Nothing Special   »   [go: up one dir, main page]

CN106206714B - 半导体器件 - Google Patents

半导体器件 Download PDF

Info

Publication number
CN106206714B
CN106206714B CN201510216099.3A CN201510216099A CN106206714B CN 106206714 B CN106206714 B CN 106206714B CN 201510216099 A CN201510216099 A CN 201510216099A CN 106206714 B CN106206714 B CN 106206714B
Authority
CN
China
Prior art keywords
dielectric layer
layer
contact plug
semiconductor device
disposed
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
CN201510216099.3A
Other languages
English (en)
Other versions
CN106206714A (zh
Inventor
吕佳霖
陈俊隆
廖琨垣
张峰溢
陈界得
黄伟豪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
United Microelectronics Corp
Original Assignee
United Microelectronics Corp
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 United Microelectronics Corp filed Critical United Microelectronics Corp
Priority to CN201510216099.3A priority Critical patent/CN106206714B/zh
Priority to US14/723,467 priority patent/US9748349B2/en
Publication of CN106206714A publication Critical patent/CN106206714A/zh
Application granted granted Critical
Publication of CN106206714B publication Critical patent/CN106206714B/zh
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • H01L29/40Electrodes ; Multistep manufacturing processes therefor
    • H01L29/41Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
    • H01L29/423Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions not carrying the current to be rectified, amplified or switched
    • H01L29/42312Gate electrodes for field effect devices
    • H01L29/42316Gate electrodes for field effect devices for field-effect transistors
    • H01L29/4232Gate electrodes for field effect devices for field-effect transistors with insulated gate
    • H01L29/42364Gate electrodes for field effect devices for field-effect transistors with insulated gate characterised by the insulating layer, e.g. thickness or uniformity
    • 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
    • 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
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76801Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing
    • H01L21/76829Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers
    • H01L21/76831Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the dielectrics, e.g. smoothing characterised by the formation of thin functional dielectric layers, e.g. dielectric etch-stop, barrier, capping or liner layers in via holes or trenches, e.g. non-conductive sidewall liners
    • 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
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76838Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics characterised by the formation and the after-treatment of the conductors
    • H01L21/76895Local interconnects; Local pads, as exemplified by patent document EP0896365
    • 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
    • H01L21/71Manufacture of specific parts of devices defined in group H01L21/70
    • H01L21/768Applying interconnections to be used for carrying current between separate components within a device comprising conductors and dielectrics
    • H01L21/76897Formation of self-aligned vias or contact plugs, i.e. involving a lithographically uncritical step
    • 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
    • H01L29/41Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions
    • H01L29/417Electrodes ; Multistep manufacturing processes therefor characterised by their shape, relative sizes or dispositions carrying the current to be rectified, amplified or switched
    • H01L29/41725Source or drain electrodes for field effect devices
    • H01L29/41791Source or drain electrodes for field effect devices for transistors with a horizontal current flow in a vertical sidewall, 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
    • H01L29/40Electrodes ; 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
    • 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
    • H01L29/518Insulating materials associated therewith the insulating material containing nitrogen, e.g. nitride, oxynitride, nitrogen-doped material

Landscapes

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

Abstract

本发明公开一种半导体器件,其包含:基底、设于基底上的栅极结构、环绕栅极结构的层间介电层、设于层间介电层内的第一接触插塞、设于层间介电层上的第二介电层、设于第二介电层中并电连接第一接触插塞的第二接触插塞、以及设于第二接触插塞及第二介电层之间的侧壁子。

