TWI393220B - 半導體元件之製法 - Google Patents

半導體元件之製法 Download PDF

Info

Publication number
TWI393220B
TWI393220B TW098130696A TW98130696A TWI393220B TW I393220 B TWI393220 B TW I393220B TW 098130696 A TW098130696 A TW 098130696A TW 98130696 A TW98130696 A TW 98130696A TW I393220 B TWI393220 B TW I393220B
Authority
TW
Taiwan
Prior art keywords
layer
trench
fabricating
forming
semiconductor device
Prior art date
Application number
TW098130696A
Other languages
English (en)
Other versions
TW201025509A (en
Inventor
Chiung Han Yeh
Sheng Chen Chung
Kong Beng Thei
Harry Hak-Lay Chuang
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 TW201025509A publication Critical patent/TW201025509A/zh
Application granted granted Critical
Publication of TWI393220B publication Critical patent/TWI393220B/zh

Links

Classifications

    • 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
    • H01L21/823828Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes
    • H01L21/823842Complementary field-effect transistors, e.g. CMOS with a particular manufacturing method of the gate conductors, e.g. particular materials, shapes gate conductors with different gate conductor materials or different gate conductor implants, e.g. dual gate structures
    • 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
    • H01L29/66545Unipolar field-effect transistors with an insulated gate, i.e. MISFET using a dummy, i.e. replacement gate in a process wherein at least a part of the final gate is self aligned to the dummy gate
    • 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
    • H01L21/02Manufacture or treatment of semiconductor devices or of parts thereof
    • H01L21/04Manufacture 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
    • H01L21/18Manufacture 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
    • H01L21/28Manufacture of electrodes on semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/268
    • H01L21/28008Making conductor-insulator-semiconductor electrodes
    • H01L21/28017Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon
    • H01L21/28026Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor
    • H01L21/28088Making conductor-insulator-semiconductor electrodes the insulator being formed after the semiconductor body, the semiconductor being silicon characterised by the conductor the final conductor layer next to the insulator being a composite, e.g. TiN
    • 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
    • H01L29/40Electrodes ; Multistep manufacturing processes therefor
    • H01L29/43Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
    • H01L29/49Metal-insulator-semiconductor electrodes, e.g. gates of MOSFET
    • H01L29/51Insulating materials associated therewith
    • H01L29/517Insulating materials associated therewith the insulating material comprising a metallic compound, e.g. metal oxide, metal silicate

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Computer Hardware Design (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Ceramic Engineering (AREA)
  • Metal-Oxide And Bipolar Metal-Oxide Semiconductor Integrated Circuits (AREA)
  • Electrodes Of Semiconductors (AREA)
  • Insulated Gate Type Field-Effect Transistor (AREA)
  • Internal Circuitry In Semiconductor Integrated Circuit Devices (AREA)

