TWI375329B - Body-tied, strained-channel multi-gate device and methods of manufacturing same - Google Patents

Body-tied, strained-channel multi-gate device and methods of manufacturing same Download PDF

Info

Publication number
TWI375329B
TWI375329B TW096101512A TW96101512A TWI375329B TW I375329 B TWI375329 B TW I375329B TW 096101512 A TW096101512 A TW 096101512A TW 96101512 A TW96101512 A TW 96101512A TW I375329 B TWI375329 B TW I375329B
Authority
TW
Taiwan
Prior art keywords
layer
lattice constant
substrate
semiconductor
gate
Prior art date
Application number
TW096101512A
Other languages
English (en)
Other versions
TW200805651A (en
Inventor
Hongnien Lin
Horng Chih Lin
Tiaoyuan Huang
Original Assignee
Taiwan Semiconductor Mfg
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Taiwan Semiconductor Mfg filed Critical Taiwan Semiconductor Mfg
Publication of TW200805651A publication Critical patent/TW200805651A/zh
Application granted granted Critical
Publication of TWI375329B publication Critical patent/TWI375329B/zh

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/06Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions
    • H01L29/10Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their shape; characterised by the shapes, relative sizes, or dispositions of the semiconductor regions ; characterised by the concentration or distribution of impurities within semiconductor regions with semiconductor regions connected to an electrode not carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
    • H01L29/1025Channel region of field-effect devices
    • H01L29/1029Channel region of field-effect devices of field-effect transistors
    • H01L29/1033Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure
    • H01L29/1054Channel region of field-effect devices of field-effect transistors with insulated gate, e.g. characterised by the length, the width, the geometric contour or the doping structure with a variation of the composition, e.g. channel with strained layer for increasing the mobility
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/77Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
    • H01L21/82Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
    • H01L21/822Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
    • H01L21/8232Field-effect technology
    • H01L21/8234MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
    • H01L21/8238Complementary field-effect transistors, e.g. CMOS
    • H01L21/823807Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the channel structures, e.g. channel implants, halo or pocket implants, or channel materials
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L21/00Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
    • H01L21/70Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
    • H01L21/77Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
    • H01L21/78Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
    • H01L21/82Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
    • H01L21/822Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being a semiconductor, using silicon technology
    • H01L21/8232Field-effect technology
    • H01L21/8234MIS technology, i.e. integration processes of field effect transistors of the conductor-insulator-semiconductor type
    • H01L21/8238Complementary field-effect transistors, e.g. CMOS
    • H01L21/823821Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L27/00Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
    • H01L27/02Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
    • H01L27/04Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body
    • H01L27/08Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind
    • H01L27/085Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only
    • H01L27/088Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate
    • H01L27/0886Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being a semiconductor body including only semiconductor components of a single kind including field-effect components only the components being field-effect transistors with insulated gate including transistors with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/12Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/16Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
    • H01L29/1608Silicon carbide
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/12Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/16Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
    • H01L29/161Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table including two or more of the elements provided for in group H01L29/16, e.g. alloys
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/02Semiconductor bodies ; Multistep manufacturing processes therefor
    • H01L29/12Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/16Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
    • H01L29/161Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table including two or more of the elements provided for in group H01L29/16, e.g. alloys
    • H01L29/165Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table including two or more of the elements provided for in group H01L29/16, e.g. alloys in different semiconductor regions, e.g. heterojunctions
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/66007Multistep manufacturing processes
    • H01L29/66075Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
    • H01L29/66227Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
    • H01L29/66409Unipolar field-effect transistors
    • H01L29/66477Unipolar field-effect transistors with an insulated gate, i.e. MISFET
    • H01L29/66787Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel
    • H01L29/66795Unipolar field-effect transistors with an insulated gate, i.e. MISFET with a gate at the side of the channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/7842Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/7842Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate
    • H01L29/7849Field effect transistors with field effect produced by an insulated gate means for exerting mechanical stress on the crystal lattice of the channel region, e.g. using a flexible substrate the means being provided under the channel
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/785Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET
    • H01L29/7851Field effect transistors with field effect produced by an insulated gate having a channel with a horizontal current flow in a vertical sidewall of a semiconductor body, e.g. FinFET, MuGFET with the body tied to the substrate
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L29/00Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
    • H01L29/66Types of semiconductor device ; Multistep manufacturing processes therefor
    • H01L29/68Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
    • H01L29/76Unipolar devices, e.g. field effect transistors
    • H01L29/772Field effect transistors
    • H01L29/78Field effect transistors with field effect produced by an insulated gate
    • H01L29/786Thin film transistors, i.e. transistors with a channel being at least partly a thin film
    • H01L29/78684Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys
    • H01L29/78687Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising semiconductor materials of Group IV not being silicon, or alloys including an element of the group IV, e.g. Ge, SiN alloys, SiC alloys with a multilayer structure or superlattice structure

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Insulated Gate Type Field-Effect Transistor (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Thin Film Transistor (AREA)