Description

半导体器件
技术领域
本发明涉及一种半导体器件(元件,device),尤其涉及一种于接触插塞与介电层之间设置侧壁子的半导体器件。
背景技术
近年来,随着场效晶体管(field effect transistor,FET)器件尺寸持续地缩小,已知的平面式(planar)场效晶体管器件的发展已面临制程(制造工艺,工艺,process)上的极限。为了克服制程限制,以非平面(non-planar)的场效晶体管器件例如鳍状场效晶体管(fin field effect transistor,Fin FET)器件来取代平面晶体管器件已成为目前的主流发展趋势。由于鳍状场效晶体管器件的立体结构可增加栅极与鳍状结构的接触面积,因此,可进一步增加栅极对于载流子信道(沟道)区域的控制,从而降低小尺寸器件面临的漏致势垒降低(drain induced barrier lowering,DIBL)效应,并可以抑制短沟道效应(shortchannel effect,SCE)。再者,由于鳍状场效晶体管器件在同样的栅极长度下会具有更宽的沟道宽度,因而可获得加倍的漏极驱动电流。甚至,晶体管器件的阈值电压(thresholdvoltage)亦可通过调整栅极的功函数而加以调控。
然而,在已知的鳍状场效晶体管器件制程中,结合金属栅极与接触插塞等器件的制程时仍因制程上的限制遇到一些瓶颈,例如相互连接的接触插塞常因接触孔形成的精准度不佳而向外突出,造成虎牙(tiger tooth)现象并影响器件的整体电性能表现。因此如何改良现有鳍状场效晶体管制程与架构即为现今一重要课题。
发明内容
本发明的较佳实施例公开一种半导体器件,其包含:基底、设于该基底上的栅极结构、环绕该栅极结构的层间介电层、设于该层间介电层内的第一接触插塞、设于该层间介电层上的第二介电层、设于该第二介电层中并电连接该第一接触插塞的第二接触插塞、以及设于该第二接触插塞及该第二介电层之间的侧壁子。
该半导体器件还可包含:设于该层间介电层上的第一介电层;设于该层间介电层及该第一介电层中的该第一接触插塞;设于该第一介电层上的停止层;以及设于该停止层及该第二介电层中的该第二接触插塞。
该第一介电层及该第二介电层可包含氧化硅。
该停止层可包含氮化硅。
该侧壁子可选自氧化硅、氮化硅、氮氧化硅及氮碳化硅。
本发明的另一实施例公开一种半导体器件,其包含:基底、设于该基底上的栅极结构、环绕该栅极结构的层间介电层、设于该层间介电层内的第一接触插塞、设于该层间介电层上的第二介电层、设于该第二介电层中并电连接该第一接触插塞和该栅极结构的第二接触插塞、以及设于该第二接触插塞及该第二介电层之间的侧壁子。
该半导体器件还可包含:设于该层间介电层上的第一介电层;设于该层间介电层及该第一介电层中的该第一接触插塞;设于该第一介电层上的停止层;以及设于该停止层、该第一介电层及该第二介电层中的该第二接触插塞。
该第一介电层及该第二介电层可包含氧化硅。
该停止层可包含氮化硅。
该侧壁子可选自氧化硅、氮化硅、氮氧化硅及氮碳化硅。
该半导体器件还可包含截头侧壁子,其设于该第二介电层中并设于该第一接触插塞及该栅极结构之间。
附图说明
图1至图3为本发明的较佳实施例的制作半导体器件的方法示意图。
图4至图7为本发明的另一实施例的制作半导体器件的制程示意图。
具体实施方式
请参照图1至图3,图1至图3为本发明的较佳实施例的制作半导体器件的方法示意图。如图1所示,首先提供基底12,例如硅基底或绝缘体上硅(硅覆绝缘)(SOI)基板,其上可定义有晶体管区,例如PMOS晶体管区或NMOS晶体管区。基底12上具有至少一鳍状结构14及一绝缘层(图未示出),其中鳍状结构14的底部被绝缘层例如氧化硅所包覆而形成浅沟槽隔离,且部分的鳍状结构14上另外分别设有多个(复数个)栅极结构16、18、20、22。需注意的是,本实施例虽以四个栅极结构为例,但栅极结构的数量并不局限于此,而是可视制程需求任意调整。
鳍状结构14的形成方式可以包括先形成图案化掩模(图未示出)于基底12上,再经过蚀刻制程,将图案化掩模的图案转移至基底12中。接着,对应于三栅极晶体管器件及双栅极鳍状晶体管器件结构特性的不同,可选择性去除或留下图案化掩模,并利用沉积、化学机械研磨(chemical mechanical polishing,CMP)及回蚀刻制程而形成环绕鳍状结构14底部的浅沟槽隔离。除此之外,鳍状结构14的形成方式还可以是先制作图案化硬掩模层(图未示出)于基底12上,并利用磊晶(外延)制程于被图案化硬掩模层暴露的基底12上生长出半导体层,此半导体层即可作为相对应的鳍状结构14。同样地,还可以选择性去除或留下图案化硬掩模层,并通过沉积、CMP及回蚀刻制程形成浅沟槽隔离以包覆住鳍状结构14的底部。另外,当基底12为绝缘体上硅(SOI)基板时,则可利用图案化掩模来蚀刻基底上的半导体层,并停止于此半导体层下方的底氧化层以形成鳍状结构,故可省略前述制作浅沟槽隔离的步骤。
栅极结构16、18、20、22的制作方式可依据制程需求以先栅极(gate first)制程、后栅极(gate last)制程之先栅极介电层(high-k first)制程以及后栅极制程之后栅极介电层(high-k last)制程等方式制作完成。以本实施例的先栅极介电层制程为例,可先于鳍状结构14上形成较佳包含高介电常数介电层与多晶硅材料所构成的虚置栅极(图未示出),然后于虚置栅极侧壁形成侧壁子24。接着于侧壁子24两侧的鳍状结构14和/或基底12中形成源极/漏极区域26及/或磊晶层28、选择性地于源极/漏极区域26及/或磊晶层的表面形成金属硅化物(图未示出)、形成接触孔蚀刻停止层30以覆盖虚置栅极,并形成层间介电层32于接触孔蚀刻停止层30上。
