000007789 gas Substances 0.000 claims abstract description 38
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 17
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000001301 oxygen Substances 0.000 claims abstract description 17
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 17
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 238000010438 heat treatment Methods 0.000 claims abstract description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 39
- 239000010703 silicon Substances 0.000 claims description 39
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 33
- 239000010408 film Substances 0.000 claims description 21
- 230000008569 process Effects 0.000 claims description 19
- 238000004519 manufacturing process Methods 0.000 claims description 16
- 238000005507 spraying Methods 0.000 claims description 10
- GYIODRUWWNNGPI-UHFFFAOYSA-N trimethyl(trimethylsilylmethyl)silane Chemical compound C[Si](C)(C)C[Si](C)(C)C GYIODRUWWNNGPI-UHFFFAOYSA-N 0.000 claims description 8
- HMDDXIMCDZRSNE-UHFFFAOYSA-N [C].[Si] Chemical compound [C].[Si] HMDDXIMCDZRSNE-UHFFFAOYSA-N 0.000 claims description 6
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 238000005984 hydrogenation reaction Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 2
- YCONLAVBSLDAFW-UHFFFAOYSA-N [Si]=O.[C].[Si] Chemical compound [Si]=O.[C].[Si] YCONLAVBSLDAFW-UHFFFAOYSA-N 0.000 claims 1
- 238000005234 chemical deposition Methods 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 17
- 239000007921 spray Substances 0.000 abstract 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 13
- 238000004380 ashing Methods 0.000 description 9
- 238000009832 plasma treatment Methods 0.000 description 6
- 238000002347 injection Methods 0.000 description 5
- 239000007924 injection Substances 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000004575 stone Substances 0.000 description 4
- 230000008021 deposition Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- ADKPKEZZYOUGBZ-UHFFFAOYSA-N [C].[O].[Si] Chemical compound [C].[O].[Si] ADKPKEZZYOUGBZ-UHFFFAOYSA-N 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000004907 flux Effects 0.000 description 2