Description

半導體元件之製法
本發明係有關於半導體元件之製法,且特別是有關於一種調整高介電常數(high-k)金屬閘極元件之功函數的方法。
半導體積體電路(integrated circuit,IC)已經歷快速的發展。隨著IC材料與設計上的發展,使得IC每一個世代擁有比前一個世代小且複雜的電路。然而,這些發展也提高了IC製程的複雜度,為了實現這些先進IC,在IC的製程上也需要對等的發展。
IC發展的過程中,當IC幾何尺寸(亦即製程所能得到的最小元件(或線))逐漸縮小的同時,功能元件之密度(亦即每單位晶片面積中的內連線元件)隨之逐漸增加。尺寸縮小之好處在於增加生產效率(production efficiency)與降低相關製程成本。然而,尺寸的縮小也產生相對較高的耗電量(power dissipation),此問題可藉由使用低耗電元件而解決,例如互補金屬氧化半導體(CMOS)元件。CMOS元件一般包括閘極氧化層與多晶矽閘極電極。當元件尺寸逐漸縮小時,為了增進元件的效能,需要將閘極氧化層與多晶矽閘極金屬分別置換成高介電常數(high-k)閘極介電層與金屬閘極電極。然而,NMOS元件和PMOS元件需要不同的功函數(work function)之閘極結構。方法之一包括利用蓋層(capping layer)調整PMOS元件和NMOS元件之金屬閘極的有效功函數。雖然此種方法可滿足特定目的,但是卻無法滿足所有的需求。例如,蓋層可能降低載子遷移率(carrier mobility),且可能使得元件性能反而受到影響。
本發明提供一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一虛設閘極之第一閘極結構,該第二電晶體具有一第二虛設閘極之第二閘極結構;移除該第一虛設閘極與該第二虛設閘極,以分別形成一第一溝槽與一第二溝槽;形成一第一金屬層以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之第一金屬層;形成一第二金屬層,以部分填充該第一溝槽與該第二溝槽;形成一第三金屬層,以部分填充該第一溝槽與該第二溝槽;實施一熱處理製程(thermal process),以回焊(reflow)該第二金屬層與該第三金屬層;以及形成一第四金屬層,以填充該第一溝槽與該第二溝槽之一剩餘部份。
本發明另提供一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一閘極結構,該第二電晶體具有一第二閘極結構,且該第一閘極結構與該第二閘極結構各自包括一高介電常數層形成於該半導體基材之上,一阻障層形成於該高介電常數層之上,以及一虛設多晶矽層形成於該阻障層之上;從該第一閘極結構與該第二閘極結構中移除該虛設多晶矽層,以分別形成一第一溝槽與一第二溝槽;形成一P型功函數金屬層(P-metal)以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之P型功函數金屬層;形成一鈦(Ti)層,以部分填充該第一溝槽與該第二溝槽;形成一鋁(Al)層,以部分填充該第一溝槽與該第二溝槽;回焊(reflow)該鈦層與該鋁層,以形成一鋁鈦(TiAl)層;以及形成一填充金屬層,以填充該第一溝槽與該第二溝槽之一剩餘部份。
本發明亦提供一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一閘極結構,該第二電晶體具有一第二閘極結構,且該第一閘極結構與該第二閘極結構各自包括一高介電常數層形成於該半導體基材之上,一阻障層形成於該高介電常數層之上,以及一虛設多晶矽層形成於該阻障層之上;從該第一閘極結構與該第二閘極結構中移除該虛設多晶矽層,以分別形成一第一溝槽與一第二溝槽;形成一P型功函數金屬層(P-metal)以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之P型功函數金屬層;形成一鈦(Ti)層,以部分填充該第一溝槽與該第二溝槽;形成一鋁(Al)層,以部分填充該第一溝槽與該第二溝槽;回焊(reflow)該鈦層與該鋁層,以形成一鋁鈦(TiAl)層;實施一化學機械研磨製程(CMP),用以移除位於該第一溝槽與該第二溝槽之外的的各金屬層;以及形成一填充金屬層,以填充該第一溝槽與該第二溝槽之一剩餘部份。
為讓本發明之上述和其他目的、特徵、和優點能更明顯易懂,下文特舉出較佳實施例,並配合所附圖式,作詳細說明如下:
以下特舉出本發明之實施例,並配合所附圖式作詳細說明。以下實施例的元件和設計係為了簡化所揭露之發明,並非用以限定本發明。舉例而言,說明書中提及形成第一特徵位於第二特徵之上,其包括第一特徵與第二特徵是直接接觸的實施例,另外也包括於第一特徵與第二特徵之間另外有其他特徵的實施例,亦即,第一特徵與第二特徵並非直接接觸。此外,為了簡化與清晰的目的,各種特徵可能用不同的尺寸簡化地繪出。此外,本發明所揭露之實施例是”後閘極”金屬製程,然而,熟知本領域之人士可應用於其他製程及/或使用其他材料。
依照本發明所揭露之各種實施例,第1圖顯示具有雙閘極結構之半導體元件之製作方法100的流程圖。依照第1圖所示之方法100,第2A圖至第2K圖顯示半導體元件200於各個製程階段的剖面圖。須注意的是,為了強調分別形成NMOS元件和PMOS元件之雙金屬閘極結構,因此第2A圖至第2K圖之圖示已經過簡化。再者,部分的半導體元件200可以使用一般CMOS之製造流程。據此,須了解的是,於第1圖方法100之前,期間或之後可提供額外的製程,且某些其他製程在此僅作簡單陳述。可利用後閘極製程製備半導體元件200(也稱為取代多晶矽閘極製程)。於後閘極製程,先形成虛設多晶矽閘極結構,接著,進行一般CMOS製造流程,直到沉積層間介電層(interlayer dielectric,ILD)。之後,虛設多晶矽閘極結構可被移除,並且被金屬閘極結構所取代。
半導體元件之製作方法100起始於方塊102,其提供具有第一區域與第二區域之半導體基材。於第2A圖中,半導體元件200可包括一半導體基材202,例如矽基材。此基材202可另外包括矽化鍺、砷化鎵、或其他適合的半導體材料。基材202尚可包括其他特徵,例如各種摻雜區域,如p型井或n型井,阻障層,及/或磊晶層。再者,基材202可以是位於絕緣體上之半導體,例如絕緣層上覆矽(silicon on insulator,SOI)。於另外的實施例中,半導體基材202可包括一摻雜磊晶層,一梯度(gradient)半導體層,及/或尚可包括一半導體層位於另一不同類型之半導體層之上,例如矽層位於矽化鍺層之上。於其他實施例中,一化合物半導體基材可包括多層矽結構,或者是含有多層化合物半導體結構之矽基材。
半導體元件200尚可包括一絕緣結構(圖中未顯示)204,例如淺溝隔離結構(shallow trench isolation,STI)形成於基材202之中,用以隔離基材202中之主動區域206和208。隔離結構204可由氧化矽,氮化矽,氮氧化矽,摻雜氟的矽酸鹽(FSG),及/或本領域熟知之低介電常數(low k)材料所組成。主動區域206可用來形成NMOS元件,而主動區域208可用來形成PMOS元件。
半導體元件200尚包括一界面層204於基材202之上(如第2F圖所示)。界面層可包括厚度為約5埃到10埃之氧化矽層(由熱氧化或化學氧化法形成)。界面層可藉由下述方法形成:原子層沉積法(atomic layer deposition,ALD)、化學氣相沉積法(chemical vapor deposition,CVD)、物理氣相沉積法(physical or sputter),熱氧化法或上述之組合。另外,界面層可視需要的包括氮氧化矽(SiON)。