之后可进行金属栅极置换(replacement metal gate)制程,先平坦化部分的层间介电层32及接触孔蚀刻停止层30,并再将虚置栅极转换为金属栅极的栅极结构16、18、20、22。金属栅极置换制程可包括先进行选择性的干蚀刻或湿蚀刻制程,例如利用氨水(ammonium hydroxide,NH4OH)或氢氧化四甲铵(Tetramethylammonium Hydroxide,TMAH)等蚀刻溶液来去除虚置栅极中的多晶硅材料以于层间介电层32与侧壁子24中形成凹槽。之后形成至少包含U型功函数金属层34与低阻抗金属层36的导电层于该凹槽内,并再搭配进行平坦化制程使U型功函数金属层34与低阻抗金属层36的表面与层间介电层32表面齐平。其中,依先栅极介电层(high-k first)制程或后栅极介电层(high-k last)制程的不同,高介电常数介电层(图未示出)的剖面可为一字形或U字形。
在本实施例中,功函数金属层34较佳用以调整形成金属栅极的功函数,使其适用于N型晶体管(NMOS)或P型晶体管(PMOS)。若晶体管为N型晶体管,功函数金属层34可选用功函数为3.9电子伏特(eV)~4.3eV的金属材料,如铝化钛(TiAl)、铝化锆(ZrAl)、铝化钨(WAl)、铝化钽(TaAl)、铝化铪(HfAl)或TiAlC(碳化钛铝)等,但不以此为限;若晶体管为P型晶体管,功函数金属层34可选用功函数为4.8eV~5.2eV的金属材料,如氮化钛(TiN)、氮化钽(TaN)或碳化钽(TaC)等,但不以此为限。功函数金属层34与低阻抗金属层36之间可包含另一阻挡层(图未示出),其中阻挡层的材料可包括钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等材料。低阻抗金属层36则可选自铜(Cu)、铝(Al)、钨(W)、钛铝合金(TiAl)、钴钨磷化物(cobalt tungsten phosphide,CoWP)等低电阻材料或其组合。由于依据金属栅极置换制程将虚置栅极转换为金属栅极是本领域技术人员所熟知的技艺,在此不另加赘述。
形成栅极结构16、18、20、22后,可先形成第一介电层38于栅极结构16、18、20、22与层间介电层32上,然后利用光刻及蚀刻制程去除部分第一介电层38、部分层间介电层32及部分接触孔蚀刻停止层30以形成多个接触孔(图未示出)以暴露出磊晶层28。之后于各接触孔中填入所需的金属材料,例如包含钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等的阻挡层材料以及选自钨(W)、铜(Cu)、铝(Al)、钛铝合金(TiAl)、钴钨磷化物(cobalt tungstenphosphide,CoWP)等低电阻材料或其组合的低阻抗金属层,并搭配进行平坦化制程,例如以化学机械研磨去除部分金属材料以分别形成接触插塞40于各接触孔内并电连接相应的源极/漏极区域26。接着形成停止层42于第一介电层38与各接触插塞40上。在本实施例中,第一介电层38与停止层42较佳包含不同的材料,例如第一介电层38较佳包含氧化硅而停止层42包含氮化硅,但不局限于此。
如图2所示,然后形成第二介电层44于停止层42上,并再利用光刻及蚀刻制程去除部分第二介电层44以形成多个接触孔46于相应的接触插塞40上并暴露出停止层42的表面。接着进行例如原子层沉积(atomic layer deposition,ALD)制程以形成材料层于第二介电层44上并将其填入接触孔46内,然后利用蚀刻去除部分第二介电层44表面与部分停止层42表面的材料层以形成侧壁子48于接触孔46内。
随后如图3所示,进行另一接触插塞制程,例如先去除部分停止层42,然后于各接触孔46中填入所需的金属材料,例如包含钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等的阻挡层材料以及选自钨(W)、铜(Cu)、铝(Al)、钛铝合金(TiAl)、钴钨磷化物(cobalttungsten phosphide,CoWP)等低电阻材料或其组合的低阻抗金属层,并搭配进行平坦化制程,例如以化学机械研磨去除部分金属材料以分别形成接触插塞50于各接触孔46内并电连接接触插塞40。至此即完成本发明较佳实施例的半导体器件的制作。
又如图3所示,本发明另外公开一种半导体器件结构,其主要包含:基底12,设于基底12上的多个栅极结构16、18、20、22,环绕并切齐(齐平)于栅极结构16、18、20、22的层间介电层32,设于层间介电层32与栅极结构16、18、20、22上的第一介电层38,设于层间介电层32与第一介电层38中并切齐于第一介电层38的多个接触插塞40,设于第一介电层38上的停止层42,设于停止层42上的第二介电层44,设于停止层42与第二介电层44中并分别电连接底下相应的各接触插塞40的多个接触插塞50,以及设于接触插塞50及第二介电层44之间并位于停止层42上的侧壁子48。在本实施例中,第一介电层38与第二介电层44较佳由氧化硅所构成,停止层42较佳由氮化硅所构成,而侧壁子48则较佳包含不同于第二介电层44及停止层42的介电材料,例如可选自氧化硅、氮化硅、氮氧化硅及氮碳化硅,但侧壁子48亦可为包含钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等类似于前述的阻挡层的导电材料。