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 230000003071 parasitic effect Effects 0.000 description 2
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 description 1
- 241000282994 Cervidae Species 0.000 description 1
- 206010034972 Photosensitivity reaction Diseases 0.000 description 1
- 101150052863 THY1 gene Proteins 0.000 description 1
- QONBJECARKIWTR-UHFFFAOYSA-N [C].[O].[Si].[Si] Chemical compound [C].[O].[Si].[Si] QONBJECARKIWTR-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000005352 clarification Methods 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- KCWYOFZQRFCIIE-UHFFFAOYSA-N ethylsilane Chemical compound CC[SiH3] KCWYOFZQRFCIIE-UHFFFAOYSA-N 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 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
- 125000001183 hydrocarbyl group Chemical class 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- UIUXUFNYAYAMOE-UHFFFAOYSA-N methylsilane Chemical compound [SiH3]C UIUXUFNYAYAMOE-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 229910052704 radon Inorganic materials 0.000 description 1
- SYUHGPGVQRZVTB-UHFFFAOYSA-N radon atom Chemical compound [Rn] SYUHGPGVQRZVTB-UHFFFAOYSA-N 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- CZDYPVPMEAXLPK-UHFFFAOYSA-N tetramethylsilane Chemical compound C[Si](C)(C)C CZDYPVPMEAXLPK-UHFFFAOYSA-N 0.000 description 1
- 238000000427 thin-film deposition Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
Classifications
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- 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
- H01L21/20—Deposition of semiconductor materials on a substrate, e.g. epitaxial growth solid phase epitaxy
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45563—Gas nozzles
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- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/22—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the deposition of inorganic material, other than metallic material
- C23C16/30—Deposition of compounds, mixtures or solid solutions, e.g. borides, carbides, nitrides