Description

1375329 . 九、發明說明: 【發明所屬之技術領域】 本發明是有關於-種多閘極電晶體結構,且特別是有 關於一種具有應變通道區域的多閉極電晶體結構。 【先前技術】 在半導體元件中,多間極結構是一種已知的且並應用 • 豸漸增加的結構,主要因為多閘極結構在元件中所具有的 特點,例如可量測性(scalability)、改善驅動電流以及開關 速率等。已經提出的多閘極結構元件,如雙閑極電晶體、 三閘極電晶體、Omega電晶體以及鰭式場效電晶體等,接 受程度越來越高》 /、3L的夕閘極結構是形成於絕緣層覆石夕(s〇〗)基材 上’這是因為多閘極電晶體一般會形成於高台(mesa)或島型 ⑴land)結構上。這些高台或島型結構具有較佳且高度的電 氣絕緣性以減少串音雜訊,而絕緣層覆矽(SOI)基材則可容 易地達成此一製程目的。 近來’在一場討論「超大型積體電路技術的科技論文 摘要」的研討會中’ Park等人在〇/如办U FinFETs (Omega MOSFETs) Using Bulk Si Wafers, 200Γ-文中 &出所s胃的基體聯結(body-tied)型多閘極結構。Park 等人揭路了 一種形成於塊石夕(bulk silicon)上的多閘極結 構°塊石夕製程相較於比較昂貴的絕緣層覆矽製程,其優點 '7尤是成本上的節省。此外,聯結電晶體本體到塊矽上也提 5 1375329 供較好的散熱以及接地效果,因此,有 ' 负助於雜訊的抑制。 雖然現有的兀件已經適度的改善了 j卞曲型電晶體的 失。然而,仍然需要尋求在元件效能上 、 尺進—步的提升改 善’本發明即揭露了這樣的提升改善。 【發明内容】 本發明提供了-種韓式場效電晶體,該電晶體包含有 鲁 -半導體基材以及一半導體鋒片。半導體基材具有一第一 晶格常數;半導體鰭片係由半導體基材延伸而出,並具有 -第二晶格常數’第二晶格常數並相異於第—晶格常數。 半導體鰭片更具有一頂面與兩側壁面。該電晶體更包含有 -閘極介電層與-閘極電極’閘極介電層覆蓋於該頂面與 兩側壁面的至少一部份,閘極電極覆蓋於閘極介電層的= 一部份。 本發明提供了一種積體電路,該積體電路包含一半導 _ 體基材與一絕緣層。半導體基材具有一上表面該上表面 .具有第一晶格常數。絕緣層係設於該半導體基材的上表面 上。複數島體(Islands)’該些島體係由該半導體基材的上表 面延伸而出,並具有一第二晶格常數’該第二晶格常數係 相異於該第一晶格常數,該些島體並延伸超過該絕緣層的 上表面。該積體電路更包含至少一多閘極場效電晶體元 件,多閘極元件包含有一閘極介電層與一閘極電極,閘極 ;|電層係設於該些島體的至少一部份上;閘極電極係設於 該閑極介電層上。 6 1375329 ^本發明提供了一種電晶體的製造方法,該方法包含有 提供基材,基材具有一上表面,上表面並具有一第一晶 格承數,上表面上並形成設有一絕緣層。絕緣層上形成設 有一開Π以暴露-部份的上表面。再以蟲晶方式於開口中 的上表面上成長一延伸體。&伸體具有帛二晶格常數,第 二晶格常數並相異於第—晶格常數。該方法進-步包含有 在延伸體上形成—摻雜區,在延伸體上的至少一部份上形 成-閘極介電層’在閘極介電層上形成—閘極電極。 因此,本發明具有調整多閘極電晶體中通道的應變量 的功效,藉由下層與由該下層延伸的島體間的界面產生的 應力’達到調整通道的應變量的功效。 【實施方式】 下述的揭露,探討了本較佳實施例的製造與使用的細 節。然而,本發明提供了許多具有應用性的發明概念,這 些發明概念可以被具體實現成不同的特定内容。這些所被 討論的具體實施例僅僅只用於說明本發明特定的製造與使 用方式,並非用以限定本發明所請求保護的範圍。 請參照第U圖’第la ϋ係繪示依據本發明之基體斤 結髮具應變H式元件在製程中的中間結構1管這些實: 例是用於說㈣式場效電晶體,對於熟習此項技藝的人 士’應可認知本發明同樣也可以被應用於其他多閘: 上。在第U圖所繪示的步驟中,-氡化物層4與一氮化物 層6形成於-基材2上’其中,氮化物層6係形成於氡化 j 7 1375329 物層4的上方。於實施例中,該基材2是一現有的塊矽晶 圓(bulk silicon wafer) 〇 較佳的,該氧化物層4可使用化學氣相沉積(CVD)、熱 氧化法(thema! oxidation)或是其他現有的氧化物沉積方法 形成。該氧化物層4的厚度可為至少5〇埃(人,angstr〇m), 而更較佳的,厚度界於約i〇〇埃到約3〇〇埃範圍之間。 該氮.化物層6可使用現有的沉積方法形成,如化學氣 相沉積、電漿辅助化學氣相沉積(PECVD)以及類似的方 法。在實施例中’該氧化物層4與該氮化物層6兩者合起 來的厚度可於約500埃到約1000埃之間的範圍,依照實際 需求的鰭片高度來決定兩者合起來的厚度。在該氧化物層4 的厚度界於約10G埃到約則埃之間的實施例中,該氮化 物層6的厚度將界於約埃到約·埃之間(用於高度遍 埃的籍片)以及約700埃到約900埃之間(用於高度1〇〇〇埃 的鰭片)。 如第la圖中所繪示,使用現有微影製程中的一光阻層 (圖中未示)對該氧化物層4與該氮化物層6進行圖案化 ⑽ed)程序。該氧化物層4係使用非等向性㈣她ο—) 餘刻’如電魏刻。隨後,錢化物層6係使㈣等向性 钱刻’如現有的乾㈣技術。該氧化物層4與該氮化物層6 的圖案化與㈣程序會形成—溝渠⑽neh)8,並使位於下層 的基材2上表面暴露出來…簡要說明起見,圖中僅; 示出-個溝渠8’對於熟習此項技㈣人士應可認之在現有 的晶圓上所製作的積體電路中,包含有複數個(事實上為百 8 1375329 萬個以上)這類溝渠。 如第lb圖所示,接著,將矽鍺(SiGe)M料以磊晶成長 (epitaxially grown)方式形成於基材2暴露的表面上,並填 充滿溝渠8 這些以磊晶成長方式形成的矽鍺(SiGe)材料將 會於最後的鰭式場效電晶體中形成鰭片1〇,詳細如以下揭 露所述。對於熟習此項技藝的人士而言,使用各種不同的 方法與製程來形成以磊晶成長方式成長的矽鍺鰭片1〇,將 會是容易的並且是設計上的選擇事項。例如,典型的矽鍺 合金形成方法,可在溫度攝氏5〇〇到7〇〇度之間,壓力約 為10到200托爾(torrs)的條件下,藉由流量約20標準立方 公分(seem)的二氣矽烷(SiH2Ci2)、5〇到15〇sccm的百分之 一氫稀釋鍺(GeH4)分解(decomp〇siti〇n)反應形成。較佳的, 鰭片可被成長到高度約為5〇〇埃到1〇〇〇埃之間,而這 也是為何絲化物層4與職化㈣6兩者合起來較佳的 厚度可於約5〇〇埃到約1〇〇〇埃範圍之間的理由。在圖示 中’鰭>1 10的尚度被成長到實質上與該氣化物層6頂面相 同的同一平面。在其他實施例中,鰭片10的高度可被成長 :些,高於該氮化物層6的頂面,在此一狀況下,必須注 思此日日膜成長不要朝側向延伸到該氮化物層6頂面的上 方。在其他另外的實施例中,鯖片1G晶膜可成長到直到到 達溝尔8的頂部前停止。這些都是可藉由一般實驗所建立 的設計選擇。 在石夕鍺_片1〇與基材2相接的界面發生了晶體晶格 不匹配的情形。此一晶格不匹配造成了應力而使鰭片1〇產 9 U/5329 生應變。同時,此一晶格不匹配也會使基材2產生應變, 仁這個應邊對本發明實施例的目的而言,顯得還不具重大 意義。正如此一技術領域中所已知的,應力改善了在結晶 半導體元件中的電荷載子移動率(Charge mobihty)。尤其是,矽鍺鰭片1〇與基材2之間的晶格不匹 配’其結果便是在於矽鍺鰭# 1〇的雙軸向壓縮應變 (b卜axia! CGmpressive strain)。壓縮應變改善了 ρ型元件中 的電洞移動率⑽㈣咖价相較於現有技術這種在石夕 鰭片:對工程應變的能力’提供了一項具有意義的特點。 月,’、、、第lc圖所不,可藉由乾蝕刻或溼蝕刻除去該氮 化物層6°而此—特㈣姓刻化學性質與製程是-種設計上 的選擇。隸刻製程的主要限制,便是在於氣切相對於 Z層的氧切層4具有較高的製程選擇性。在除去該氮化 物層6的過程中,必須確保氧切層4不會受到—點侵餘。 舉例來說,可使用濕㈣,溫度在攝氏約㈣12〇度之間, 利用磷鹽邮抓)去除該氮化物層6。在去除該氮化物層 '’使侍鰭片10的頂面與部分側壁面會暴露出來。在這 固階段中,可簡合適的雜f植人(1师丨她㈣片Μ中。 舉例來說’可以將?型雜質或η型雜質摻雜人鰭片10中, ^到所㈣正常雜f濃度。另外_種方式,可在韓片ι〇 :膜成長的過程中,藉由在鰭片1G原位置加人合適的雜質 來摻㈣片1G。,倾可於源極以及祕區域植人雜質,這 種做法如可使用現有已知的方式。 請參照第lc圖所示’在鰭片ι〇暴露的表面上形成設 10 1375329 有一犧牲層(或是矽彼蓋層)12,較佳的,犧牲層i2是使用 磊晶成長(epitaxially growth)方式形成。因A石曰 巧站日a成長的石夕 將會形成於續片1〇暴露的表面上,但是不會在氧化物層4 暴露的表面上,多矽(p〇lysilicon)彼蓋層12的磊晶成長可 以自行對準。在這個實施例中’需要10到2。埃的曰閘極: 化層’犧牲層12可被成長到約5到10埃。
請參照第id圖所示,藉由將犧牲層12暴露於一氧化 環境(如蒸汽環境)中,可將犧牲層12轉換為一氧化矽層 14。犧牲層12結合氧後形成氧化矽層14(氧化矽層有時將 會被參照為閘極介電層14),氧化矽層M可在後續完成的 鰭式場效電晶體中,扮演閘極介電材f。犧牲層12=_個 特點’便S防切㈣片1G受到氧化。碎鍺㈣1〇的氧 化會造成㈣H)中鍺原子的重新分配,這種情形是不希望 發生的。同時’在閘極介電材質中也不希望有鍺雜質存在。
請參照第le圖所示,-閘極電極16被形成於問極介 電層14上方並覆蓋於該氧化物層4。在此一實施例中,閘 極電極16包含有多晶物。iysiH_),並可在沉積原位被 摻雜’或是在沉積原位不被摻雜並於後續再以離子植入或 其他已知製程進行摻雜。 在另一個實施例中,間極介電層14可由高介電常數 (highk)材料形成’而不是二氧切。可被應用的材料如氧 化給(Hf〇2)、石夕酸給(腦〇),如給、㉟、錯鋼以及類似 金屬的金屬氧化物或金屬矽酸鹽(metal siHcates)。 相同的,在另一個實施例中,尤其當使用高介電常數 11 ㈣時’ _電極16可使用金屬形成以代替多晶碎。兑中 Z種範例說明性質的金収Tac,M,其他可被應用的 材料包含金屬以丁㈣心等卜金屬合心金屬氮化物 (TaN,TlN,M〇2N等)、金屬碳化物⑽等)以及可導電的金 屬氧化物(Ru〇2等)及類似物等。 =參照第2a圖到第2f圖所示,係繪示另—個範例說 月性貝的實施例。在此一實施例中,基材2包含了 3個次 :件(如第2a圖所示第一次元件是一矽晶圓“典型上為 :現有P型塊矽晶圓),矽晶圓U形成有'缓衝層3(第二 Μ件),而緩衝層3上形成有一鬆他石夕錯層㈣⑽咖 啊)5(第三次元件)。該鬆㈣鍺層5具有也許10到3〇百 濃度。緩衝層3,如其名稱所隱含的意義,扮演了 "廄 善石夕晶圓1與鬆他石夕錯層5之間晶格不匹 =效應的角色' 緩衝層3可藉由兩個手段來達到此一目的。 nr衝層:與”圓1的界面具有本質上為零的錯 生^格不I錢衝層3㈣晶圓1之間,基本上不會發 錯二的情形。第二,緩衝層3的錯濃度與㈣ 声3中的鍺濃二甘 晶格不匹配的情形。緩衝 變化的優點,L漸地增加。藉由這種濃度梯度 與響…匕/'可錯或至少實質減少晶格不匹配的 =配的影響錯層5即不會受到與石夕晶圓1間晶格 12 1375329 在此-實施例中,緩衝層3是足夠厚以使得發生在緩 衝層3與鬆他石夕鍺層5間界面的差排Wag)無法移動 完全穿過該層。緩衝層3的厚度在約為测埃至埃 的範圍之間。較佳的’鬆他石夕鍺層5的厚度在約為2_埃 到3_埃的範圍之間。如第2a圖所示,最後的結構提供 了-種虛擬錢基材,虛擬料基材上可製作㈣的元件。 請參照第2b圖所示,繼續進行類似如參照第la圖所 繪不說明的方法。如同前述,形成氧化物層4與氮化物層6 並進行圖案化以形成溝渠8。在設計的考量中,在形成氧化 物層:與氮化物層6以及後續製程時,應該要考慮製程的 熱預异(thermal budget)。這是因為當超過製程的熱預算 時,其結果可能會降低鬆他石夕錯層5的設計特性,在一些 案财’這些設計特性包含在鬆弛補層5與㈣片2〇間 應力發展的鬆他(請參照第2c圖並將在下段討論)。較佳 的,製程溫度保持不超過由約攝氏7〇〇度到_度的範圍 2間可轉持-個滿㈣熱預算。在此實施财,暴露於 溝渠8底部的基材是鬆他石夕鍺層5。為了簡單說明起見,在 第2d圖以及隨後的圖t,並未將矽晶圓】繪示出來。 至請參照第2〇圖,鰭片2〇是以蟲晶成長方式形成於溝 ^底部之暴露於的基材(謂層5)上並填滿溝渠8。在此 實施例中’其中’位於下層(層5)是石夕錯層,韓片2〇包含 =°藉此,在補片2G與石夕錯層5間的界面可再度建立一 朗格不匹配關係。因為矽鍺相較於矽具有較大的晶格常 數’使得料片2G上會產生—雙轴向張力應變。張力應變 13 丄 n型電晶體的電子載子移動率,所以本較佳實 施例特別適合於η型電晶體。 给-報al帛Μ圖所不’繼續進行類似如參照第1C圖所 二二:製程,即去除氮化物層6。4 了簡單說明起見, 、言個膏二Μ隨後的圖中’並未將緩衝層3繪示出來。在 ^ 鰭片2〇上並不需要製作矽犧牲層。請參照 第二圖所示,閘極介電層14可直接被形成於料片2〇上, ^藉由熱成長方式將閘極介電層_成於料片⑼暴 、面上董十於热習此項技藝的人士而言,應該可以認 知閘極介電層14 & 成長的1程中,會消耗一部分的矽鰭片 2〇。關於此點,可藉由轄片20在高度與厚度表面上的設計, 提=償料片20因形成閘極電極14所造成的消耗。 八^ ’、?、第2f圖所不,最後將閘極電極16形成於開極 W電層14上方並覆蓋於該氧化物層4。如同前述參照第k 圖所作的說明’閘極電極16可包含多晶矽,或是在另一個 實施方式中’包含金屬、合金以及導電的氮化物或氧化物。 相同的如同則述參照第j e圖所作的說明,間極介電層14 可由高介電常數(highk)材料形成。可被應用的材料二 給(Hf〇2)、矽酸給(HfSi〇)或其他已知的替代物。 清參照第3a圖到第3f圖所示,係繪示另一個範例說 明性質的實施例。如第3a圖所示,基材2包含有一石夕晶圓 1、一緩衝層9以及一鬆弛碳化矽(relaxed以〇層U。在這 個例子令’缓衝層9具有—碳濃度,碳滚度由接近底端(在 與矽晶圓1的界面)為零’變化至與鬆弛碳化矽層u的碳 14 1375329 濃度相同(在與鬆弛碳化矽層11的界面)。 β參照第3b圖所示,可使用前述的製程將氧化物層4 與氮化物層6係形成於碳化矽層丨丨上。接著,使用前述的 製程將氧化物層4與氮化物層6圖案化以形成溝渠&在這 個實軛例中,溝渠8會將位於下層的碳化矽層11暴露出 來。請參照第3c圖所示,如同前述參照第2c圖時所述, 以磊晶成長方式將矽填滿溝渠8以形成鰭片2〇。在這個實 施例中,鰭片20是被成長於位於下層的碳化石夕層1丨上。 已知碳化矽具有較矽小的晶格常數,亦即,在碳化矽層u 與矽鰭片20的界面會產生一雙軸向的壓縮應力,其作用結 果便是鰭片20中的壓縮應變(c〇mpressive strain)。此種壓 縮應變增強了電洞移動率,因此,對於製作p型金屬氧化 .半導體場效電晶體(MOSFET)時特別有益處。 請參照第3d圖所示,當去除氮化物層6後,會將矽鰭 片20與位於下層的氧化物層4暴露出來。接著,將矽鰭片 20暴露於一氧化環境中,部分的矽鰭片2〇(包含一部份的 上表面與側壁面)會氧化成氧化矽。請參照第3e圖所示, 此一目的便是為了製作閘極介電層14。請參照第3f圖所 示,閘極介電層14上方沉積設有多晶矽閘極電極16。如同 前述的實施例中所述,閘極介電層14可選擇使用高介電常 數材料,而閘極電極16可選擇包含金屬、金屬合金、金屬 氮化物及金屬氧化物等。 應用前述的材料與製程,預期可達到的區域化應變, 將在500(Mpa)到l〇〇〇(Mpa)範圍之間。然而,鰭片1〇、2〇 15 1375329 最大應變’如同―個潛在的設計限制,應會被認知發生 在…、下層(如層2、層5或層⑴的界面位置,而越遠離界 面位置,應變量越小。第7圖中繪示了此-現象,第7圖 系會不第le圖中&件的部分放大圖。第7圖繪示了鰭片 1片1〇上並加上應變線25。這些應變線25繪示了應 變線門相對的應變里大小的示意I線條較密集的區域(即 線條間距小)纟h 了兩應變區域,線純疏散的區域(即線條 間距大)繪示了相對較低的應《域。如同此-示意圖所繪 不’鰭片10所產生的應變大小(以及其他實施例類似的鰭 片20),在其與下層的界面為最大,並且隨著與該界面的距 離❹而穩定地減少。這種現象對籍片1〇(以及類似的轄片 )的间度產生實際上的限制,在使用目前可用的製程與 材料下’鰭片10的高度不能超過約500埃到1〇〇〇埃之間: 然而,這僅僅是目前實施例的實際限制條件。可預期的是, 本發明將可應用新發展的製程與材料,因而,此一限制條 件應當不能被考慮成限制本申請案或是本發明所教示内容 的一個限制條件。 製作基材與藉片的材料可應用不同的材料組合,依據 設計所需的鰭片應變量,可應用的基㈣片的材料W包 含 sl/siGe、siGe/si、Sic/Si、Si/Sic 以及其他組合等 些組合並不受限於上述所列的材料。事實上,也。3 族、第4族與第5族的元素加入碎晶格令以及改變 用的晶格常數。唯-的限制便是成本考量、製程簡化程度二 潛在的污染因素以及類似的因素等。 1375329 在這些實施例中,只有繪示出單一個矽鰭片1 〇、2〇。 對於熟習此項技藝的人士,將可認知在單一晶圓上(事實上 為:-積體電路中),將可能形成上百萬個以上的鰭片。如 同前述,部分的鋒片/基材組合產生壓縮應變因此,特別 有利於改善在Ρ型元件中的載子移動率;而其他的缚片/基 材組合在鰭片上產生拉伸應變,因此,特別有利於改善在η 型元件中的載子移動率。所以,當應用不同的籍片結構於 不兄電晶體型式(Ρ型、„型)的單—積體電路中時,是具有 2功效以及益處的,特別是應用於所謂的互補性氧化金屬 半導體(CMOS)製程技術中。 :參:第4a圖到第4e圖所示,係繪示一種應用於 刪π件的製造方法。第4a圖繪示了基材2 :…氮化物層6。如同前述方式,形成溝渠Η。 為了間化說明起見,圖示中僅 繪示其他如不同的井區域、絕;:冓2::冓渠。圖中並未 構、雜音隔絕環以及基 化,使i中^的特點等。經由光阻%的形成與進行圖案 使-中-第-溝渠8a被光阻3〇覆蓋,一第 被暴露出來。請參照第4b圓所示,接著以蟲晶成:方:將 石夕鍺形成㈣二轉8b底料暴露 工 並填滿第二溝…形成,…。b在此時間 點,矽鍺鳍片10b可選擇的拮λ 減時間 植入n型雜質以形成源極以及 ,㈣域(时U)。這是因為#進行㈣植人時 片1〇a尚未被形成且光阻30仍覆蓋 -· 要額外的光罩製程。 乐a’因此可不需 17 1375329 睛參照第4b圖所示,接著去除光阻3Q,再重新塗佈光 =並進行圖形化,使得第二縛片1Qb被新光阻覆蓋,而溝 Ua被曝露出來。接著以蠢晶成長方式㈣碳化物形成於 第-溝渠8a底部被暴露出來矽基材2表面上,並填滿第— 溝渠8a以形成-趙片1〇a。鰭片1Qa可植入適當的p型雜 質以形成源極以及汲極區域。此一操
仍受到光㈣保護時進行。雖然,可以選擇地調=對: 摻雜濃度以使,鰭片1()b中被摻雜入足夠多的η型雜質,如 ^,即使在進行反型摻雜後,以⑽的源極/汲極 區域仍維持η型。請參照第4e圖所示,在去除光阻3〇之 後,接著去除氮化物層4,以及形成矽坡蓋層12a、丨孔。 請參照第4d圖所示,接著將元件暴露於一氧化環境中 去,矽披蓋廣i2a、12b分別轉換為閘極氧化層14a、丨仆。 接著形成閘極電極16a、16b以及進行圖案化。在這個實施 例中,是於一個基材上形成有碳化矽鰭片與矽鍺鰭片,以 達到所需求的應變鰭片。另—種方式是,在碎或其他材料 上,形成碳化矽或是矽鍺虛擬基材以供工程應變的需求。 這二刀別選擇的,材料是設計上以及一般實驗的選擇事項。 第如圖繪示了第4d圖所示剖面結構的平面示意圖。 鰭片l〇a提供形成了—p型鰭式場效電晶體,鰭片1〇&具 有分別植入其兩端部的n型源極/汲極區域32。源極/汲極 區域32間疋義了一通道區域,同時閘極電極位於通道 區域(沿著鰭片l〇a的頂面以及側壁面)上方。同樣的鰭片 l〇b提供形成了一 n型鰭式場效電晶體,鰭片i〇b具有分別 1375329 . 楂入其兩端部的P型源極/汲極區域34。源極/汲極區域34 間定義了一通道區域,同時閘極電極16b位於通道區域(沿 著鰭片l〇b的頂面以及側壁面)上方。基於參照的觀點第 1圖、第2圖、第3圖以及第4a_4d圖係繪示沿第4e圖中 A-A剖面線的剖面圖。 明參照第5a圖到第5e圖所示,係繪示一種所謂的分 離晶圓法(split wafer approach),於CM〇s中整合p型應變 • 鰭式場效電晶體與n型應變鰭式場效電晶體的方法。第5a 圖繪示了一矽晶圓(基材)2,其具有一深溝渠36,深溝渠36 可鞛由非等向性蝕刻或是結合非等向性蝕刻與等向性蝕刻 所製作而成。深溝渠36的位置與尺寸可以利用光阻3〇來 定義。以磊晶方式可選擇的在深溝渠36内暴露的基材表面 上成長形成缓衝層3與矽鍺層5。在緩衝層3磊晶成長的過 程中,逐漸地加入鍺,使緩衝層3的鍺濃度,由零逐漸增 加到矽鍺層5中的鍺的一般濃度。接著,維持此一鍺濃度 • 持續蟲晶成長最後得到石夕鍺層5。 雖然圖示中將緩衝層3與矽鍺層5繪示為有不同(即 有區別性)的層體,但是對熟習此項技藝的人士應可清楚瞭 解,事實上,這些層體間的界面可以是不用明確界定的或 是整體不可區分的。 凊參照第5c圖中所示,第5c圖係繪示對基材2以及 矽鍺層5上的氧化物層4以及氧化物層4上的氮化物層6, 進行形成與圖案化以形成溝渠8 ^值得注意的是,部分溝渠 8曝露了基材2,而其他溝渠8則曝露了矽鍺層 1375329 . 經由適當的光罩與磊晶成長步驟,溝渠8中可以分別 形成具有不同組合物的鰭片。請參照第5d圖所示,舉例來 說,石夕鍺㈤H)可以成長於基材2上,料片2()可以成 長於石夕鍺層5上。熟習此項技藝的人士將認可前述錯片的 $成方式,可藉由遮罩部分溝渠8,在其餘暴露的溝渠8 成長矽鍺後;隨後暴露前一步驟中所遮罩的溝渠8,並遮罩 石夕鍺縛片;最後於暴露的溝渠8中成長發鰭片。請參照第 • ^圖所示’碳化矽鰭片40係被藉由圖示的方法繪示出來。 廷些碳化石夕鰭片40的形成方式,是利用當形成其他鰭片 時;’遮罩住碳切,鰭片所在的溝渠,同樣的,當於對應的 溝渠中蟲晶成長碳化石夕韓片4〇時,其他續片(即石夕錯藉片 1〇與矽鰭片20)是被遮罩住的。顯然的,第5d圖中的鰭片 W/0、4〇的位置與排列配置,僅僅為說明性質。相同的, 緩衝層3與石夕錯層5關於基材2的相對尺寸與位置,也僅 。為說月丨生質。貫際上,不同尺寸與配置關係的溝渠都有 _ 可能被應用。而且’如圖所繪示的,當石夕晶圓上形成石夕鍺 虛擬基材時,晶圓與基材材質的改變,對於熟習此項技藝 的人士來說,是屬於易見的。 為了使揭露更為完整,第5e圖繪示了第5d圖中的積 體電路’該積體電路是使用前述參照第1圖到第4圖的敘 述說明所述的製程,在去除I化物層6,並分別形成間極介 電層^4以及閘極電極16後的示意圖。 〇〇印參照第6圖所示,在本發明又另一個實施例中’一 °°積體電路同時應用基體聯結應變雜式場效電晶體以及 20 1375329 平面型電晶體(planar transistor)兩者。實施例中所述的基體 聯結應變通道多通道電晶體,其製造製程能完全與現有平 面型電晶體CMOS製程相容。在整合的示意圖中,平面型 電晶體元件44可以應用氧化物層4當成其一氧化線性層或 疋内層介電層(ILD)的至少一部份。而作為範例說明的多閘 極電晶體42,元件製作中也應用了氧化物層4。在另外一 個實施例中(圖中未示),平面型元件48可使用氧化物層4
作為其閘極氧化層。必須說明的是,為了能更清楚繪示實 施例的特點,第6圖中並未繪示出實際元件中所具有的其 他特點或元件。 本發明所揭露具有功效的實施例包含一種製造電晶谓 的方法。財法包含有提供一基#,基材具有一上表面 上表面並具有一第一晶格常數,上表面上並形成設有—名 緣層。絕緣層上形纽有—開口以暴露—部份的上表面 再以m式於開口中的上表面上成長—延伸體。延伸旁
格 有第_ aa格㊉數,第二晶格常數並相異於第叫 1。該方法進-步包含有在延伸體上形成—摻雜區,在 體上的至少—部份上形成一閑極介電層,在閑極介電 Π一閑極電極。在另-些實施例中,該方法包含有 緩衝含提供一晶圓。在晶圓上形成-緩衝層並 一半導體層,…導體層具有第-晶格 表面一絕緣層’形成方法可包含於基材的 面上…氧化物層以及於氧化物層上形成一氮化 Β。在延伸L —域,形咖可包含以離 21 幻75329 • σ 方式烙成—弟一源極/汲極區域以及一第二源極/汲極 區域在延伸體上形成__間極介電層,形成方式可包 化延伸體的-部份。在另一些實施例中,在延伸體上形成 ‘ 料閘極介電層,形成方式可包含在延伸體的—部份上 形成一半導體層以及氧化半導體層。 ” ▲雖然’上述詳細說明已經揭示了本發明及其特點,任 何熟習此技藝者,在不脫離後附之申請專利範圍所界定本 • ^明之精神和範圍内’當可作各種之更動、替代、更換與 潤飾。此外,本申請案的說明書範圍内所揭露的實施财 的方法、製程、機器、製法、組成物、手段以及㈣等等 2非用以限定本發明,任何熟習此技藝者,將可容易根據 ^明的揭*中的現有或未來發展的方法、製程、機器、 t法、組成物、手段以及步驟等等,應用這些實質上具有 t同功能’或是實質上達到相同功效的相對應實施例了因 $本發明之保護範圍當視後附之中請專利範圍所界定者為 【圖式簡單說明】 優點與實施例 為讓本發明之上述和其他目的、特徵 月b更明顯易懂,所附圖式之詳細說明如下 第1 a圖到第1 e圖係、繪示依擔士找 第一 很據本發明多閘極電晶體 較佳實施例的製造步驟示意圖。 第2a圖到第2f圖係繪示依播士拉 據本發明多閘極電晶體之 22 1375329 第二較佳實施例的製造步驟示意圖》 第3 a圖到第3 f圖係繪示依據本發明多閘極電晶體之 第三較佳實施例的製造步雜示意圖。 第4a圖到第4e圖係繪示一積體電路的一第一較佳實 施例的製造步驟示意圖’積體電路包含依據本發明電晶體 的實施例β 第5a圖到第5e圖係繪示一積體電路的一第二較佳實 施例的製造步驟示意圖,積體電路包含依據本發明電晶體 的實施例。 第6圖係繪示一積體電路的示意圖,該積體電路包含 有依據本發明的多閘極電晶體以及一平面型電晶體。 弟7圖係缯·示縛式電晶體結構,用以說明縛片上應變 的分布情形。 【主要元件符號說明】 1 :矽晶圓 14 :閘極介電層 2 :基材 14a :閘極氧化層 3 :緩衝層 14b :閘極氧化層 4 :氧化物層 16 :閘極電極 5 :鬆弛發鍺層 16a :閘極電極 6 :氮化物層 16b :閘極電極 8 :溝渠 20 :鰭片 8a :溝渠 25 :應變線 扑.溝渠 3 〇 :光阻 23 1375329 9 :缓衝層 10 :鰭片 10a :鰭片 10b :矽鍺鰭片 11 :鬆弛碳化矽層 12 :矽彼蓋層(犧牲層) 12a :矽坡蓋層 12b :矽彼蓋層 32 :源極/汲極區域 34 :源極/汲極區域 36 :深溝渠 40 :碳化矽鰭片 42 :多閘極電晶體 44 :平面型電晶體元件 48 :平面型元件 24

Claims (1)

  1. ,Jozy __ /。。年//月>Γ日修正本 100年丨丨月25日修正替換頁 十、申請專利範圍: L 一種電晶體,至少包含; 一半導體基材,具有—坌—ajA也 基材包含有: 帛〜格*數,其中該半導體 —第一半導體材料; 鲁 -緩衝層,設於該第一半導體材料上;以及 一第一半導體材料,設於該緩衝層上; 右一楚半導體1片自該第二半導體材料延伸而出,並具 勃姑由3曰格*數,該第二晶格常數相異於該第-晶格常 數’:半導體鰭片具有一頂面以及兩相對側壁面; 閘極介電層’覆蓋於該頂面以及該兩側壁面的至少 一部份上;以及 閘極電極,覆蓋於該閘極介電層的至少—部份上。 2·如申凊專利範圍第1項所述之電晶體,進-步包含 有: 第—摻雜區域,設於該半導體鰭片上鄰近該閘極 極的一第—側;以及 一第二摻雜區域,設於該半導體鰭片上鄰近該閘極電 極的一第二側。 3’如申請專利範圍第1項所述之電晶體,其中該第二 -導體材料係主要選自、siC以及SiGeC戶斤組成群組 中的一材料。 ’ 25 1375329 100年丨丨月25日修正替換頁 4.如申請專利範圍第1項所述之電晶體,其中該半導 體韓片係主要選自Si ' SiGe、SiC以及SiGeC所組成群组 中的一材料。 5_如申請專利範圍第1項所述之電晶體,其中該閘極 "電層包含有至少一氧化物層。 6.如申請專利範圍第1項所述之電晶體,其中該電晶 體為一鰭式場效電晶體(Fin-EFT Transistor)。 7· 一種積體電路,至少包含: 一半導體基材,具有一第一晶格常數的上表面; 一絕緣層,設於該半導體基材的上表面上; 複數島體,自該半導體基材的上表面延伸而出,並具 φ 有一第二晶格常數,該第二晶格常數相異於該第一晶格常 數,該些島體延伸超過該絕緣層的一上表面;以及 至少一多閘極元件,包含有: 一閘極介電層’設於該些島體的至少一部份上;以 及 一閘極電極,設於該閘極介電層上。 8.如申請專利範圍第7項所述之積體電路,其中該半 導體基材包含有: 26 1375329 100年丨丨月25曰修正替換頁 —楚 弟一材料; 一緩衝層,設於該第一材料上;以及 半導體層,設於該緩衝層上並具有該第一晶格常數。 9.如申請專利範圍第8項所述之積體電路,其中該半 導體層係主i 土要選自Si、SiGe、SiC以及SiGeC所組成群組 中的一材料。 如申請專利範圍第7項所述之積體電路,其中該 二島體係主要撰白<5. _ I選自Si、SiGe、SiC以及SiGeC所組成群組 中的—材料❶ 、 步包人有如巾請專利範圍第7項所述之積體電路,更進- 及 第 穆雜區域,設於該些島體的至少其中一 上;以 第二摻雜 上; 其中, 區域’設於該些島體的至少其中一 通道區域,該第—摻雜區域與該第二摻雜區域之間形成一 °° 。亥閑極電極設於該通道區域的至少一部份上。 第-換雜專利範圍第11項所述之積體電路,其中該 區域與該第二摻雜區域包含p型雜質 13 .如申請專利範圍帛12項所述之積體電路,進一步 27 ^/^329 100年1丨月25曰修正替換頁 I含有至少一平面型電晶體形成於基材的上表面上,該平 面型電晶體包含有: 第捧雜區域,形成於該基材的至少一部份; —第二摻雜區域,形成於該基材的至少一部份; 平面型電晶體閘極介電層,形成於該基材的上表 上;以及 & 平面型電晶體閘極電極,形成於該平面型電晶 極介電層上。 B约 ^丨4·如申請專利範圍第13項所述之積體電路,其中該 平面型電晶體閘極介電層與該平面型電晶 相同的-材料層形成。 电極係由
    15.如申睛專利範圍第 材料層係為連續的。 16.如申靖專利範圍第 包含有: 14項所述之積體電路,其中該 7項所述之積體電路,進—步 卜^有第二晶格常數的區域,形成於該半導體基材 第—晶格常數相異於該第-晶格常數; -第體’自該區域的上表面延伸而出,並具有 上:L:r晶格常數相異於第二晶格常數, :第一島體延伸超過該絕緣層的一上表面;以及 一第二多閘極元件,包含有· 28 1375329 100年丨丨月25曰修正替換頁 一第二閘極介電層,設於該些第二島體的至少一部 份上;以及 一第二閘極電極’設於第二該閘極介電層上。 17. —種半導體裝置,包含有: —含矽基材,具有一第一晶格常數; 具有一第二晶格常數之元件,自該基材的一主要表 面凸伸而出,該第二晶格常數大於該第一晶格常數; —絕緣材料’形成於該元件上;以及 —導電材料’形成於該絕緣材料上。 18. 如申請專利範圍第I?項所述之裝置,進一步包含 有一摻雜區域,橫向地對位於該元件,並延伸至少一部分 於該基材的主要表面中。 19. 如申請專利範圍第I?項所述之裝置,其中該元件 係相對於該基材的一主要結晶抽狀⑷對 位0 20· —種電晶體的製造方法,包含有: 提供一基材’其中該基材具有一第一晶格常數的上表 面’該上表面上並設有一絕緣層; 形成一開口於該絕緣層上以暴露部份的該上表面;以 及 29 1375329 100年1丨月25日修正替換頁 以磊晶方式於該開口中的上表面上形成一延伸體,使 該延伸體具有一第二晶格常數,該第二晶格常數相異於該 第一晶格常數。 21.如申請專利範圍第20項所述之電晶體的製造方 法,進一步包含有: 形成一摻雜區在該延伸體上; 形成一閘極介電層在該延伸體上的至少一部份上;以 及 形成一閘極電極在該閘極介電層上。 30
TW096101512A 2006-07-10 2007-01-15 Body-tied, strained-channel multi-gate device and methods of manufacturing same TWI375329B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/483,906 US8946811B2 (en) 2006-07-10 2006-07-10 Body-tied, strained-channel multi-gate device and methods of manufacturing same

Publications (2)

Publication Number Publication Date
TW200805651A TW200805651A (en) 2008-01-16
TWI375329B true TWI375329B (en) 2012-10-21

Family

ID=38918390

Family Applications (1)

Application Number Title Priority Date Filing Date
TW096101512A TWI375329B (en) 2006-07-10 2007-01-15 Body-tied, strained-channel multi-gate device and methods of manufacturing same

Country Status (3)

Country Link
US (4) US8946811B2 (zh)
CN (1) CN101106159B (zh)
TW (1) TWI375329B (zh)

Families Citing this family (36)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100772114B1 (ko) * 2006-09-29 2007-11-01 주식회사 하이닉스반도체 반도체 소자의 제조방법
US8217435B2 (en) 2006-12-22 2012-07-10 Intel Corporation Floating body memory cell having gates favoring different conductivity type regions
US7732859B2 (en) * 2007-07-16 2010-06-08 International Business Machines Corporation Graphene-based transistor
US20090057780A1 (en) * 2007-08-27 2009-03-05 International Business Machines Corporation Finfet structure including multiple semiconductor fin channel heights
US8106459B2 (en) 2008-05-06 2012-01-31 Taiwan Semiconductor Manufacturing Company, Ltd. FinFETs having dielectric punch-through stoppers
US8048723B2 (en) 2008-12-05 2011-11-01 Taiwan Semiconductor Manufacturing Company, Ltd. Germanium FinFETs having dielectric punch-through stoppers
US8263462B2 (en) 2008-12-31 2012-09-11 Taiwan Semiconductor Manufacturing Company, Ltd. Dielectric punch-through stoppers for forming FinFETs having dual fin heights
US8293616B2 (en) * 2009-02-24 2012-10-23 Taiwan Semiconductor Manufacturing Company, Ltd. Methods of fabrication of semiconductor devices with low capacitance
US9768305B2 (en) * 2009-05-29 2017-09-19 Taiwan Semiconductor Manufacturing Company, Ltd. Gradient ternary or quaternary multiple-gate transistor
US8937353B2 (en) 2010-03-01 2015-01-20 Taiwan Semiconductor Manufacturing Co., Ltd. Dual epitaxial process for a finFET device
US9312179B2 (en) 2010-03-17 2016-04-12 Taiwan-Semiconductor Manufacturing Co., Ltd. Method of making a finFET, and finFET formed by the method
US8207038B2 (en) 2010-05-24 2012-06-26 International Business Machines Corporation Stressed Fin-FET devices with low contact resistance
US8558279B2 (en) 2010-09-23 2013-10-15 Intel Corporation Non-planar device having uniaxially strained semiconductor body and method of making same
US9105660B2 (en) 2011-08-17 2015-08-11 United Microelectronics Corp. Fin-FET and method of forming the same
US9099388B2 (en) * 2011-10-21 2015-08-04 Taiwan Semiconductor Manufacturing Company, Ltd. III-V multi-channel FinFETs
US20130302954A1 (en) * 2012-05-10 2013-11-14 Globalfoundries Inc. Methods of forming fins for a finfet device without performing a cmp process
US8680576B2 (en) * 2012-05-16 2014-03-25 Taiwan Semiconductor Manufacturing Company, Ltd. CMOS device and method of forming the same
EP2682983B1 (en) * 2012-07-03 2016-08-31 Imec CMOS device comprising silicon and germanium and method for manufacturing thereof
CN103811324B (zh) * 2012-11-13 2016-08-31 中芯国际集成电路制造(上海)有限公司 鳍式场效应管的形成方法
EP2741320B1 (en) * 2012-12-05 2020-06-17 IMEC vzw Manufacturing method of a finfet device with dual-strained channels
US8951870B2 (en) * 2013-03-14 2015-02-10 International Business Machines Corporation Forming strained and relaxed silicon and silicon germanium fins on the same wafer
US9000498B2 (en) * 2013-06-28 2015-04-07 Stmicroelectronics, Inc. FinFET with multiple concentration percentages
CN103413758B (zh) * 2013-07-17 2017-02-08 华为技术有限公司 半导体鳍条的制作方法、FinFET器件的制作方法
US9099559B2 (en) 2013-09-16 2015-08-04 Stmicroelectronics, Inc. Method to induce strain in finFET channels from an adjacent region
US9165929B2 (en) 2013-11-25 2015-10-20 Qualcomm Incorporated Complementarily strained FinFET structure
DE102014116666B4 (de) * 2014-11-14 2022-04-21 Infineon Technologies Ag Ein Verfahren zum Bilden eines Halbleiterbauelements
US9954107B2 (en) 2015-05-05 2018-04-24 International Business Machines Corporation Strained FinFET source drain isolation
US9653580B2 (en) 2015-06-08 2017-05-16 International Business Machines Corporation Semiconductor device including strained finFET
US10026653B2 (en) 2015-12-16 2018-07-17 International Business Machines Corporation Variable gate lengths for vertical transistors
US9842929B1 (en) * 2016-06-09 2017-12-12 International Business Machines Corporation Strained silicon complementary metal oxide semiconductor including a silicon containing tensile N-type fin field effect transistor and silicon containing compressive P-type fin field effect transistor formed using a dual relaxed substrate
US9947789B1 (en) * 2016-10-17 2018-04-17 Globalfoundries Inc. Vertical transistors stressed from various directions
US10115808B2 (en) * 2016-11-29 2018-10-30 Taiwan Semiconductor Manufacturing Company, Ltd. finFET device and methods of forming
US11404575B2 (en) 2017-06-30 2022-08-02 Intel Corporation Diverse transistor channel materials enabled by thin, inverse-graded, germanium-based layer
US10672888B2 (en) 2017-08-21 2020-06-02 International Business Machines Corporation Vertical transistors having improved gate length control
US10756217B2 (en) 2018-02-15 2020-08-25 Micron Technology, Inc. Access devices formed with conductive contacts
US10784359B2 (en) * 2018-05-18 2020-09-22 Taiwan Semiconductor Manufacturing Company, Ltd. Non-conformal oxide liner and manufacturing methods thereof

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6413802B1 (en) 2000-10-23 2002-07-02 The Regents Of The University Of California Finfet transistor structures having a double gate channel extending vertically from a substrate and methods of manufacture
US20020100942A1 (en) * 2000-12-04 2002-08-01 Fitzgerald Eugene A. CMOS inverter and integrated circuits utilizing strained silicon surface channel MOSFETs
US6475869B1 (en) 2001-02-26 2002-11-05 Advanced Micro Devices, Inc. Method of forming a double gate transistor having an epitaxial silicon/germanium channel region
US6635909B2 (en) * 2002-03-19 2003-10-21 International Business Machines Corporation Strained fin FETs structure and method
US7358121B2 (en) 2002-08-23 2008-04-15 Intel Corporation Tri-gate devices and methods of fabrication
US6706571B1 (en) 2002-10-22 2004-03-16 Advanced Micro Devices, Inc. Method for forming multiple structures in a semiconductor device
US7335934B2 (en) * 2003-07-22 2008-02-26 Innovative Silicon S.A. Integrated circuit device, and method of fabricating same
US7172943B2 (en) 2003-08-13 2007-02-06 Taiwan Semiconductor Manufacturing Company, Ltd. Multiple-gate transistors formed on bulk substrates
KR100513405B1 (ko) 2003-12-16 2005-09-09 삼성전자주식회사 핀 트랜지스터의 형성 방법
KR100552058B1 (ko) * 2004-01-06 2006-02-20 삼성전자주식회사 전계 효과 트랜지스터를 갖는 반도체 소자 및 그 제조 방법
US6998684B2 (en) * 2004-03-31 2006-02-14 International Business Machines Corporation High mobility plane CMOS SOI
US7393733B2 (en) * 2004-12-01 2008-07-01 Amberwave Systems Corporation Methods of forming hybrid fin field-effect transistor structures
US7605449B2 (en) 2005-07-01 2009-10-20 Synopsys, Inc. Enhanced segmented channel MOS transistor with high-permittivity dielectric isolation material
US7807523B2 (en) 2005-07-01 2010-10-05 Synopsys, Inc. Sequential selective epitaxial growth
US7508031B2 (en) 2005-07-01 2009-03-24 Synopsys, Inc. Enhanced segmented channel MOS transistor with narrowed base regions
US7247887B2 (en) 2005-07-01 2007-07-24 Synopsys, Inc. Segmented channel MOS transistor
US7190050B2 (en) 2005-07-01 2007-03-13 Synopsys, Inc. Integrated circuit on corrugated substrate
US7265008B2 (en) 2005-07-01 2007-09-04 Synopsys, Inc. Method of IC production using corrugated substrate
US8466490B2 (en) 2005-07-01 2013-06-18 Synopsys, Inc. Enhanced segmented channel MOS transistor with multi layer regions
US20070090416A1 (en) * 2005-09-28 2007-04-26 Doyle Brian S CMOS devices with a single work function gate electrode and method of fabrication
US7939862B2 (en) 2007-05-30 2011-05-10 Synopsys, Inc. Stress-enhanced performance of a FinFet using surface/channel orientations and strained capping layers

Also Published As

Publication number Publication date
CN101106159B (zh) 2011-03-16
US20160322463A1 (en) 2016-11-03
TW200805651A (en) 2008-01-16
US20080006908A1 (en) 2008-01-10
US9406800B2 (en) 2016-08-02
CN101106159A (zh) 2008-01-16
US9214554B2 (en) 2015-12-15
US9653552B2 (en) 2017-05-16
US8946811B2 (en) 2015-02-03
US20160104800A1 (en) 2016-04-14
US20150206970A1 (en) 2015-07-23

Similar Documents

Publication Publication Date Title
TWI375329B (en) Body-tied, strained-channel multi-gate device and methods of manufacturing same
US7154118B2 (en) Bulk non-planar transistor having strained enhanced mobility and methods of fabrication
US9230989B2 (en) Hybrid CMOS nanowire mesh device and FINFET device
US11728428B2 (en) Dielectric isolated fin with improved fin profile
US9053981B2 (en) Hybrid CMOS nanowire mesh device and PDSOI device
US8299546B2 (en) Semiconductor devices with vertical extensions for lateral scaling
US8563376B2 (en) Hybrid CMOS nanowire mesh device and bulk CMOS device
US11881505B2 (en) Tri-layer STI liner for nanosheet leakage control
TW201025605A (en) FinFET with longitudinal stress in a channel
TW201131769A (en) Wrap-around contacts for finfet and tri-gate devices
EP3454378A1 (en) A method for forming a vertical channel device, and a vertical channel device
US9502420B1 (en) Structure and method for highly strained germanium channel fins for high mobility pFINFETs
TW201731111A (zh) 鰭式場效電晶體及其製造方法
TW201203384A (en) Self-aligned contacts for field effect transistor devices
US11049933B2 (en) Creation of stress in the channel of a nanosheet transistor
JP2011066362A (ja) 半導体装置
TW200807565A (en) Semiconductor device and method for fabricating the same
JP4290038B2 (ja) 半導体装置及びトランジスタ並びに半導体装置の製造方法
JP2010010382A (ja) 半導体装置およびその製造方法
TW202105617A (zh) 一種形成半導體裝置的方法