请继续参照图4至图7,图4至图7为本发明另一实施例的制作半导体器件的制程示意图。如图4所示,首先依据前述实施例中图1至图2的制程于基底12上形成包含U型功函数金属层34与低阻抗金属层36的栅极结构20、侧壁子24、源极/漏极区域26、磊晶层28、接触孔蚀刻停止层30及层间介电层32等元件。其中为了突显元件之间的关系,本实施例仅以一个栅极结构20为例进行说明,但在实际制程上栅极结构的数量并不局限于此,而可视制程需求任意调整。
然后于栅极结构20与层间介电层32上形成第一介电层38,形成接触插塞40于层间介电层32与第一介电层38中以电连接源极/漏极区域26,依序形成停止层42与第二介电层44于第一介电层38与接触插塞40上,以蚀刻去除部分第二介电层44以形成接触孔,并再形成侧壁子48于接触孔内。
接着形成掩模层,例如依序形成有机介电层(organic dielectric layer,ODL)52、含硅硬掩模与抗反射(silicon-containing hard mask bottom anti-reflectivecoating,SHB)层54以及图案化光刻胶56于第二介电层44与侧壁子48上,其中ODL 52较佳填满侧壁子48之间的接触孔。
然后如图5所示,先利用图案化光刻胶56为掩模进行蚀刻制程,去除部分SHB 54及部分ODL 52以暴露出栅极结构20上方的第二介电层44的表面,然后继续往下去除位于栅极结构20正上方的部分第二介电层44并停止于停止层42上,其中图案化光刻胶56与SHB 54可于去除部分第二介电层44时被消耗完,或者可选择性地以另一道蚀刻再完全移除图案化光刻胶56与SHB 54。在本实施例中,部分位于第二介电层44中且设于栅极结构20与接触插塞40之间的侧壁子48较佳于去除图案化光刻胶56的过程中被部分去除而形成截头侧壁子58,使其上表面略低于另一边的侧壁子48。
如图6所示,接着以ODL 52为掩模进行另一蚀刻制程,去除位于栅极结构20正上方的部分停止层42及部分第一介电层38并暴露出栅极结构20顶表面,其中截头侧壁子58较佳于此阶段的蚀刻制程中被再次蚀刻而使其高度再次降低。
随后如图7所示,进行灰化(ash)制程去除ODL 52,并利用另一道蚀刻制程去除接触插塞40正上方的部分停止层42,以形成开口(图未示出)且同时暴露出接触插塞40与栅极结构20的表面。接着于开口中填入所需的金属材料,例如包含钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等的阻挡层材料以及选自钨(W)、铜(Cu)、铝(Al)、钛铝合金(TiAl)、钴钨磷化物(cobalt tungsten phosphide,CoWP)等低电阻材料或其组合的低阻抗金属层,并搭配进行平坦化制程,例如以化学机械研磨去除部分金属材料以形成接触插塞60且同时电连接接触插塞40和栅极结构20。
如图7中所示,本发明另外公开一种半导体器件结构,其主要包含:基底12,设于基底12上的栅极结构20,环绕栅极结构20的层间介电层32,设于层间介电层32与栅极结构20上的第一介电层38,设于层间介电层32与第一介电层38中的接触插塞40,设于第一介电层38上的停止层42,设于停止层42上的第二介电层44,设于第一介电层38、停止层42与第二介电层44中并电连接底下的接触插塞40与栅极结构20的接触插塞60,设于接触插塞40与第二介电层44之间的侧壁子48,以及设于接触插塞40与栅极结构20之间的截头侧壁子58。在本实施例中,第一介电层38与第二介电层44较佳由氧化硅所构成,停止层42较佳由氮化硅所构成,而侧壁子48与截头侧壁子58则较佳选自氧化硅、氮化硅、氮氧化硅及氮碳化硅。但不局限于此,侧壁子48与截头侧壁子58亦可为包含钛(Ti)、氮化钛(TiN)、钽(Ta)、氮化钽(TaN)等类似于前述的阻挡层的导电材料。
需注意的是,本实施例的侧壁子较佳更细部包含侧壁子48与截头侧壁子58,其环绕接触插塞40正上方的接触插塞60,其中侧壁子48设于接触插塞40与第二介电层44之间且其顶表面约略切齐于第二介电层44的顶表面。截头侧壁子58则设于第二介电层44中以及接触插塞40与栅极结构20之间,其中截头侧壁子58的顶表面较佳设于第二介电层44的上下表面之间,甚至低于第二介电层44整体高度的二分之一。
此外,依据本发明的又一实施例,本发明又可于前述制程中选择完全去除截头侧壁子58,使位于第二介电层44中以及接触插塞40与栅极结构20之间的接触插塞60直接接触停止层42,或接触插塞40与栅极结构20之间不留下任何侧壁子,此实施例也属本发明所涵盖的范围。
综上所述,本发明主要于层间介电层与栅极结构上方的介电层与接触插塞之间设置侧壁子,其中接触插塞较佳电连接栅极结构两侧的源极/漏极区域。依据本发明较佳实施例,通过侧壁子的设置,或利用侧壁子来填补原本接触孔过大的缝隙,本发明可改善已知的制作接触插塞时因开口的精确度不佳而产生虎牙的问题。
以上所述仅为本发明的较佳实施例,凡依本发明权利要求所作的等同变化与修饰,皆应属于本发明的涵盖范围。
主要器件符号说明
12 基底 14 鳍状结构
16 栅极结构 18 栅极结构
20 栅极结构 22 栅极结构
24 侧壁子 26 源极/漏极区域
28 磊晶层 30 接触孔蚀刻停止层
32 层间介电层 34 功函数金属层
36 低阻抗金属层 38 第一介电层
40 接触插塞 42 停止层
44 第二介电层 46 接触孔
48 侧壁子 50 接触插塞
52 有机介电层 54 含硅硬掩模与抗反射层
56 图案化光刻胶 58 截头侧壁子
60 接触插塞