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/455—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating characterised by the method used for introducing gases into reaction chamber or for modifying gas flows in reaction chamber
- C23C16/45587—Mechanical means for changing the gas flow
- C23C16/45589—Movable means, e.g. fans
-
- 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
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C16/00—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes
- C23C16/44—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating
- C23C16/50—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges
- C23C16/505—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges
- C23C16/509—Chemical coating by decomposition of gaseous compounds, without leaving reaction products of surface material in the coating, i.e. chemical vapour deposition [CVD] processes characterised by the method of coating using electric discharges using radio frequency discharges using internal electrodes
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Inorganic Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Chemical Vapour Deposition (AREA)
- Formation Of Insulating Films (AREA)
Description
556268 ^__案號91119835_年月日 修正 ___ 五、發明說明(1) 【發明領域】 本發明係為一種製造氫化氧碳矽(H: Si 0C)薄膜之電II 增強式化學氣相沉積(plasma enhanced chemical VapQI^ deposition,PECVD )設備及其方法,特別是一種製造低 介電常數,可於製程中(如氧灰化(Oxygen ashing))達到 最少碳流失的設備及其方法。 【發明背景】 由於電路結構日趨細微化,引領半導體元件整合 0日]蹲 勢,以致於電路板上金屬配線的水平間距(p i t ch )亦需跟 進’然而,當金屬配線的水平間距減小,其間的寄生電办 (P a r a s i t i c C a p a c i t a n c e )將導致配線之間發生串音干捧 現象(C r 〇 s s t a 1 k ),在此狀況下,透過此金屬配線傳導^ 電氣訊號將受到不良影響或者傳導速率因而降低,為了 & 善此狀況,金屬配線之間的寄生電容必須減少,因而需 具有低介電常數的絕緣層來擔當重任。 % 在絕緣層的種類中,氧碳矽(S i 0C )薄膜是藉由在傳 二氧化石夕(S i 0 2 )薄膜中保留多量的碳原子,利用化學氣冲目 沉積(C V D )形成;於化學氣相沉積的過程中,參與反鹿的 可以是石夕院(methylsilance)、二曱基石夕烧(di-
Methylsilance)、三甲基石夕烧(tri- Methylsilance)以及 四甲基石夕烧(tetra- Methylsilance)。 在氧碳矽薄膜中,碳以碳氫結構(CHn )的形式懸突於 一氧化石夕的網狀結構上,其中該懸突結構會構成奈米尺兮 的氣孔,該氣孔會降低此薄膜的介電常數,除此之外, ,對 於矽烷鍵結(Si-CH3)之離子可極化程度(Ionlc
556268 -^^Ul9835 五 Pc 、發明說明(2) ----——一^^ )1 a r i z a b i 1 i 十 v w T ,, ,, 機 程 ;直 中 lty)較矽氧鍵結(Si—〇)键鍺小的推淪,上述 制亚無法提出澄清。 u y 曰=:f氣碳矽(Si0C)的薄膜中,因為耗氧的灰化製 ί π β话示經過乾蝕刻製程、濕蝕刻製程或者是離子佈 ^ 化的感光溶液,然而碳原孑會在此灰化的製程 流失,導致薄Μ ^ α 寻膜的特性逐漸衰退。 發明目的及概述】 ^ 5 t於此’本發明乃為解決上述問題而提出一種製造 虱化氧碳矽薄膜之電漿增強式化學氣相沉積設備及其方 法’主要的目的在於提供一種製造氫化氧碳矽薄膜的方 法其可以使碳在氧灰化製程中的流失滅到最小:本發明 的另 目的係提供一電漿增強式化學氣相沉積(p 1 a s m a anced chemical vapor depositi〇n ’ PECVD )設備用 以製造W述氧碳矽(SiOC)薄膜。 所以為達上述目的,本發明所提之’種製造氣化氧碳 石夕薄膜之電漿增強式化學氣相沉積設儀’包含:一反應室 ,複數個支撐座内置於該反應室内,旅且每個支撐座對應 一石夕晶圓固定於其上;一加熱裝置供給該支撐座熱量;一 電源供應單元設置於該反應室外;一電漿電極自電源供鹿 單元接收射頻(r F p〇w e r ),用以產生並維拄 心 婿今I· ^ ^ ^ 卜付反應至内的雷 水3里,一旋轉喷灑裝置於該反應室内 」电 甘目女工, 义平方式旋辕, ,、具有兩個噴氣元件用以供給該反應室内所㊉氣㉛ 得 該旋轉噴灑裝置包含一圓筒垂直結合二5二二 壁;該圓筒具有兩道沿著該圓筒内圓周的俨^愿至之上 該環型溝槽分別連接到兩個貫穿該環形 I ^ ’並且 __ 屏槽邊壁的進氣導
第7頁 556268 _案號 91119835 年 月 曰 修正 、發明說明(3) •,一旋轉桿垂直設置於該反應室内,其嵌於圓筒内 貼圓筒内壁進行旋轉運動,此旋轉桿具有兩個平行於总^ 方向並與該環形溝槽連接的供氣管,以及兩個水平方Z長 分別與該供氣管連接的管狀喷氣元件,其位置在旋^ ’ 入反應室的-㈤,透過旋轉桿旋轉而呈現水平方 :: 運動,該噴氣元件於下半部具有複數個氣體噴孔。疋轉 此兩喷氣元件的較佳實施方式是當彼此相對並以 桿中心為軸進行旋轉。 疋轉 五 孔 其較佳的實施方式 1〜lOOrpm的轉速運 氧氣也可當作攜氧工作流體使用, 是於沉積薄膜的製程中,該喷氣元件以 作。 另外/本發明所提之一種製造氫化氧碳矽薄膜之方 包含下列步驟:透過一供氣管引入雙三曱基矽曱燒( bis-trimethylsiiylmethane,BTMSM )以及攜氧工作流體 於矽晶圓上,此矽晶圓内置於該反應室中,同時或輪"序肢的 ,過另一供^管供給氫氣到矽晶圓上,於此供氣用二產生 氣電聚的狀悲下,施加的射頻功率範圍介於丨〇 〇界到2 〇 〇㈣ 之間 ° 有關本發明之詳細内容及技術,茲就配合圖式說明如 【發明實施例詳細說明】 本發明係為一種製造氫化氧碳矽薄膜之電漿增強 干氣相沉積設備及其方法。 以下將利用實施例說明本發明之具體可行性:「第1 圖」到「第5圖」係揭露一 pECVD裝置,係本發明用以製造 556268 __tl虎91119835_年月日 絛正 五、發明說明(4) 一氫化氧碳矽薄膜,其中第3圖到第5圖更詳細揭露一旋轉 喷灑裝置。如「第1圖」所示,於一反應室丨〇中,設置用 以排氣之一排氣口 2 0,以及水平設置一支撐座架設單元i丄 :其複數個支撐座1 3設置於該支撐座架設單元1 1上,並且 每一個矽晶圓1 4分別固定於每一個支撐座1 3之上。 如「第2圖」所示,承接「第1圖」中該支撐座13與該 支撐座架設單元11、該矽晶圓1 4的相對位置關係,該支撐 座架設單元1 1具有至少一通孔1 6用以聯繫該排氣口 2 〇 ;該 反應至1 0的上部具有一圓筒4 0、一旋轉桿3 0以及由一喷氣 元件1 8 a與另一噴氣元件1 8 b組成之噴灑設備。 於該設備的運作過程中,當該喷氣元件1 8 3以及該喷 氣元件1⑽於旋轉時,氣體被導入反應室1 〇内之矽晶圓1 4 上,可視狀況藉由該支撐座架設單元丨丨的水平方向旋轉取 代喷氣兀件1 8a以及1 8b旋轉,除此之外,需視製程狀況調 整該二個喷氣元件18a與18b以及該支撐座13的距離,於是 該支撐座架设早元1 1盘兮始爐娱q η卩n .. 一 1供δ亥誕轉枰d 0即可分別用以調整該兩 個貧氣元件18:以及} 8 b與該支撐座架設單元“的位置。 ,1 9= I ί做:兄:的標號1 2代表—矽晶圓載入裝置1 2,標 熱器,其形狀為-同心圓結構,設置於該 支撐座架没早兀11中· 土祖一, ^ φ 甘T,圖中未揭不位於反應室1 〇上部之一 電漿電極’其接收射并音;、玄,田、7方 電漿含量。 耵頻功率用以產生並維持反應室1 0内的 ;首先圓㈣於其内/二揭示該旋轉侧 直柱狀突起結構結㈤,並且可視為- 口於该反應至1 0之頂端,於該圓筒7
556268 _案號 91119835_年月日_i±i-_ 五、發明說明(5) 形成一螺絲孔4 7,此外,圓筒4 0下部包含一氣密管結構4 6 緊連接於該反應室1 0,其用以防止該反應室1 0發生滲透。 沿著圓筒4 0的内圓周形成二道環形溝槽4 4,另外,圓 筒4 0的邊壁形成兩個進氣導孔4 3分別連接該兩道環形溝槽 44,用以貫穿該圓筒40的邊壁,於「第4圖」中將做更詳 盡的闡述。 旋轉桿3 0位於反應室1 0内,其内嵌於該圓筒中;為了 調整該旋轉桿3 0***反應室1 0的深度,於***端設置一定 位裝置2 6。
旋轉桿3 0内的管長方向形成兩個供氣管3 2,此兩個供 氣管3 2的一端皆連接環形溝槽4 4,該旋轉桿3 0緊貼該圓筒 4 0内壁旋轉,一軸承裝置4 8用以輔助旋轉桿3 0進行旋轉運 動,除此之外,該圓筒4 0内一磁通裝置4 5用以維持該旋轉 桿3 0以及該圓筒4 0之連接關係;又圖中未說明之一冷卻水 管亦可以内嵌於圓筒4 0的管壁中,用以降低旋轉桿3 0運作 時因為摩擦所產生的熱。
管狀的該喷氣元件1 8 a及1 8 b與該供氣管3 2連接於該旋 轉桿3 0***反應室1 0的一端,其中該喷氣元件1 8 a及1 8 b與 該供氣管32的方向呈垂直,該喷氣元件18a及18b藉由該供 氣管3 2的旋轉動作呈現一水平方向的旋轉運動,其中該喷 氣元件1 8 a及1 8 b於其下部具有複數個進氣體喷孔1 7。 當氣體分別由該兩個進氣導孔4 3引入,氣體依序通過 該環形溝槽4 4以及該供氣管3 2,最後透過該喷氣元件1 8 a 及1 8b注入該反應室1 0,儘管該旋轉桿3 0持續旋轉,該環 形溝槽44與該供氣管3 2呈現連接狀態,且其氣體的供應亦
第10頁 556268 -MM 91119835___年月 日 修正 _ 五、發明說明(6) 不受旋轉桿3 0運作的影響。 當使用P E C V D裝置沉積具有低介電常數性質之氧碳矽 (S i 0 C )薄膜時,該矽晶圓1 4係固定於該支撐座1 3上,透過 其中一個進氣導孔43引入雙三曱基矽甲烷(bis- trimethylsilylmethane,BTMSM )氣體以及氧氣,氫氣則 由另一個進氣導孔4 3引入,此時旋轉桿3 0的轉速為1〜 1 0 0 r pm 〇 氣體供應的流向係精由該進氣導孔4 3透過其相對應之 該環形溝槽4 4導入該供氣管3 2中,該供氣管3 2再透過該喷 氣元件1 8a以及1 8b上之複數個氣體喷孔1 7將氣體送至該反 應室1 0中,於此氣體將均勻的佈散於反應室1 〇中,致使該 矽晶圓1 4上的薄膜成長能夠一致。為了讓氣體更均勻佈散 於反應室中,其較佳實施方式是當喷氣元件1 8a以及丨8b彼 此相對並以旋轉桿中心為轴進行旋轉。 為了於該矽晶圓1 4表面執行一化學反應,該矽晶圓1 4 之加熱範圍介於2 5°C到4 0 (TC,該反應室1 0之壓力需介於 0 · 1 T 〇 r r到1 T 〇 r r,施加的射頻功率(R F ρ 〇 w e r )則介於1 0 0 W 到2 0 0 0 W,且薄膜係形成於該矽晶圓1 4上;當氫電漿形成 時,薄膜的製程將隨雙三甲基矽甲烷(b i s -trimethylsilylmethane,BTMSM )的分解而加快反應 〇 因為雙三曱基矽甲烷(bis-trimethylsilylmethane,BTMSM )係為石夕以及碳的來源, 當雙三曱基石夕甲说(bis-1:rime1:hylsilyliiiethane,BTMSM )與氧引入時,薄膜開始形成,過程中當氫氣開始參與反
第11頁 556268 -號9111Q835_年月日 色 五、發明說明·(7) ~- 應時’ S i - C鍵結遂轉化成S i - C -職結,該氫化氧碳石夕薄膜 隨之生成,如上所述,當碳原子以及氫原子形成c — H鍵於、 時’能於接下來氧灰化製程後將碳的流失減到最低,其氣 體施放流程係可以歸納為:先將雙三甲基矽曱燒(b丨$ / trimethylsi iylmethane,BTMSM )蒸氣與氧引入用以製成 氧石反石夕(S i 〇 C )薄膜’之後施以氫電漿用以提供氫原子於古歹 薄膜上。 「苐6圖」係揭露一雙三甲基石夕甲:):完(bis-trimethylsilylmethane,BTMSM )之分子結構,其化學分 子式為Si2(CH2) (C3H9)2,不像傳統氧碳矽(Si〇C)的沉積 來源如 methylsilane、d i me thy 1 s i 1 ane " trimethylsi lan e 及 tetramethylsi lane j 其碳原子(CH2) 係介於兩個石夕原子之間,當碳原子於結構中與兩個石夕原子 結合時,其鍵結強度自然會強於其他只與一個矽結合的碳 原子,依此比較前述其他來源可得雙三曱基矽甲烷(b i s _ trimethylsilylmethane,BTMSM )分子結構中石夕與碳的鍵 結是較穩定的,亦即氧碳矽(S i 0C )薄膜可以在相同的製程 中保留大量的碳,使之於後續的製程中得以保持該氧碳矽 (Si 0C)薄膜的特性。 另一個使用雙三曱基矽甲烷(bis-trimethylsilylniethane,BTMSM )的優點是容易處理,因 為雙三曱基石夕甲烧(bis-trimethylsilylmethane,BTMSM )的沸點為1 3 2°C ,凝固點-7 1°C ,於常溫下呈現液態,而 且其不可燃、不具毒性,並且其與空氣很難發生反應。 雙三甲基矽曱烷(bis-
第12頁 556268 _案號 9Π19835_年月日__ 五、發明說明(8) ’ triniethylsilylnie1:hane,BTMSM)被存放於一自動恆溫氣泡 收集器中以維持固定蒸氣壓,並且其藉由一攜行氣體 (Carrier gas),如氬氣以及氦氣,與氧同時注入該進氣 孔43,其中該攜行氣體的流量係介於50sccm到5 0 0 sccm ,氧氣的流量係介於5 0 s c c m到lOOOsccm,於本發明所揭露 的裝置中,該氧氣的用途係用以參與氧化反應,除此之 外,其他如0 3、N 2 0以及Η 2 0 2亦有相同的效果。 第7圖到第1 0圖揭示本發明所致效用的分析圖。 參考「第7圖」,一般情形是於進行氧碳矽(Si 0C)薄 膜沉積後,其S i - C Η 3結構立即會被偵測出一峰值(P e a k), 於氧灰化反應後該峰值會消失,且其Si-CH3具有一高介電 常數值的S i 0 2 - X - Η X結構,當氫電漿沒有參與製程時,將 導致碳的脫離以至於流失。 參考「第8圖」及「第9圖」,不僅氧碳矽(Si 0C)薄膜 沉積後(a),經由氫電漿處理過(b )以及氧灰化製程後(c ) ,其S i -CH3的峰值持續存在,結果顯示經過一電漿狀態的 氫化處理後,能有效抑制碳的流失;「第8圖」係指經由 氫電漿處理(b ) 5分鐘後的效果,「第9圖」以及「第1 〇 圖」係分別指出經由氫電漿處理(b ) 1 0分鐘以及3 0分鐘後 的效果。 【達成功效】 本發明所揭露之製造氫化氧碳矽薄膜之方法,其後雖 經過如氧灰化製程,其碳的流失將被減到最低,並且因為 該喷灑裝置的旋轉運作,致使該氮化氧碳矽薄膜能均勻生 成0 、
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第14頁 556268 _案號91119835_年月曰 修正_ 圖式簡單說明 第1〜5圖係本發明所揭露之用以製造氫化氧碳矽薄膜的 PECVD設備; 第1圖係本發明所揭露PECVD設備之透視圖; 第2圖係本發明所揭露固定於支撐架上的矽晶圓; 第3圖係本發明所揭露旋轉喷灑裝置之橫截面圖; 第4圖係本發明所揭露旋轉喷灑裝置中圓筒的橫截面圖; 第5圖係本發明所揭露之旋轉桿; 第6圖係本發明所揭露雙三甲基矽甲烷(b i s -trimethylsilylniethane,BTMSM )之分子結構; 第7圖係本發明所揭露氧碳矽(Si 0C)薄膜沉積後(a)與氧灰 化製程後(c )之波長-吸收係數關係圖; 第8圖係本發明所揭露經由氫電漿處理(b ) 5分鐘後的波長-吸收係數關係圖; 第9圖係本發明所揭露經由氫電漿處理(b ) 1 0分鐘後的波 長-吸收係數關係圖;及 第1 0圖係本發明所揭露經由氫電漿處理(b ) 3 0分鐘後的波 長-吸收係數關係圖。 【圖式符號說明】 10 反應室 11 支撐座架設單元 12 矽晶圓載入裝置 13 支撐座 14 石夕晶圓 16 通孔 17 氣體喷孔
第15頁 556268 案號 91119835 年 月 曰 修正 圖式簡單說明 18a 喷氣元件 18b 喷氣元件 19 力口熱器 20 排氣口 26 定位裝置 30 旋轉桿 32 供氣管 40 圓筒 43 進氣導孔 44 環型溝槽 45 磁通裝置 46 氣密管結構 47 螺絲孑L 48 轴承裝置
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Claims (1)
- 556268 _案號91119835_年月日__ 六、申請專利範圍 1. 一種製造氳化氧碳矽薄膜之方法,係藉由一增強式電 漿輔助化學沉積設備製造,該設備包含一反應室、一 供氣單元、一排氣單元、一電源供應單元以及用以固 定一矽晶圓之一支撐座;其中該方法包含:透過一供 氣管供給雙三甲基矽曱烷( bis- trimethylsilylmethane,BTMSM )與一攜氧工作流 體於該反應室内之該矽晶圓上,輪序或同時的透過其 他該供氣管供給氫於該矽晶圓上,並於接收一射頻後 產生氫電漿,其中該射頻的功率範圍介於100W與2 0 0 0W 之間。 2. 如申請專利範圍第1項所述製造氫化氧碳矽薄膜之方 法,其中該供氣管之旋轉轉速範圍係為1 r p m〜1 0 0 r p m。 3. 如申請專利範圍第1項所述製造氫化氧碳矽薄膜之方 法,其中該矽晶圓固定於該支撐座上,透過一加熱器 加熱,其加熱範圍為2 5°C〜4 0 (TC。 4. 如申請專利範圍第1項所述製造氫化氧碳矽薄膜之方 法,其中該反應室的壓力範圍係為0. ITorr〜ITorr。 5. 如申請專利範圍第1項所述製造氫化氧碳矽薄膜之方 法,其中該攜氧工作流體可選自〇2、03、N20以及H202 之群組組合中。 6. 如申請專利範圍第1項所述製造氫化氧碳矽薄膜之方 法,其中首先供給雙三甲基矽甲烷( b i s - trimethylsilylmethane,BTMSM )與氧氣形成一氧 碳矽(S i 0C )薄膜時,接下來的流程係為透過氫電漿供第17頁 556268 _案號 91119W5_年月日_____ 六、申請專利範圍 給氫於該氧碳矽(Si 0C)薄膜上。 7· —種增強式電漿輔助化學沉積(plasma enhanced chemical vapor deposition,PECVD )設備,包含: 一反應室; 複數個支撐座,用以水平固定一矽晶圓,設置於 該反應室内; 一加熱裝置,用以供給該支撐座熱量; 一電漿電極,用以接收來自電源供應單元之射 頻,以及產生並維持該反應室内的電漿含量; 一旋轉喷灑裝置,具有兩個噴氣元件,於該反應 室内進行水平方向旋轉,並且灌注氣體於該反應 室内。 8.如申請專利範圍第7項所述增強式電漿輔助化學沉積 (plasma enhanced chemical vapor deposition , PECVD )設備,其中雙三甲基矽甲烷(bis-trimethylsilylmethane,BTMSM )與該攜氧工作流 體係透過該喷氣元件供給,攜氫工作流體係透過另一 該喷氣元件供給。 9 ·如申請專利範圍第7項所述增強式電漿輔助化學沉積 (plasma enhanced chemical vapor deposition , PECVD )設備,其中該旋轉喷灑裝置包含: 一圓筒垂直結合於該反應室上壁,其具有沿著圓 筒内圓周之兩道環形溝槽,分別連接到兩個貫穿 該環形溝槽邊壁之該進氣口;556268 _案號91119835_年月日__ 六、申請專利範圍 一旋轉桿垂直設置於該反應室内,其嵌於圓筒内 緊貼該圓筒内壁進行旋轉運動,該旋轉桿具有兩 個平行於管長方向並且與該環形溝槽連接之一供 氣管,以及兩個水平方向分別與該供氣管連接的 一管狀喷氣元件,其位置在該旋轉桿***該反應 室的一端,透過該旋轉桿的旋轉呈現水平方向旋 轉運動,該喷氣元件於下半部具有複數個氣體喷 1 0 .如申請專利範圍第9項所述增強式電漿輔助化學沉積 (plasma enhanced chemical vapor deposition , PECVD )設備,其中該喷氣元件彼此相對並以該旋轉 桿為中心。 1 1.如申請專利範圍第9項所述增強式電漿輔助化學沉積 (plasma enhanced chemical vapor deposition , PECVD )設備,其中該旋轉喷灑單元的運作轉速範圍 介於 lrpm 〜lOOrpm。第19頁
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US8119210B2 (en) | 2004-05-21 | 2012-02-21 | Applied Materials, Inc. | Formation of a silicon oxynitride layer on a high-k dielectric material |
US7645710B2 (en) | 2006-03-09 | 2010-01-12 | Applied Materials, Inc. | Method and apparatus for fabricating a high dielectric constant transistor gate using a low energy plasma system |
US7678710B2 (en) | 2006-03-09 | 2010-03-16 | Applied Materials, Inc. | Method and apparatus for fabricating a high dielectric constant transistor gate using a low energy plasma system |
US7837838B2 (en) | 2006-03-09 | 2010-11-23 | Applied Materials, Inc. | Method of fabricating a high dielectric constant transistor gate using a low energy plasma apparatus |
US7902018B2 (en) | 2006-09-26 | 2011-03-08 | Applied Materials, Inc. | Fluorine plasma treatment of high-k gate stack for defect passivation |
TWI425115B (zh) * | 2011-06-24 | 2014-02-01 | Creating Nano Technologies Inc | 電漿輔助化學氣相沈積裝置 |
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US7074461B2 (en) | 2006-07-11 |
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US6772710B2 (en) | 2004-08-10 |
US20040247799A1 (en) | 2004-12-09 |
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