方法100接著進行方塊104,其形成一高介電常數(high-k)層於基材之上。半導體元件200尚包括一高介電常數層212形成於界面層之上。此高介電常數層212可藉由原子層沉積法(ALD)、化學氣相沉積法(CVD)、金屬-有機CVD(MOCVD)、物理氣相沉積法(PVD)、熱氧化法(thermal oxidation)或上述之組合。高介電常數層212之厚度為約10埃到30埃。高介電常數層212可包括氧化鉿(HfOx)。另外的,高介電常數層212可視需要的包括其他高介電常數材料,例如氧化鑭(LaO)、氧化鋁(AlO)、氧化鋯(ZrO)、氧化鈦(TiO)、氧化鉭(Ta2 O5 )、氧化釔(Y2 O3 )、氧化鈦鍶(SrTiO3 ,STO))、氧化鈦鋇(BaTiO3 ,BTO)、氧化鋯鋇(BaZrO)、氧化鋯鉿(HfZrO)、氮氧化鋯鉿(HfZrON)、氧化鑭鉿(HfLaO)、氧化矽鉿(HfSiO)、氮氧化矽鉿(HfSiON)、氧化矽鑭(LaSiO)、氧化矽鋁(AlSiO)、氧化鉭鉿(HfTaO)、氧化鈦鉿(HfTiO)、鈦酸(鋇,鍶)((Ba,Sr)TiO3 ,BST)、氧化鋁(Al2 O3 )、氮化矽(Si3 N4 )、氮氧化物(oxynitride)或其他適合的材料。
方法100接著進行方塊106,其形成阻障層於高介電常數層之上。請參見第2B圖,半導體元件200尚包括一阻障層216形成於高介電常數層212之上。阻障層216可包括厚度為約10埃到20埃之氮化鈦(TiN)。阻障層216可具有之成分為Tix N(1-x ),其中x等於0.43-0.57。於後續製程步驟期間,阻障層216可作為高介電常數層212與後續形成之虛設多晶矽閘極結構之間的阻障,用以降低或消除介於多晶矽與高介電常數層之間的賣米能階釘札效應(Femi level pinning)。再者,阻障層216於後續之蝕刻製程可扮演停止層的角色。阻障層216可藉由各種沉積製程製得,例如物理氣相沉積法(PVD or sputtering)、化學氣相沉積法(CVD)、電鍍(plating)或其他適合的方法。
方法100接著進行方塊108,其形成多晶矽層於阻障層之上。請參見第2C圖,半導體元件200尚包括藉由合適的沉積製程將多晶矽層218形成於阻障層216之上。多晶矽層218之厚度為約400埃到800埃。半導體元件200可包括一硬罩幕層220形成於多晶矽層218之上。硬罩幕層220可包括氮化矽、氮氧化矽、碳化矽、及/或其他適合的介電材料,其可藉由沉積方法形成(如CVD或PVD)。硬罩幕層220之厚度為約100埃到400埃。此外,為了於微影製程(photolithography)時幫助光阻層的圖案化,半導體元件200可包括一抗反射層(antireflective coating layer)或底部抗反射層(bottom antireflective coating,BARC)。例如,圖案化光阻層可形成於硬罩幕層220之上,其中硬罩幕層220包括一圖案221位於NMOS元件206之上,以及另一圖案222位於PMOS元件208之上。圖案221,222可藉由乾式蝕刻或濕式蝕刻製程圖案化硬罩幕層220。
方法100接著進行方塊110,其於第一區域形成第一閘極堆疊,以及於第二區域形成第二閘極堆疊。請參見第2D圖,利用圖案化硬罩幕層於NMOS元件206中形成閘極堆疊231,於PMOS元件208中形成閘極堆疊232,形成之方法為乾式蝕刻、濕式蝕刻或上述之組合。例如,硬罩幕層之圖案220n,220p可被轉換到多晶矽層218上,用以形成虛設多晶矽閘極結構218n,218p。閘極堆疊231可包括一高介電常數層212n,一阻障層216n,一虛設多晶矽閘極218n,以及一硬罩幕層220n。閘極堆疊232可包括一界面層,一高介電常數層212p,一阻障層216p,一虛設多晶矽閘極218p,以及一硬罩幕層220p。
方法100接著進行方塊111,其於第一與第二閘極堆疊之側壁形成側壁間隙壁。請參見第2E圖,各種特徵與結構可藉由本領域人士所熟知之CMOS製作流程而形成,因此在此不多著墨。例如,可形成輕摻雜源極區域(lightly doped drain regions,LDD)、側壁或閘極間隙壁234、重摻雜源極/汲極區(S/D)236、矽化物區、接觸蝕刻停止層(contact etch stop layer,CESL)、層間介電層(inter-level dielectric,ILD)238。間隙壁234可包括氧化矽、氮化矽、氮氧化矽、碳化矽、或其他適合的材料。輕摻雜源極區域(lightly doped drain regions,LDD)與重摻雜源極/汲極區(S/D)236可依據電晶體設計(亦即NMOS或PMOS)之需求佈植p型或n型雜質至基材202中而得。矽化物特徵可藉由自對準矽化物製程(self-aligned silicide process)形成於重摻雜源極/汲極區(S/D)236之上。接觸蝕刻停止層(CESL)可包括氮化矽、氮氧化矽或其他適合的材料。可依據半導體元件200之一或多個額外的特徵選擇CESL之成分。ILD層238藉由化學氣相沉積法(CVD)、高密度電漿(high density plasma,HDP)、物理氣相沉積法(PVD)、旋轉塗佈法(spin-on)或其他適合的方法形成於CESL之上。ILD層238可包括氧化矽、氮氧化矽或低介電常數材料。
方法100接著進行方塊112,從第一閘極堆疊與第二閘極堆疊中移除虛設多晶矽閘極,以分別形成第一溝槽與第二溝槽。請參見第2F圖,實施一化學機械研磨製程(CMP)以分別曝露閘極堆疊231,232之虛設多晶矽閘極218n,218p之上表面。化學機械研磨製程可平坦化ILD層238,以到達硬罩幕層220n,220p,且可過度研磨(overpolishing)以移除硬罩幕層並曝露出虛設多晶矽閘極218n,218p。可藉由後蝕刻製程、乾式蝕刻、濕式蝕刻、或其他適合的方法移除於NMOS元件206中之虛設多晶矽閘極218n以及於PMOS元件208中之虛設多晶矽閘極218p。例如,濕式蝕刻製程包括曝露於含有氫氧化物之溶液(亦即氫氧化銨),去離子水,及/或其他適合的蝕刻溶液。阻障層216n,216p於蝕刻製程可扮演蝕刻阻障層之角色。藉由選擇性地蝕刻虛設多晶矽閘極218n,218p,以於閘極堆疊231中形成溝槽214n,且於閘極堆疊232中形成溝槽214p。
方法100接著進行方塊114,其中第一金屬層形成於第二溝槽中的阻障層之上。一或多層金屬層(亦即功函數金屬層)形成於PMOS元件208中之溝槽241p中。例如,P型功函數金屬(P-metal)可形成於PMOS元件208之溝槽241p中。須了解的是,第2G到第2K圖顯示NMOS元件206和PMOS元件208個別之金屬閘極的詳細剖面圖,其中於後閘極製程中形成金屬閘極。請參見第2G圖,沉積氮化鈦(TiN)層244以部分填充溝槽241n,241p,且其厚度可為約40埃。氮化鈦(TiN)層244可藉由原子層沉積法或其他適合的製程製備而得。氮化鎢(WN)層246形成於氮化鈦(TiN)層244之上,用以部份填充溝槽241n,241p,且其厚度可為約50埃。氮化鎢(WN)層246可藉由物理氣相沉積法(PVD)或其他適合的製程製備而得。須了解的是,雖然此處舉例了多層P金屬層,但是P-金屬層可包括單層,例如氮化鈦(TiN)、氮化鎢(WN)、或其他適合的金屬。
請參見第2H圖,藉由N/P圖案化製程從NMOS元件206之溝槽241n中移除氮化鈦(TiN)層244與氮化鎢(WN)層246。例如,為了保護PMOS元件208,因此進行N/P圖案化製程時使用光阻。微影製程(photolithography)可包括旋轉塗佈(spin coating)、軟烘烤(soft-baking)、曝光(exposure)、後烘烤(post-baking)、顯影(developing)、潤洗(rinsing)、乾燥(drying)、與其他適合的製程。另外的,N/P圖案化可包括濕浸式微影(immersion lithography)、電子束微影(electron beam lithography)或其他適合的製程。據此,利用乾式蝕刻或濕式蝕刻製程移除於NMOS元件206中的氮化鈦(TiN)層244與氮化鎢(WN)層246。所以,氮化鈦(TiN)層244p與氮化鎢(WN)層246p(亦即P功函數金屬)殘留於PMOS元件208之溝槽241p中。
方法100接著進行方塊116,其中第二金屬層形成於第一溝槽中的阻障層之上,並形成於第二溝槽之第一金屬層之上。請參見第21圖,沉積鈦(Ti)層248,因此鈦層248形成於溝槽241n之阻障層216n之上,且鈦層248形成於溝槽241p之TiN/WN層244p,246p之上。鈦層248之厚度可為約30埃。鈦層248可藉由物理氣相沉積法(PVD)製得,例如,利用ExtensaTM 系統(Applied Materials,Inc of Santa,Clara,California)
方法100接著進行方塊118,其中第三金屬層形成於第一溝槽與第二溝槽中之第二金屬層之上。於此實施例中,沉積鋁(Al)層250,因此鋁層250形成於溝槽241n,241p中之鈦層248上。鋁層250之厚度可為約70埃。鋁層250可藉由化學氣相沉積法(CVD)或其他適合的方法製得。
方法100接著進行方塊120,其中實施一熱處理製程(thermal process),用以回焊(reflow)第二金屬層與第三金屬層。請參見第2J圖,實施熱處理製程251用以回焊溝槽241n,241p中的鋁層250與鈦層248(亦即對鋁/鈦反應)。熱處理製程於約200℃~500℃的溫度下進行,時間為約50秒~200秒。於NMOS元件206之金屬成分可包括鈦:鋁為2.3:1之比例。此外,須了解的是,鈦/鋁可包括其他比例。因此,回焊製程所提供的是,將NMOS元件206與PMOS元件208中的金屬閘極調整成有效的功函數。
方法100接著進行方塊122,其中沉積第四金屬層以填充第一溝槽與第二溝槽剩餘的部分。請參見第2K圖,一填充金屬層252,例如鋁,藉由往上堆積之物理氣相沉積法(bottom-up PVD)或其他適合的方法,形成於溝槽241n,241p中的回焊鈦/鋁層248,250之上。另外,填充金屬層252可視需要的包括鎢(W)、銅(Cu)或其他適合的材料。可沉積填充金屬層252直到溝槽241n,241p之剩餘部份大體上或完全被填滿。於溝槽241n(NMOS元件206)中的填充金屬的含量大於溝槽241p(PMOS元件208)中的含量。因此,須注意的是,由於溝槽241p中已經有其他各種金屬層,PMOS的缺口填充(gap fill)是較具挑戰的。據此,於沉積後續填充金屬層或其他金屬層之前,可實施一額外的化學機械研磨製程(CMP),用以平坦化並移除溝槽外的各種金屬層。
方法100接著進行方塊124,實施一化學機械研磨製程(CMP)。實施化學機械研磨(亦即金屬閘極CMP製程)於各種金屬之上,用以平坦化NMOS元件206和PMOS元件208中的閘極結構231,232。CMP製程具有高度選擇性,因此能提供閘極結構和ILD層大體上平坦的表面。NMOS元件206之閘極結構231可包括界面層、高介電常數層212n、氮化鈦層216n、回焊的鈦/鋁層248,250,以及鋁層252。PMOS元件208之閘極結構232可包括界面層、高介電常數層212p、氮化鈦層216p、氮化鈦層244p、氮化鎢層246p、回焊的鈦/鋁層248,250,以及鋁層252。據此,NMOS元件206之金屬閘極可執行正確的N功函數,而PMOS元件208之金屬閘極可執行正確的P功函數。因此,可輕易的達到NMOS元件206和PMOS元件208所需之臨界電壓(threshold voltage),用以增進元件效能與可靠度(reliability)。
須注意的是,半導體元件200可進行其他製程,用以形成各種特徵,例如接觸插塞/介層插塞(contacts/vias),內連線金屬層(interconnect metal layer)、層間或金屬介電層(interlayer or metal dielectric)、保護層(passivation)、接合墊(bonding pad)、封裝結構(packaging)等等。
應能理解的是,此處所揭露之不同實施例提供不同的優點,且對於所有實施例不需要特定的優點。例如,本發明所揭露之方法提供一種CMOS製作流程中簡單且有效方法,用以調整NMOS元件和PMOS元件之金屬閘極的功函數。此處所揭露之方法與元件不需要用蓋層作為調整金屬閘極的功函數,因此載子遷移率不會因此受到影響。再者,此處所揭露之方法與元件可輕易的整合於目前的CMP製程流程與半導體配備。例如,此處所揭露之佈植材料與製程與CMOS製造流程相容,且不需昂貴的成本。
雖然本發明已以數個較佳實施例揭露如上,然其並非用以限定本發明,任何所屬技術領域中具有通常知識者,在不脫離本發明之精神和範圍內,當可作任意之更動與潤飾,因此本發明之保護範圍當視後附之申請專利範圍所界定者為準。例如,為了特定的技術與應用,可調整各種金屬層之厚度,用以最佳化NMOS元件和PMOS元件之操作性能。
100...半導體元件之製法
102...提供具有第一區域與第二區域之半導體基材
104...形成一高介電常數(high-k)層於基材之上
106...形成阻障層於高介電常數層之上
108...形成半導體層於阻障層之上
110...於第一區域形成第一閘極堆疊,以及於第二區域形成第二閘極堆疊
111...於第一與第二閘極堆疊之側壁形成側壁間隙壁
112...從第一閘極堆疊移除半導體層以形成第一溝槽,以及從第二閘極堆疊移除半導體層以形成第二溝槽
114...形成第一金屬層於第二溝槽中的阻障層之上
116...形成第二金屬層於第一溝槽中的阻障層之上,並形成於第二溝槽之第一金屬層之上
118...形成第三金屬層於第一溝槽與第二溝槽之第二金屬層之上
120...實施一熱處理製程以回焊(reflow)第二金屬層與第三金屬層
122...形成第四金屬層以填充第一溝槽與第二溝槽剩餘的部分
124...實施化學機械研磨製程(CMP)
200...半導體元件
202...半導體基材
204...隔離結構
206、208...主動區域
212、212n、212p...高介電常數層
216、216n、216p...阻障層
218、218n、218p...多晶矽層
220、220n、220p...硬罩幕層
221、222...圖案
231、232...閘極堆疊
234...閘極間隙壁
236...S/D區域
238...層間介電層(ILD)
241n、241p...溝槽
244...氮化鈦層
246...氮化鎢層
250...鋁層
251...熱處理製程
252...鋁層
第1圖為一流程圖,用以說明本發明製備具有雙金屬閘極結構之半導體元件的方法。
第2A~2K圖為一系列剖面圖,用以說明依照本發明第1圖所示方法的各個製程階段。
100...半導體元件之製法
102...提供具有第一區域與第二區域之半導體基材
104...形成一高介電常數(high-k)層於基材之上
106...形成阻障層於高介電常數層之上
108...形成半導體層於阻障層之上
110...於第一區域形成第一閘極堆疊,以及於第二區域形成第二閘極堆疊
111...於第一與第二閘極堆疊之側壁形成側壁間隙壁
112...從第一閘極堆疊移除半導體層以形成第一溝槽,以及從第二閘極堆疊移除半導體層以形成第二溝槽
114...形成第一金屬層於第二溝槽中的阻障層之上
116...形成第二金屬層於第一溝槽中的阻障層之上,並形成於第二溝槽之第一金屬層之上
118...形成第三金屬層於第一溝槽與第二溝槽之第二金屬層之上
120...實施一熱處理製程以回焊(reflow)第二金屬層與第三金屬層
122...形成第四金屬層以填充第一溝槽與第二溝槽剩餘的部分
124...實施化學機械研磨製程(CMP)

Claims (20)

  1. 一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一虛設閘極之第一閘極結構,該第二電晶體具有一第二虛設閘極之第二閘極結構;移除該第一虛設閘極與該第二虛設閘極,以分別形成一第一溝槽與一第二溝槽;形成一第一金屬層以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之第一金屬層;形成一第二金屬層,以部分填充該第一溝槽與該第二溝槽;形成一第三金屬層,以部分填充該第一溝槽與該第二溝槽;實施一熱處理製程(thermal process),以回焊(reflow)該第二金屬層與該第三金屬層;以及形成一第四金屬層,以填充該第一溝槽與該第二溝槽之剩餘部份。
  2. 如申請專利範圍第1項所述之半導體元件之製法,其中該第一虛設閘極與該第二虛設閘極各自包括多晶矽。
  3. 如申請專利範圍第1項所述之半導體元件之製法,其中該第二金屬層包括鈦(Ti)。
  4. 如申請專利範圍第1項所述之半導體元件之製法,其中該第三金屬層包括鋁(Al)。
  5. 如申請專利範圍第1項所述之半導體元件之製法,其中實施該熱處理製程包括於約200℃~500℃之溫度下實施該熱處理製程。
  6. 如申請專利範圍第1項所述之半導體元件之製法,其中形成第四金屬層之後,尚包括實施一化學機械研磨製程(CMP),用以研磨該第一閘極與該第二閘極結構。
  7. 如申請專利範圍第6項所述之半導體元件之製法,其中形成該第四金屬層之前,尚包括實施另一化學機械研磨製程(CMP)。
  8. 如申請專利範圍第1項所述之半導體元件之製法,其中該第四金屬層包括鋁(Al)。
  9. 如申請專利範圍第1項所述之半導體元件之製法,其中該第一金屬層包括氮化鈦(TiN)與氮化鎢(WN)所組成之多層金屬層。
  10. 如申請專利範圍第1項所述之半導體元件之製法,其中該第一電晶體為NMOS元件,且該第二電晶體為PMOS元件。
  11. 一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一閘極結構,該第二電晶體具有一第二閘極結構,且該第一閘極結構與該第二閘極結構各自包括一高介電常數層形成於該半導體基材之上,一阻障層形成於該高介電常數層之上,以及一虛設多晶矽層形成於該阻障層之上;從該第一閘極結構與該第二閘極結構中移除該虛設多晶矽層,以分別形成一第一溝槽與一第二溝槽;形成一P型功函數金屬層(P-metal)以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之P型功函數金屬層;形成一鈦(Ti)層,以部分填充該第一溝槽與該第二溝槽;形成一鋁(Al)層,以部分填充該第一溝槽與該第二溝槽;回焊(reflow)該鈦層與該鋁層,以形成一鋁鈦(TiAl)層;以及形成一填充金屬層,以填充該第一溝槽與該第二溝槽之剩餘部份。
  12. 如申請專利範圍第11項所述之半導體元件之製法,其中該鈦層係由物理氣相沉積法(PVD)製得。
  13. 如申請專利範圍第11項所述之半導體元件之製法,其中該鋁層係由化學氣相沉積法(CVD)製得。
  14. 如申請專利範圍第11項所述之半導體元件之製法,其中該回焊該鈦層與鋁層包括於約200℃~500℃之溫度下實施一熱處理製程(thermal process)。
  15. 如申請專利範圍第11項所述之半導體元件之製法,其中該鈦層之厚度為約30埃,且該鋁層之厚度為約70埃。
  16. 一種半導體元件之製法,包括以下步驟:提供一半導體基材;形成一第一電晶體與一第二電晶體於該半導體基材中,其中該第一電晶體具有一第一閘極結構,該第二電晶體具有一第二閘極結構,且該第一閘極結構與該第二閘極結構各自包括一高介電常數層形成於該半導體基材之上,一阻障層形成於該高介電常數層之上,以及一虛設多晶矽層形成於該阻障層之上;從該第一閘極結構與該第二閘極結構中移除該虛設多晶矽層,以分別形成一第一溝槽與一第二溝槽;形成一P型功函數金屬層(P-metal)以部分填充該第一溝槽與該第二溝槽;移除於該第一溝槽中之P型功函數金屬層;形成一鈦(Ti)層,以部分填充該第一溝槽與該第二溝槽;形成一鋁(Al)層,以部分填充該第一溝槽與該第二溝槽;回焊(reflow)該鈦層與該鋁層,以形成一鋁鈦(TiAl)層;實施一化學機械研磨製程(CMP),用以移除位於該第一溝槽與該第二溝槽之外的的各金屬層;以及形成一填充金屬層,以填充該第一溝槽與該第二溝槽之剩餘部份。
  17. 如申請專利範圍第16項所述之半導體元件之製法,其中形成該填充金屬層之後,尚包括實施另一化學機械研磨製程(CMP),用以移除位於該第一溝槽與該第二溝槽外之該填充金屬層。
  18. 如申請專利範圍第16項所述之半導體元件之製法,其中該填充金屬包括鋁(Al)、鎢(W)或銅(Cu)。
  19. 如申請專利範圍第16項所述之半導體元件之製法,其中該鈦層之厚度為約30埃,且該鋁層之厚度為約70埃。
  20. 如申請專利範圍第19項所述之半導體元件之製法,其中該鈦層係由物理氣相沉積法(PVD)製得,且該鋁層係由化學氣相沉積法(CVD)製得。
TW098130696A 2008-09-12 2009-09-11 半導體元件之製法 TWI393220B (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US9665908P 2008-09-12 2008-09-12
US12/488,960 US7927943B2 (en) 2008-09-12 2009-06-22 Method for tuning a work function of high-k metal gate devices

Publications (2)

Publication Number Publication Date
TW201025509A TW201025509A (en) 2010-07-01
TWI393220B true TWI393220B (zh) 2013-04-11

Family

ID=42007600

Family Applications (1)

Application Number Title Priority Date Filing Date
TW098130696A TWI393220B (zh) 2008-09-12 2009-09-11 半導體元件之製法

Country Status (3)

Country Link
US (2) US7927943B2 (zh)
CN (1) CN101677087B (zh)
TW (1) TWI393220B (zh)

Families Citing this family (145)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008056289A1 (en) * 2006-11-06 2008-05-15 Nxp B.V. Method of manufacturing a fet gate
US7927943B2 (en) * 2008-09-12 2011-04-19 Taiwan Semiconductor Manufacturing Company, Ltd. Method for tuning a work function of high-k metal gate devices
US8093116B2 (en) * 2008-10-06 2012-01-10 Taiwan Semiconductor Manufacturing Company, Ltd. Method for N/P patterning in a gate last process
US8564094B2 (en) * 2009-09-09 2013-10-22 Micron Technology, Inc. Capacitors including at least two portions of a metal nitride material, methods of forming such structures, and semiconductor devices including such structures
US8273617B2 (en) 2009-09-30 2012-09-25 Suvolta, Inc. Electronic devices and systems, and methods for making and using the same
US20110079861A1 (en) * 2009-09-30 2011-04-07 Lucian Shifren Advanced Transistors with Threshold Voltage Set Dopant Structures
US8421162B2 (en) 2009-09-30 2013-04-16 Suvolta, Inc. Advanced transistors with punch through suppression
KR101656444B1 (ko) 2010-01-25 2016-09-09 삼성전자주식회사 상보형 mos 트랜지스터, 상기 상보형 mos 트랜지스터를 포함하는 반도체 장치, 및 상기 반도체 장치를 포함하는 반도체 모듈
DE102010002411B4 (de) * 2010-02-26 2012-10-31 Globalfoundries Dresden Module One Limited Liability Company & Co. Kg Verfahren zur Herstellung von Kontaktbalken mit reduzierter Randzonenkapazität in einem Halbleiterbauelement
US8530286B2 (en) 2010-04-12 2013-09-10 Suvolta, Inc. Low power semiconductor transistor structure and method of fabrication thereof
JP5634742B2 (ja) * 2010-04-30 2014-12-03 ピーエスフォー ルクスコ エスエイアールエルPS4 Luxco S.a.r.l. 半導体装置の製造方法
US8569128B2 (en) 2010-06-21 2013-10-29 Suvolta, Inc. Semiconductor structure and method of fabrication thereof with mixed metal types
US8759872B2 (en) 2010-06-22 2014-06-24 Suvolta, Inc. Transistor with threshold voltage set notch and method of fabrication thereof
CN102376576A (zh) * 2010-08-24 2012-03-14 中芯国际集成电路制造(上海)有限公司 栅极沟槽以及半导体器件的制造方法
US8377783B2 (en) 2010-09-30 2013-02-19 Suvolta, Inc. Method for reducing punch-through in a transistor device
US8404551B2 (en) 2010-12-03 2013-03-26 Suvolta, Inc. Source/drain extension control for advanced transistors
US8461875B1 (en) 2011-02-18 2013-06-11 Suvolta, Inc. Digital circuits having improved transistors, and methods therefor
US8574990B2 (en) 2011-02-24 2013-11-05 United Microelectronics Corp. Method of manufacturing semiconductor device having metal gate
US8525271B2 (en) 2011-03-03 2013-09-03 Suvolta, Inc. Semiconductor structure with improved channel stack and method for fabrication thereof
US8211775B1 (en) 2011-03-09 2012-07-03 United Microelectronics Corp. Method of making transistor having metal gate
CN102683397B (zh) * 2011-03-17 2016-04-06 联华电子股份有限公司 金属栅极结构及其制作方法
US8519487B2 (en) 2011-03-21 2013-08-27 United Microelectronics Corp. Semiconductor device
US8802524B2 (en) * 2011-03-22 2014-08-12 United Microelectronics Corp. Method of manufacturing semiconductor device having metal gates
US8400219B2 (en) 2011-03-24 2013-03-19 Suvolta, Inc. Analog circuits having improved transistors, and methods therefor
US8324118B2 (en) 2011-03-28 2012-12-04 United Microelectronics Corp. Manufacturing method of metal gate structure
US8748270B1 (en) 2011-03-30 2014-06-10 Suvolta, Inc. Process for manufacturing an improved analog transistor
CN102738083B (zh) * 2011-04-06 2016-05-25 联华电子股份有限公司 具有金属栅极的半导体元件的制作方法
US9384962B2 (en) * 2011-04-07 2016-07-05 United Microelectronics Corp. Oxygen treatment of replacement work-function metals in CMOS transistor gates
CN102737971B (zh) * 2011-04-15 2016-08-17 联华电子股份有限公司 具有金属栅极的半导体元件与其制造方法
CN102760758A (zh) * 2011-04-26 2012-10-31 联华电子股份有限公司 金属栅极结构
US8530980B2 (en) 2011-04-27 2013-09-10 United Microelectronics Corp. Gate stack structure with etch stop layer and manufacturing process thereof
US8796048B1 (en) 2011-05-11 2014-08-05 Suvolta, Inc. Monitoring and measurement of thin film layers
US8999861B1 (en) 2011-05-11 2015-04-07 Suvolta, Inc. Semiconductor structure with substitutional boron and method for fabrication thereof
US8811068B1 (en) 2011-05-13 2014-08-19 Suvolta, Inc. Integrated circuit devices and methods
US8569156B1 (en) 2011-05-16 2013-10-29 Suvolta, Inc. Reducing or eliminating pre-amorphization in transistor manufacture
US8841733B2 (en) 2011-05-17 2014-09-23 United Microelectronics Corp. Semiconductor device and method of fabricating the same
US8735987B1 (en) 2011-06-06 2014-05-27 Suvolta, Inc. CMOS gate stack structures and processes
US8704294B2 (en) 2011-06-13 2014-04-22 United Microelectronics Corp. Semiconductor device having metal gate and manufacturing method thereof
CN102420143A (zh) * 2011-06-15 2012-04-18 上海华力微电子有限公司 一种改善后栅极工艺高k栅电介质nmos hci方法
US20120319198A1 (en) 2011-06-16 2012-12-20 Chin-Cheng Chien Semiconductor device and fabrication method thereof
US8673758B2 (en) * 2011-06-16 2014-03-18 United Microelectronics Corp. Structure of metal gate and fabrication method thereof
US9490342B2 (en) 2011-06-16 2016-11-08 United Microelectronics Corp. Method for fabricating semiconductor device
US8536038B2 (en) 2011-06-21 2013-09-17 United Microelectronics Corp. Manufacturing method for metal gate using ion implantation
US8995204B2 (en) 2011-06-23 2015-03-31 Suvolta, Inc. Circuit devices and methods having adjustable transistor body bias
US8674452B2 (en) 2011-06-24 2014-03-18 United Microelectronics Corp. Semiconductor device with lower metal layer thickness in PMOS region
US8486790B2 (en) 2011-07-18 2013-07-16 United Microelectronics Corp. Manufacturing method for metal gate
US8580625B2 (en) 2011-07-22 2013-11-12 Tsuo-Wen Lu Metal oxide semiconductor transistor and method of manufacturing the same
US8629016B1 (en) 2011-07-26 2014-01-14 Suvolta, Inc. Multiple transistor types formed in a common epitaxial layer by differential out-diffusion from a doped underlayer
US8748986B1 (en) 2011-08-05 2014-06-10 Suvolta, Inc. Electronic device with controlled threshold voltage
WO2013022753A2 (en) 2011-08-05 2013-02-14 Suvolta, Inc. Semiconductor devices having fin structures and fabrication methods thereof
US8551876B2 (en) 2011-08-18 2013-10-08 United Microelectronics Corp. Manufacturing method for semiconductor device having metal gate
US8872286B2 (en) 2011-08-22 2014-10-28 United Microelectronics Corp. Metal gate structure and fabrication method thereof
US8614128B1 (en) 2011-08-23 2013-12-24 Suvolta, Inc. CMOS structures and processes based on selective thinning
US8645878B1 (en) 2011-08-23 2014-02-04 Suvolta, Inc. Porting a circuit design from a first semiconductor process to a second semiconductor process
US8477006B2 (en) * 2011-08-30 2013-07-02 United Microelectronics Corp. Resistor and manufacturing method thereof
US8713511B1 (en) 2011-09-16 2014-04-29 Suvolta, Inc. Tools and methods for yield-aware semiconductor manufacturing process target generation
US8921238B2 (en) 2011-09-19 2014-12-30 United Microelectronics Corp. Method for processing high-k dielectric layer
US8426277B2 (en) 2011-09-23 2013-04-23 United Microelectronics Corp. Semiconductor process
US9000568B2 (en) 2011-09-26 2015-04-07 United Microelectronics Corp. Semiconductor structure and fabrication method thereof
US8765588B2 (en) 2011-09-28 2014-07-01 United Microelectronics Corp. Semiconductor process
US9236466B1 (en) 2011-10-07 2016-01-12 Mie Fujitsu Semiconductor Limited Analog circuits having improved insulated gate transistors, and methods therefor
US8802579B2 (en) 2011-10-12 2014-08-12 United Microelectronics Corp. Semiconductor structure and fabrication method thereof
US8975179B2 (en) 2011-10-18 2015-03-10 Taiwan Semiconductor Manufacturing Company, Ltd. Planarization process for semiconductor device fabrication
CN103094208B (zh) * 2011-10-31 2015-04-01 中芯国际集成电路制造(上海)有限公司 晶体管的制造方法
US8440511B1 (en) 2011-11-16 2013-05-14 United Microelectronics Corp. Method for manufacturing multi-gate transistor device
US8703595B2 (en) * 2011-11-17 2014-04-22 Taiwan Semiconductor Manufacturing Company, Ltd. N/P boundary effect reduction for metal gate transistors
US9355209B2 (en) 2011-11-17 2016-05-31 Taiwan Semiconductor Manufacturing Company, Ltd. Revising layout design through OPC to reduce corner rounding effect
US8658487B2 (en) 2011-11-17 2014-02-25 United Microelectronics Corp. Semiconductor device and fabrication method thereof
US8709930B2 (en) 2011-11-25 2014-04-29 United Microelectronics Corp. Semiconductor process
CN103137489B (zh) * 2011-12-02 2016-03-30 中芯国际集成电路制造(上海)有限公司 半导体器件的制作方法
US8895327B1 (en) 2011-12-09 2014-11-25 Suvolta, Inc. Tipless transistors, short-tip transistors, and methods and circuits therefor
US8819603B1 (en) 2011-12-15 2014-08-26 Suvolta, Inc. Memory circuits and methods of making and designing the same
US8546212B2 (en) 2011-12-21 2013-10-01 United Microelectronics Corp. Semiconductor device and fabricating method thereof
US8598028B2 (en) 2011-12-22 2013-12-03 Taiwan Semiconductor Manufacturing Company, Ltd. Gate height loss improvement for a transistor
US8883600B1 (en) 2011-12-22 2014-11-11 Suvolta, Inc. Transistor having reduced junction leakage and methods of forming thereof
US8599623B1 (en) 2011-12-23 2013-12-03 Suvolta, Inc. Circuits and methods for measuring circuit elements in an integrated circuit device
US8691681B2 (en) 2012-01-04 2014-04-08 United Microelectronics Corp. Semiconductor device having a metal gate and fabricating method thereof
US8877619B1 (en) 2012-01-23 2014-11-04 Suvolta, Inc. Process for manufacture of integrated circuits with different channel doping transistor architectures and devices therefrom
US8970289B1 (en) 2012-01-23 2015-03-03 Suvolta, Inc. Circuits and devices for generating bi-directional body bias voltages, and methods therefor
US9093550B1 (en) 2012-01-31 2015-07-28 Mie Fujitsu Semiconductor Limited Integrated circuits having a plurality of high-K metal gate FETs with various combinations of channel foundation structure and gate stack structure and methods of making same
US8987096B2 (en) 2012-02-07 2015-03-24 United Microelectronics Corp. Semiconductor process
US8860135B2 (en) 2012-02-21 2014-10-14 United Microelectronics Corp. Semiconductor structure having aluminum layer with high reflectivity
US9406567B1 (en) 2012-02-28 2016-08-02 Mie Fujitsu Semiconductor Limited Method for fabricating multiple transistor devices on a substrate with varying threshold voltages
US8860181B2 (en) 2012-03-07 2014-10-14 United Microelectronics Corp. Thin film resistor structure
CN103311281B (zh) * 2012-03-14 2016-03-30 中国科学院微电子研究所 半导体器件及其制造方法
US8863064B1 (en) 2012-03-23 2014-10-14 Suvolta, Inc. SRAM cell layout structure and devices therefrom
KR20130116099A (ko) * 2012-04-13 2013-10-23 삼성전자주식회사 반도체 장치 및 그 제조 방법
US8951855B2 (en) 2012-04-24 2015-02-10 United Microelectronics Corp. Manufacturing method for semiconductor device having metal gate
US8987080B2 (en) 2012-04-26 2015-03-24 Applied Materials, Inc. Methods for manufacturing metal gates
US9478627B2 (en) 2012-05-18 2016-10-25 United Microelectronics Corp. Semiconductor structure and process thereof
US9105623B2 (en) 2012-05-25 2015-08-11 United Microelectronics Corp. Semiconductor device having metal gate and manufacturing method thereof
US8836049B2 (en) 2012-06-13 2014-09-16 United Microelectronics Corp. Semiconductor structure and process thereof
US9299698B2 (en) 2012-06-27 2016-03-29 Mie Fujitsu Semiconductor Limited Semiconductor structure with multiple transistors having various threshold voltages
CN103531469B (zh) * 2012-07-02 2018-03-30 中芯国际集成电路制造(上海)有限公司 金属栅极晶体管的制作方法
US8501636B1 (en) 2012-07-24 2013-08-06 United Microelectronics Corp. Method for fabricating silicon dioxide layer
US8975666B2 (en) 2012-08-22 2015-03-10 United Microelectronics Corp. MOS transistor and process thereof
US8637955B1 (en) 2012-08-31 2014-01-28 Suvolta, Inc. Semiconductor structure with reduced junction leakage and method of fabrication thereof
US9112057B1 (en) 2012-09-18 2015-08-18 Mie Fujitsu Semiconductor Limited Semiconductor devices with dopant migration suppression and method of fabrication thereof
US9041126B2 (en) 2012-09-21 2015-05-26 Mie Fujitsu Semiconductor Limited Deeply depleted MOS transistors having a screening layer and methods thereof
US9431068B2 (en) 2012-10-31 2016-08-30 Mie Fujitsu Semiconductor Limited Dynamic random access memory (DRAM) with low variation transistor peripheral circuits
US8816754B1 (en) 2012-11-02 2014-08-26 Suvolta, Inc. Body bias circuits and methods
US9093997B1 (en) 2012-11-15 2015-07-28 Mie Fujitsu Semiconductor Limited Slew based process and bias monitors and related methods
US9054172B2 (en) 2012-12-05 2015-06-09 United Microelectrnics Corp. Semiconductor structure having contact plug and method of making the same
US9117878B2 (en) 2012-12-11 2015-08-25 United Microelectronics Corp. Method for manufacturing shallow trench isolation
US9070477B1 (en) 2012-12-12 2015-06-30 Mie Fujitsu Semiconductor Limited Bit interleaved low voltage static random access memory (SRAM) and related methods
US9112484B1 (en) 2012-12-20 2015-08-18 Mie Fujitsu Semiconductor Limited Integrated circuit process and bias monitors and related methods
US8735269B1 (en) 2013-01-15 2014-05-27 United Microelectronics Corp. Method for forming semiconductor structure having TiN layer
US9268885B1 (en) 2013-02-28 2016-02-23 Mie Fujitsu Semiconductor Limited Integrated circuit device methods and models with predicted device metric variations
US8994415B1 (en) 2013-03-01 2015-03-31 Suvolta, Inc. Multiple VDD clock buffer
US9129985B2 (en) 2013-03-05 2015-09-08 United Microelectronics Corp. Semiconductor device having metal gate and manufacturing method thereof
US8988153B1 (en) 2013-03-09 2015-03-24 Suvolta, Inc. Ring oscillator with NMOS or PMOS variation insensitivity
US9299801B1 (en) 2013-03-14 2016-03-29 Mie Fujitsu Semiconductor Limited Method for fabricating a transistor device with a tuned dopant profile
US9112495B1 (en) 2013-03-15 2015-08-18 Mie Fujitsu Semiconductor Limited Integrated circuit device body bias circuits and methods
US9449967B1 (en) 2013-03-15 2016-09-20 Fujitsu Semiconductor Limited Transistor array structure
US9653300B2 (en) 2013-04-16 2017-05-16 United Microelectronics Corp. Structure of metal gate structure and manufacturing method of the same
US9023708B2 (en) 2013-04-19 2015-05-05 United Microelectronics Corp. Method of forming semiconductor device
US9184254B2 (en) 2013-05-02 2015-11-10 United Microelectronics Corporation Field-effect transistor and fabricating method thereof
US9159798B2 (en) 2013-05-03 2015-10-13 United Microelectronics Corp. Replacement gate process and device manufactured using the same
US9196542B2 (en) 2013-05-22 2015-11-24 United Microelectronics Corp. Method for manufacturing semiconductor devices
US9478571B1 (en) 2013-05-24 2016-10-25 Mie Fujitsu Semiconductor Limited Buried channel deeply depleted channel transistor
US8921947B1 (en) 2013-06-10 2014-12-30 United Microelectronics Corp. Multi-metal gate semiconductor device having triple diameter metal opening
US9064814B2 (en) 2013-06-19 2015-06-23 United Microelectronics Corp. Semiconductor structure having metal gate and manufacturing method thereof
CN104299994B (zh) * 2013-07-16 2017-07-14 中芯国际集成电路制造(上海)有限公司 晶体管及晶体管的形成方法
CN104347418B (zh) * 2013-08-05 2019-11-01 中芯国际集成电路制造(上海)有限公司 Mos晶体管的形成方法
US8976575B1 (en) 2013-08-29 2015-03-10 Suvolta, Inc. SRAM performance monitor
US9384984B2 (en) 2013-09-03 2016-07-05 United Microelectronics Corp. Semiconductor structure and method of forming the same
US9245972B2 (en) 2013-09-03 2016-01-26 United Microelectronics Corp. Method for manufacturing semiconductor device
US9105720B2 (en) 2013-09-11 2015-08-11 United Microelectronics Corp. Semiconductor device having metal gate and manufacturing method thereof
US20150069534A1 (en) 2013-09-11 2015-03-12 United Microelectronics Corp. Semiconductor device and method for fabricating the same
US9196546B2 (en) 2013-09-13 2015-11-24 United Microelectronics Corp. Metal gate transistor
US9281201B2 (en) 2013-09-18 2016-03-08 United Microelectronics Corp. Method of manufacturing semiconductor device having metal gate
US8951884B1 (en) 2013-11-14 2015-02-10 United Microelectronics Corp. Method for forming a FinFET structure
US9219155B2 (en) 2013-12-16 2015-12-22 Intel Corporation Multi-threshold voltage devices and associated techniques and configurations
US9318490B2 (en) 2014-01-13 2016-04-19 United Microelectronics Corp. Semiconductor structure and manufacturing method thereof
US9231071B2 (en) 2014-02-24 2016-01-05 United Microelectronics Corp. Semiconductor structure and manufacturing method of the same
CN104979289B (zh) * 2014-04-04 2018-11-16 中芯国际集成电路制造(上海)有限公司 一种半导体器件及其制作方法
US9710006B2 (en) 2014-07-25 2017-07-18 Mie Fujitsu Semiconductor Limited Power up body bias circuits and methods
US9319013B2 (en) 2014-08-19 2016-04-19 Mie Fujitsu Semiconductor Limited Operational amplifier input offset correction with transistor threshold voltage adjustment
CN106601605B (zh) * 2015-10-19 2020-02-28 中芯国际集成电路制造(北京)有限公司 栅极堆叠结构、nmos器件、半导体装置及其制造方法
CN106601606B (zh) 2015-10-19 2019-09-20 中芯国际集成电路制造(上海)有限公司 Nmos器件、半导体装置及其制造方法
US9985031B2 (en) * 2016-01-21 2018-05-29 Taiwan Semiconductor Manufacturing Co., Ltd. Integrated circuit and manufacturing method thereof
CN107591369B (zh) * 2016-07-07 2020-05-08 中芯国际集成电路制造(上海)有限公司 半导体结构的形成方法
US11114347B2 (en) * 2017-06-30 2021-09-07 Taiwan Semiconductor Manufacturing Co., Ltd. Self-protective layer formed on high-k dielectric layers with different materials
CN111989762A (zh) 2018-04-19 2020-11-24 应用材料公司 经由气相沉积调谐p金属功函数膜的功函数
US10867864B2 (en) * 2018-09-27 2020-12-15 Taiwan Semiconductor Manufacturing Company, Ltd. Semiconductor device and method of manufacture

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060081939A1 (en) * 2004-09-10 2006-04-20 Yasushi Akasaka Semiconductor device having misfet using high dielectric constant gate insulation film and method for fabricating the same
US20070066077A1 (en) * 2005-09-22 2007-03-22 Yasushi Akasaka Method for manufacturing semiconductor device
US20080087966A1 (en) * 2006-10-16 2008-04-17 Sony Corporation Semiconductor device and method for manufacturing same

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7153784B2 (en) 2004-04-20 2006-12-26 Intel Corporation Method for making a semiconductor device having a high-k gate dielectric layer and a metal gate electrode
JP5326274B2 (ja) 2007-01-09 2013-10-30 ソニー株式会社 半導体装置および半導体装置の製造方法
US7915111B2 (en) * 2007-08-08 2011-03-29 Taiwan Semiconductor Manufacturing Company, Ltd. Semiconductor device with high-K/dual metal gate
US7964487B2 (en) * 2008-06-04 2011-06-21 International Business Machines Corporation Carrier mobility enhanced channel devices and method of manufacture
US7927943B2 (en) * 2008-09-12 2011-04-19 Taiwan Semiconductor Manufacturing Company, Ltd. Method for tuning a work function of high-k metal gate devices

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060081939A1 (en) * 2004-09-10 2006-04-20 Yasushi Akasaka Semiconductor device having misfet using high dielectric constant gate insulation film and method for fabricating the same
US20070066077A1 (en) * 2005-09-22 2007-03-22 Yasushi Akasaka Method for manufacturing semiconductor device
US20080087966A1 (en) * 2006-10-16 2008-04-17 Sony Corporation Semiconductor device and method for manufacturing same

Also Published As

Publication number Publication date
TW201025509A (en) 2010-07-01
CN101677087A (zh) 2010-03-24
CN101677087B (zh) 2012-02-01
US20100068877A1 (en) 2010-03-18
US20110059601A1 (en) 2011-03-10
US8105891B2 (en) 2012-01-31
US7927943B2 (en) 2011-04-19

Similar Documents

Publication Publication Date Title
TWI393220B (zh) 半導體元件之製法
US9601388B2 (en) Integrated high-K/metal gate in CMOS process flow
US7923321B2 (en) Method for gap filling in a gate last process
US7977181B2 (en) Method for gate height control in a gate last process
KR101639486B1 (ko) 다양한 폭을 갖는 게이트 구조를 포함하는 반도체 디바이스 구조물 및 그 형성 방법
TWI395296B (zh) 半導體裝置之製造方法
US9263445B2 (en) Method of fabricating dual high-k metal gates for MOS devices
US8357603B2 (en) Metal gate fill and method of making
US8093116B2 (en) Method for N/P patterning in a gate last process
TWI419264B (zh) 製造半導體裝置的方法
US8658525B2 (en) Methods for a gate replacement process
US7939392B2 (en) Method for gate height control in a gate last process
TWI463664B (zh) 積體電路裝置的製造方法
TWI600064B (zh) 半導體元件及其製作方法、以及半導體結構
US20100048013A1 (en) Novel high-k metal gate cmos patterning method
US11908749B2 (en) Method of metal gate formation and structures formed by the same
KR101700496B1 (ko) 일함수층 및/또는 차단/습윤층으로서 TiAlCN을 갖는 금속 게이트 스택

Legal Events

Date Code Title Description
MM4A Annulment or lapse of patent due to non-payment of fees