Claims (11)

1.一种半导体器件,包含:
基底;
设于该基底上的栅极结构;
环绕该栅极结构的层间介电层;
设于该层间介电层内的第一接触插塞;
设于该层间介电层上的第二介电层;
设于该层间介电层以及该第二介电层之间的停止层;
设于该第二介电层及该停止层中并电连接该第一接触插塞的第二接触插塞;以及
设于该第二接触插塞及该第二介电层之间并位于该停止层上的侧壁子。
2.如权利要求1所述的半导体器件,还包含:
设于该层间介电层及该停止层之间的第一介电层,其中,该第一接触插塞设于该层间介电层及该第一介电层中。
3.如权利要求2所述的半导体器件,其中该第一介电层及该第二介电层包含氧化硅。
4.如权利要求2所述的半导体器件,其中该停止层包含氮化硅。
5.如权利要求1所述的半导体器件,其中该侧壁子选自氧化硅、氮化硅、氮氧化硅及氮碳化硅。
6.一种半导体器件,包含:
基底;
设于该基底上的栅极结构;
环绕该栅极结构的层间介电层;
设于该层间介电层内的第一接触插塞;
设于该层间介电层上的第二介电层;
设于该层间介电层以及该第二介电层之间的停止层;
设于该第二介电层及该停止层中并电连接该第一接触插塞及该栅极结构的第二接触插塞;以及
设于该第二接触插塞及该第二介电层之间并位于该停止层上的侧壁子。
7.如权利要求6所述的半导体器件,还包含:
设于该层间介电层及该停止层之间的第一介电层,其中该第一接触插塞设于该层间介电层及该第一介电层中。
8.如权利要求7所述的半导体器件,其中该第一介电层及该第二介电层包含氧化硅。
9.如权利要求7所述的半导体器件,其中该停止层包含氮化硅。
10.如权利要求6所述的半导体器件,其中该侧壁子选自氧化硅、氮化硅、氮氧化硅及氮碳化硅。
11.如权利要求6所述的半导体器件,还包含截头侧壁子,其设于该第二介电层中并设于该第一接触插塞及该栅极结构之间。
CN201510216099.3A 2015-04-30 2015-04-30 半导体器件 Active CN106206714B (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201510216099.3A CN106206714B (zh) 2015-04-30 2015-04-30 半导体器件
US14/723,467 US9748349B2 (en) 2015-04-30 2015-05-28 Semiconductor device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510216099.3A CN106206714B (zh) 2015-04-30 2015-04-30 半导体器件

Publications (2)

Publication Number Publication Date
CN106206714A CN106206714A (zh) 2016-12-07
CN106206714B true CN106206714B (zh) 2020-06-30

Family

ID=57205186

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201510216099.3A Active CN106206714B (zh) 2015-04-30 2015-04-30 半导体器件

Country Status (2)

Country Link
US (1) US9748349B2 (zh)
CN (1) CN106206714B (zh)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102593707B1 (ko) * 2016-10-05 2023-10-25 삼성전자주식회사 반도체 장치
US10109523B2 (en) * 2016-11-29 2018-10-23 Taiwan Semiconductor Manufacturing Company, Ltd. Method of cleaning wafer after CMP
DE102017118475B4 (de) * 2016-11-29 2022-08-25 Taiwan Semiconductor Manufacturing Company, Ltd. Selbstjustierte abstandshalter und verfahren zu deren herstellung
US10510598B2 (en) 2016-11-29 2019-12-17 Taiwan Semiconductor Manufacturing Company, Ltd. Self-aligned spacers and method forming same
DE102017122702B4 (de) 2017-04-28 2023-11-09 Taiwan Semiconductor Manufacturing Co. Ltd. Struktur und Verfahren für FinFET-Vorrichtung mit asymmetrischem Kontakt

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101068018A (zh) * 2006-05-05 2007-11-07 台湾积体电路制造股份有限公司 半导体装置
CN104078445A (zh) * 2013-03-29 2014-10-01 联华电子股份有限公司 插塞结构及其制作工艺

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5960318A (en) * 1995-10-27 1999-09-28 Siemens Aktiengesellschaft Borderless contact etch process with sidewall spacer and selective isotropic etch process
KR100382738B1 (ko) * 2001-04-09 2003-05-09 삼성전자주식회사 반도체 소자의 메탈 컨택 형성 방법
KR100476710B1 (ko) * 2003-02-05 2005-03-16 매그나칩 반도체 유한회사 반도체 소자의 금속배선 형성방법
US7157782B1 (en) * 2004-02-17 2007-01-02 Altera Corporation Electrically-programmable transistor antifuses
DE102005052000B3 (de) * 2005-10-31 2007-07-05 Advanced Micro Devices, Inc., Sunnyvale Halbleiterbauelement mit einer Kontaktstruktur auf der Grundlage von Kupfer und Wolfram
JP2009105195A (ja) * 2007-10-23 2009-05-14 Elpida Memory Inc 半導体装置の構造および製造方法
JP2009158591A (ja) * 2007-12-25 2009-07-16 Nec Electronics Corp 半導体装置およびその製造方法
US7903444B2 (en) * 2008-06-26 2011-03-08 Chrong-Jung Lin One-time programmable memory and operating method thereof
US8395191B2 (en) * 2009-10-12 2013-03-12 Monolithic 3D Inc. Semiconductor device and structure
KR101051577B1 (ko) * 2009-06-30 2011-07-22 주식회사 하이닉스반도체 반도체 소자 및 그의 형성 방법
US8754498B2 (en) * 2009-10-27 2014-06-17 Taiwan Semiconductor Manufacturing Co., Ltd. Antifuse and method of making the antifuse
DE102010002451B4 (de) * 2010-02-26 2012-01-26 Globalfoundries Dresden Module One Limited Liability Company & Co. Kg Verfahren zur Herstellung von Kontaktelementen von Halbleiterbauelementen
US8426300B2 (en) * 2010-12-02 2013-04-23 International Business Machines Corporation Self-aligned contact for replacement gate devices
US8569810B2 (en) * 2010-12-07 2013-10-29 International Business Machines Corporation Metal semiconductor alloy contact with low resistance
US8716124B2 (en) * 2011-11-14 2014-05-06 Advanced Micro Devices Trench silicide and gate open with local interconnect with replacement gate process
US8872244B1 (en) * 2013-04-18 2014-10-28 International Business Machines Corporation Contact structure employing a self-aligned gate cap
US9029220B2 (en) * 2013-06-18 2015-05-12 Infineon Technologies Austria Ag Method of manufacturing a semiconductor device with self-aligned contact plugs and semiconductor device
US9147748B1 (en) * 2014-05-01 2015-09-29 Globalfoundries Inc. Methods of forming replacement spacer structures on semiconductor devices
KR102192848B1 (ko) * 2014-05-26 2020-12-21 삼성전자주식회사 메모리 장치
US9455254B2 (en) * 2014-11-07 2016-09-27 Globalfoundries Inc. Methods of forming a combined gate and source/drain contact structure and the resulting device
US9379209B2 (en) * 2014-11-07 2016-06-28 Globalfoundries Inc. Selectively forming a protective conductive cap on a metal gate electrode
US9390981B1 (en) * 2015-02-05 2016-07-12 Globalfoundries Inc. Method of forming a complementary metal oxide semiconductor structure with N-type and P-type field effect transistors having symmetric source/drain junctions and optional dual silicides

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101068018A (zh) * 2006-05-05 2007-11-07 台湾积体电路制造股份有限公司 半导体装置
CN104078445A (zh) * 2013-03-29 2014-10-01 联华电子股份有限公司 插塞结构及其制作工艺

Also Published As

Publication number Publication date
US20160322468A1 (en) 2016-11-03
CN106206714A (zh) 2016-12-07
US9748349B2 (en) 2017-08-29

Similar Documents

Publication Publication Date Title
US20220208615A1 (en) Dielectric Fins With Different Dielectric Constants and Sizes in Different Regions of a Semiconductor Device
CN105575885B (zh) 半导体元件及其制作方法
US9640535B2 (en) Method for forming source/drain contacts during CMOS integration using confined epitaxial growth techniques and the resulting semiconductor devices
US8609495B2 (en) Hybrid gate process for fabricating finfet device
CN106206270B (zh) 半导体器件及其制作方法
CN105762106B (zh) 半导体装置及其制作工艺
US8466027B2 (en) Silicide formation and associated devices
CN103165674B (zh) 具有多阈值电压的FinFET
KR20190002301A (ko) 금속 게이트 구조물 커팅 공정
CN105470293B (zh) 半导体元件及其制作方法
TWI650804B (zh) 半導體元件及其製作方法
CN106409764B (zh) 制作半导体元件的方法
CN114300363A (zh) 半导体元件及其制作方法
CN106206714B (zh) 半导体器件
US20230099320A1 (en) Method And Device For Forming Metal Gate Electrodes For Transistors
TWI649808B (zh) 半導體元件及其製作方法
CN110970366A (zh) 集成电路的制造方法
CN111769045A (zh) 半导体元件及其制作方法
CN113140514A (zh) 半导体装置与其制作方法
KR20190024530A (ko) 핀 전계 효과 트랜지스터 디바이스 및 방법
US20220238695A1 (en) Self-Aligned Source/Drain Metal Contacts and Formation Thereof
US20220223689A1 (en) Methods Of Forming Epitaxial Source/Drain Features In Semiconductor Devices
CN114078762B (zh) 半导体结构及其形成方法
TWI658513B (zh) 半導體元件及其製作方法
KR20240156277A (ko) 반도체 디바이스 구조물 및 이를 형성하는 방법

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant