CN112447845B - 一种半导体器件的制作方法和半导体器件 - Google Patents

一种半导体器件的制作方法和半导体器件 Download PDF

Info

Publication number
CN112447845B
CN112447845B CN201910832790.2A CN201910832790A CN112447845B CN 112447845 B CN112447845 B CN 112447845B CN 201910832790 A CN201910832790 A CN 201910832790A CN 112447845 B CN112447845 B CN 112447845B
Authority
CN
China
Prior art keywords
ion implantation
source
drain
semiconductor substrate
region
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
CN201910832790.2A
Other languages
English (en)
Other versions
CN112447845A (zh
Inventor
梁旦业
汪广羊
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.)
CSMC Technologies Fab2 Co Ltd
Original Assignee
CSMC Technologies Fab2 Co Ltd
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 CSMC Technologies Fab2 Co Ltd filed Critical CSMC Technologies Fab2 Co Ltd
Priority to CN201910832790.2A priority Critical patent/CN112447845B/zh
Priority to PCT/CN2020/105703 priority patent/WO2021042916A1/zh
Publication of CN112447845A publication Critical patent/CN112447845A/zh
Application granted granted Critical
Publication of CN112447845B publication Critical patent/CN112447845B/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
    • H01L29/66Types 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
    • H01L29/7833Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's
    • H01L29/7834Field effect transistors with field effect produced by an insulated gate with lightly doped drain or source extension, e.g. LDD MOSFET's; DDD MOSFET's with a non-planar structure, e.g. the gate or the source or the drain being non-planar
    • 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
    • H01L21/0445Manufacture 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 crystalline silicon carbide
    • H01L21/0455Making n or p doped regions or layers, e.g. using diffusion
    • H01L21/046Making n or p doped regions or layers, e.g. using diffusion using ion implantation
    • 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
    • H01L21/26Bombardment with radiation
    • H01L21/263Bombardment with radiation with high-energy radiation
    • H01L21/265Bombardment with radiation with high-energy radiation producing ion implantation
    • 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
    • H01L21/26Bombardment with radiation
    • H01L21/263Bombardment with radiation with high-energy radiation
    • H01L21/265Bombardment with radiation with high-energy radiation producing ion implantation
    • H01L21/26506Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors
    • H01L21/26513Bombardment with radiation with high-energy radiation producing ion implantation in group IV semiconductors of electrically active species
    • 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
    • H01L21/26Bombardment with radiation
    • H01L21/263Bombardment with radiation with high-energy radiation
    • H01L21/265Bombardment with radiation with high-energy radiation producing ion implantation
    • H01L21/2654Bombardment with radiation with high-energy radiation producing ion implantation in AIIIBV compounds
    • H01L21/26546Bombardment with radiation with high-energy radiation producing ion implantation in AIIIBV compounds of electrically active species
    • 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
    • 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
    • H01L29/08Semiconductor 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 carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
    • 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
    • H01L29/08Semiconductor 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 carrying current to be rectified, amplified or switched and such electrode being part of a semiconductor device which comprises three or more electrodes
    • H01L29/0843Source or drain regions of field-effect devices
    • H01L29/0847Source or drain regions of field-effect devices of field-effect transistors with insulated gate
    • 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
    • H01L29/66053Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide
    • H01L29/66068Multistep manufacturing processes of devices having a semiconductor body comprising crystalline silicon carbide 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
    • 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
    • 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
    • H01L29/66522Unipolar field-effect transistors with an insulated gate, i.e. MISFET with an active layer made of a group 13/15 material
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • General Physics & Mathematics (AREA)
  • Computer Hardware Design (AREA)
  • Ceramic Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Health & Medical Sciences (AREA)
  • Toxicology (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Insulated Gate Type Field-Effect Transistor (AREA)

Abstract

本发明提供一种半导体器件的制作方法和半导体器件,所述制作方法包括:提供半导体衬底,在所述半导体衬底上形成有栅极结构;执行轻掺杂源漏离子注入工艺,以在所述栅极结构两侧的所述半导体衬底中形成轻掺杂源漏区;执行袋区离子注入,以在所述轻掺杂源漏区底部形成袋型离子注入区;执行源漏离子注入,以在所述栅极两侧的所述半导体衬底中形成源漏区,其中,所述轻掺杂源漏区、所述袋型离子注入区和所述源漏区共同构成在所述栅极结构下方具有倾斜的形貌的源漏极。根据本发明的在半导体器件的制作方法和半导体器件相同的面积下,能拥有更高的电流能力(传输线脉冲测试的电流能力),因而比常规工艺制作的具有较高的鲁棒性。

Description

一种半导体器件的制作方法和半导体器件
技术领域
本发明涉及半导体制造领域,具体而言涉及一种半导体器件的制作方法和半导体器件。
背景技术
GGNMOS(GateGroundedNMOS)是常用的ESD防护器件,典型的GGNMOS器件如图1所示,其包括半导体衬底100,在半导体衬底100中形成有P阱101和N阱102,其中GGNMOS器件形成在P阱101中,在半导体衬底100上形成有栅极结构103,在栅极结构103两侧的半导体衬底100中还形成有源极104和漏极105,其中栅极结构103和源极104和衬底的引出端106一起构成GGNMOS器件的阳极,漏极105单独引出作为阴极,在衬底引出端106和源极104、漏极105之间分别设置有隔离结构107。当ESD浪涌出现在阳极时,漏极105和衬底中的P阱101组成的二极管反偏,浪涌达到一定大小会使该二极管发生雪崩击穿,产生的雪崩电流流过P阱101,由于P阱具备电阻,产生压降;当产生的压降超过源极104和P阱101之间的二极管的开启电压,会使该二极管正偏。这样,NMOS管的寄生NPN开启,泄放ESD电流,直到浪涌消失,从而起到静电保护的效果。
为满足ESD(Electro-StaticDischarge,静电释放)鲁棒性(robustness,过ESD电流能力)设计的要求,通常需要比普通器件大十倍甚至几十倍的layout(版图)面积;此外,GGNMOS在BCD(Bi-polarCMOSDMOS)工艺上面流片,为了工艺兼容性和节约掩模版(mask)资源,不会特别增加有益于提高ESD保护能力的注入层次。一种典型的形成上述GGNMOS器件的方法包括:提供P型半导体衬底;在所述半导体衬底上形成P型阱区,在所述P型阱区上方形成栅极结构;执行N型源漏离子注入以形成位于栅极结构两侧的半导体衬底中的源漏极;在所述半导体衬底上形成通孔,所述通孔用以填充导电材料以将所述源漏极和所述栅极结构接电引出;执行ESD离子注入,以在所述源漏极下方形成P型离子注入区,从而降低NMOS漏极与P型阱区之间的击穿电压。当ESD现象发生在NMOS器件的漏极时,漏极接触孔下面的PN结首先被击穿,静电放电电流便会由该PN结界面泄放掉,因此该NMOS器件漏极不会因为静电尖端放电的现象而被静电损伤。但是,源漏极的形成过程中,为防止电流集中在表面,采用包含倾斜离子注入的源漏离子注入,形成的源漏极在栅极结构下方的具有较垂直的形貌,以增大导电面积,如图1B所示,使得源漏极底部的电流路径(如图1B中P2所示)较大,大于源漏极表面的电流路径(如图1B中P1所示),使得静电放电时电流更容易集中表面,单位面积过电流保护能力较低。
因此,有必要提供一种新的半导体器件的制造方法和半导体器件,用以解决现有技术中的问题。
发明内容
在发明内容部分中引入了一系列简化形式的概念,这将在具体实施方式部分中进一步详细说明。本发明的发明内容部分并不意味着要试图限定出所要求保护的技术方案的关键特征和必要技术特征,更不意味着试图确定所要求保护的技术方案的保护范围。
本发明提供了一种半导体器件的制作方法,包括:
提供半导体衬底,在所述半导体衬底上形成有栅极结构;
执行轻掺杂源漏离子注入工艺,以在所述栅极结构两侧的所述半导体衬底中形成轻掺杂源漏区;
执行袋区离子注入工艺,以在所述轻掺杂源漏区底部形成袋型离子注入区;
执行源漏离子注入工艺,以在所述栅极两侧的所述半导体衬底中形成源漏区,其中,所述轻掺杂源漏区、所述袋型离子注入区和所述源漏区共同构成在所述栅极结构下方具有倾斜的形貌的源漏极。
示例性地,所述源漏离子注入工艺为垂直离子注入。
示例性地,在所述执行袋区离子注入工艺之后所述执行源漏离子注入工艺之前,还包括在所述栅极结构两侧形成间隙壁的结构。
示例性地,所述轻掺杂源漏离子注入工艺注入的能量范围为45-60KeV,注入的剂量范围为1-2E13cm-3
示例性地,所述袋区离子注入工艺为倾斜离子注入。
示例性地,所述袋区离子注入工艺注入的能量范围为45-60KeV,注入的剂量范围为3-5E12cm-3
示例性地,所述轻掺杂源漏离子注入工艺和所述袋区离子注入工艺在同一图案化的掩膜下进行离子注入。
示例性地,所述半导体衬底为P型半导体衬底,所述半导体器件为GGNMOS器件。
本发明还提供了一种半导体器件,采用上任意一项所述的制作方法制作。
根据本发明的半导体器件的制作方法和半导体器件,在源漏极所述栅极结构下方具有倾斜的形貌,从而使源漏极底部的电流路径更短,使更大比例的电流从源漏极底部流过,表面电流更不容易集中而达到电流峰值,当出现热击穿时,需要更高的过电流。因此在相同的面积下,能拥有更高的电流能力,因而具有高的鲁棒性。
附图说明
本发明的下列附图在此作为本发明的一部分用于理解本发明。附图中示出了本发明的实施例及其描述,用来解释本发明的原理。
附图中:
图1A和图1B为一种GGNMOS器件的结构示意图;
图2A-图2E为根据本发明的一个实施例的半导体器件的制作方法和半导体器件中形成的器件的结构示意图;
图3为根据本发明的一个实施例的半导体器件的制作方法的流程图。
具体实施方式
在下文的描述中,给出了大量具体的细节以便提供对本发明更为彻底的理解。然而,对于本领域技术人员而言显而易见的是,本发明可以无需一个或多个这些细节而得以实施。在其他的例子中,为了避免与本发明发生混淆,对于本领域公知的一些技术特征未进行描述。
为了彻底理解本发明,将在下列的描述中提出详细的描述,以说明本发明的一种老年生活垃圾填埋场晚期渗滤液处理方法和装置。显然,本发明的施行并不限于半导体制造领域的技术人员所熟习的特殊细节。本发明的较佳实施例详细描述如下,然而除了这些详细描述外,本发明还可以具有其他实施方式。
应予以注意的是,这里所使用的术语仅是为了描述具体实施例,而非意图限制根据本发明的示例性实施例。如在这里所使用的,除非上下文另外明确指出,否则单数形式也意图包括复数形式。此外,还应当理解的是,当在本说明书中使用术语“包含”和/或“包括”时,其指明存在所述特征、整体、步骤、操作、元件和/或组件,但不排除存在或附加一个或多个其他特征、整体、步骤、操作、元件、组件和/或它们的组合。
现在,将参照附图更详细地描述根据本发明的示例性实施例。然而,这些示例性实施例可以多种不同的形式来实施,并且不应当被解释为只限于这里所阐述的实施例。应当理解的是,提供这些实施例是为了使得本发明的公开彻底且完整,并且将这些示例性实施例的构思充分传达给本领域普通技术人员。在附图中,为了清楚起见,夸大了层和区域的厚度,并且使用相同的附图标记表示相同的元件,因而将省略对它们的描述。
实施例一
为了解决现有技术中的问题,本发明提供了半导体器件的制作方法和半导体器件,包括:
提供半导体衬底,在所述半导体衬底上形成有栅极结构;
执行轻掺杂源漏离子注入工艺,以在所述栅极结构两侧的所述半导体衬底中形成轻掺杂源漏区;
执行袋区离子注入,以在所述轻掺杂源漏区底部形成袋型离子注入区;
执行源漏离子注入,以在所述栅极两侧的所述半导体衬底中形成源漏区,其中,所述轻掺杂源漏区、所述袋型离子注入区和所述源漏区共同构成在所述栅极结构下方具有倾斜的形貌的源漏极。
下面参考图2A-图2E和图3对根据一种半导体器件的制作方法进行示例性说明,其中图2A-图2E为根据本发明的一个实施例的半导体器件的制作过程中形成的器件的结构示意图;图3为根据本发明的一个实施例的半导体器件的制作方法的流程图。
首先参看图3,执行步骤S1:提供半导体衬底,在所述半导体衬底上形成有栅极结构。
如图2A所示,提供半导体衬底200,在半导体衬底200上形成有栅极结构,栅极结构包括栅介电层201和栅极材料层202。
示例性地,半导体衬底200可以是以下所提到的材料中的至少一种:Si、Ge、SiGe、SiC、SiGeC、InAs、GaAs、InP、InGaAs或者其它III/V化合物半导体,还包括这些半导体构成的多层结构等,或者为绝缘体上硅(SOI)、绝缘体上层叠硅(SSOI)、绝缘体上层叠锗化硅(S-SiGeOI)、绝缘体上锗化硅(SiGeOI)以及绝缘体上锗(GeOI)等。
根据本发明的一个示例,形成的半导体器件为GGNMOS器件,提供的半导体衬底为P型半导体衬底。示例性地,P型半导体衬底可以是通过离子注入或者扩散工艺形成的具有P型阱区的衬底。示例性地,P型半导体衬底还可以是通过离子掺杂气相外延等工艺形成在半导体衬底上的掺杂层。
在本实施例中,P型半导体衬底为通过扩散工艺形成在Si衬底中的P型掺杂的离子阱,掺杂浓度为1×1014/cm3~2×1014/cm3
示例性地,在半导体衬底上形成栅极结构的步骤包括:通执行热氧化工艺在所述半导体衬底表面形成热氧化层;执行化学气象沉积工艺在所述半导体衬底表面形成多晶硅材料层;最所述热氧化层和所述多晶硅材料层执行图案化工艺以形成所述栅介电层201和栅极材料层202。
需要理解的是,上述在半导体衬底200表面形成栅极结构的方法仅仅是示例性地,任何形成栅极结构的方法均适用于本发明。
在根据本发明的一个示例中,在半导体衬底200中还形成有N型掺杂的离子阱,隔离结构等本领域技术人员所熟知的结构,在此不再赘述。
接着,继续参看图3,执行步骤S2:执行轻掺杂源漏离子注入工艺,以在所述栅极结构两侧的所述半导体衬底中形成轻掺杂源漏区。
如图2B所示,执行轻掺杂源漏(LDD)离子注入工艺后,在栅极结构两侧的半导体衬底200中形成轻掺杂源区204和轻掺杂漏区203。一方面抑制热电子效应,另一方面为高浓度的源漏区掺杂提供扩散缓冲层。
示例性地,所述执行轻掺杂源漏离子注入工艺的步骤包括,在所述半导体衬底上形成图案化的掩膜以露出拟形成源漏区的区域;执行轻掺杂源漏离子注入,以在所述半导体衬底中所述拟形成源漏区的区域中形成轻掺杂源漏离子注入区。其中,形成所述图案化的掩膜的过程包括形成沉积或涂覆形成光刻胶层,执行光刻工艺形成所述图案化的掩膜。上述过程为本领域技术人员所熟知的过程,在此不再赘述。
在根据本发明的示例中,所述半导体衬底为P型半导体衬底,所述轻掺杂源漏离子注入工艺为N型掺杂。示例性地,所述轻掺杂源漏离子注入工艺注入的离子为P离子,注入的能量范围为45-60KeV,注入的剂量范围为1-2E13cm-3。在根据本发明的一个示例中,所述轻掺杂源漏离子注入工艺为P离子注入,注入能量为50KeV,注入剂量为1.5E13cm-3
接着,继续参看图3,执行步骤S3:执行袋区离子注入,以在所述轻掺杂源漏区底部形成袋型离子注入区。
如图2C所示,执行袋区(pocket或halo)离子注入工艺之后,在半导体衬底200中形成分别位于轻掺杂源区204和轻掺杂漏区203下方的靠近所述栅极结构一侧的袋型(pocket或halo)离子注入区205。
在根据本发明的示例中,所述半导体衬底为P型半导体衬底,所述轻掺杂源漏离子注入工艺为P型掺杂。在形成源漏极之前形成袋型注入区,可以在后续形成源漏极之后改变半导体衬底中局部掺杂浓度,避免因为半导体器件尺寸的减小带来源漏区贯通而使器件失去栅控制性。
示例性地,所述执行袋区离子注入工艺的步骤包括,在所述半导体衬底上形成图案化的掩膜以露出拟形成源漏区的区域;执行袋区离子注入,以在所述半导体衬底中所述拟形成源漏区的区域中形成袋型离子注入区。其中,形成所述图案化的掩膜的过程包括形成沉积或涂覆形成光刻胶层,执行光刻工艺形成所述图案化的掩膜。上述过程为本领域技术人员所熟知的过程,在此不再赘述。
在根据本发明的一个示例中,上述步骤S2中的轻掺杂离子注入和本步骤S3中的袋区离子注入由于都是向源漏区执行离子注入,可以使用同一道掩膜版以及同一掩膜,节省光刻版的同时节省工艺步骤。
示例性地,所述袋区离子注入工艺为倾斜离子注入,所述P型掺杂为B离子注入,注入的能量范围为45-60KeV,注入的剂量范围为3-5E12cm-3。在根据本发明的一个示例中,所述袋区离子注入工艺为B离子注入,倾斜角度为45°,注入能量为50KeV,注入剂量为4E12cm-3
接着,继续参看图3,执行步骤S4:执行源漏离子注入,以在所述栅极两侧的所述半导体衬底中形成源漏区。
示例性地,在形成所述源漏极之前在所述栅极结构两侧形成间隙壁。
如图2D所示,在执行源漏离子注入之前,在栅极结构两侧形成间隙壁206。间隙壁206避免后续重掺杂的源漏离子注入进入到栅极结构下方的沟道区域,抑制热电子效应。
示例性地,所述间隙壁可以采用氮化硅、氧化硅或者氮氧化硅等介质材料。
示例性地,形成所述间隙壁的步骤包括:首先,在所述半导体衬底上工程机形成氮化硅层,接着,在所述氮化硅层上形成图案化的掩膜层;接着,以所述图案化的研磨层为掩膜,对所述氮化硅层进行刻蚀,以露出所述半导体衬底和栅极结构,形成如图2D所示的间隙壁206。
形成间隙壁后,执行源漏离子注入工艺,形成源漏区。继续参看图2D,执行离子注入工艺后形成源区208和漏区207。
根据本发明,形成的轻掺杂源漏区、袋型离子注入区和源漏区共同构成源漏极,由于袋型离子注入区位于半导体衬底中轻掺杂源漏区底部靠近栅极结构的一侧,阻止了垂直离子注入形成的源漏区的横向扩展,使得最终形成的源漏极在栅极结构下方具有倾斜的形貌。如图2E所示,漏极209在栅极结构下方具有倾斜的形貌,在后期静电放电过程中,漏极底部的电流路径(如图2E中P2所示)较小,漏极底部的串联电阻较小,使得静电放电更多的电流通过漏极底部流通,此时,表面电流更不容易集中而达到电流峰值,因此在相同的面积下,需要更高的ESD脉冲才能使表面处达到热击穿使器件失效,具体表现为更高的电流能力,具有高的鲁棒性。
示例性地,所述源漏离子注入工艺为垂直离子注入工艺。所述半导体衬底为P型半导体衬底,所述源漏离子注入工艺为N型掺杂。由于源漏离子注入工艺采用垂直离子注入工艺,而略去传统工艺中的倾斜离子注入工艺,使得源漏区深度减小,最终形成的源漏极位于栅极下方的区域具有倾斜的形貌,如图2E所示,静电放电过程中,漏极底部的电流路径(如图2E中P2所示)小于表面电流路径(如图2E中P1所示),即在ESD静电保护过程中,漏极表面电阻大,底部电阻小,从而静电放电更多的电流通过漏极底部流通,增加漏极底部的导电面积,减少漏极表面的导电面积,使得表面电流更不容易集中而达到电流峰值。同时,根据本发明,由于仅仅采用垂直离子注入工艺,而略去倾斜离子注入工艺,减少了工艺步骤,进一步节省了工艺成本。
在根据本发明的一个示例中,示例性地,所述源漏离子注入工艺为As离子注入,注入能量为2KeV,注入剂量为5E14cm-3。在根据本发明的一个示例中,执行多次垂直离子注入以形成所述源漏区。
示例性地,所述执行源漏离子注入工艺的步骤包括,在所述半导体衬底上形成图案化的掩膜以露出拟形成源漏区的区域;执行源漏离子注入,以在所述半导体衬底中所述拟形成源漏区的区域中形成源漏区。其中,形成所述图案化的掩膜的过程包括形成沉积或涂覆形成光刻胶层,执行光刻工艺形成所述图案化的掩膜。上述过程为本领域技术人员所熟知的过程,在此不再赘述。
在根据本发明的一个示例中,上述步骤S2中的轻掺杂离子注入和本步骤S3中的袋区离子注入由于都是向源漏区执行离子注入,可以使用同一道掩膜版,节省光刻版。
在根据本发明的一个示例中,本步骤S4中的源漏离子注入与上述步骤S2中的轻掺杂离子注入和步骤S3中的袋区离子注入由于都是向源漏区执行离子注入,可以使用同一道掩膜版,节省工艺步骤。
至此,已经对根据本发明的一种半导体器件的制造方法进行了示例性说明。在根据本发明的一个实例中,还包括在所述半导体衬底表面形成介质层,在所述介质层中形成接触通孔,以及在所述接触通孔中填充金属材料以将所述栅极结构所述源漏极电接出等步骤。根据本发明,通过在半导体器件中形成由所述轻掺杂源漏区、所述袋型离子注入区和所述源漏区共同构成的在所述栅极结构下方具有倾斜的形貌的源漏极,使得在静电放电过程中,漏极底部的电流路径较小,漏极底部的串联电阻较小,从而使静电放电中更多的电流通过漏极底部流通,此时,表面电流更不容易集中而达到电流峰值,因此在相同的面积下,需要更高的ESD脉冲才能使表面处达到热击穿使器件失效,具体表现为更高的电流能力,因而具有高的鲁棒性。
实施例二
本发明还提供了一种半导体器件,采用如实施例一所述的方法制造,包括半导体衬底、位于所述半导体衬底上的栅极结构,位于所述栅极结构两侧的所述半导体衬底中的源漏极,所述源漏极由轻掺杂源漏区、袋型离子注入区和源漏区共同构成,在所述栅极结构下方具有倾斜的形貌。
示例性地,所述半导体衬底为P型半导体衬底,所述半导体器件为GGNMOS器件。
由于源漏极在所述栅极结构下方具有倾斜的形貌的源漏极,使得在静电放电过程中,漏极底部的电流路径较小,从而使静电放电中更多的电流通过漏极底部流通,此时,表面电流更不容易集中而达到电流峰值,因此在相同的面积下,能拥有更高的电流能力,具有高的鲁棒性。
本发明已经通过上述实施例进行了说明,但应当理解的是,上述实施例只是用于举例和说明的目的,而非意在将本发明限制于所描述的实施例范围内。此外本领域技术人员可以理解的是,本发明并不局限于上述实施例,根据本发明的教导还可以做出更多种的变型和修改,这些变型和修改均落在本发明所要求保护的范围以内。本发明的保护范围由附属的权利要求书及其等效范围所界定。

Claims (9)

1.一种半导体器件的制作方法,所述半导体器件为GGNMOS器件,其特征在于,包括:
提供半导体衬底,在所述半导体衬底上形成有栅极结构;
执行轻掺杂源漏离子注入工艺,以在所述栅极结构两侧的所述半导体衬底中形成轻掺杂源漏区;
执行袋区离子注入工艺,以在所述轻掺杂源漏区底部形成袋型离子注入区;
执行源漏离子注入工艺,以在所述栅极两侧的所述半导体衬底中形成源漏区,其中,所述轻掺杂源漏区、所述袋型离子注入区和所述源漏区共同构成在所述栅极结构下方具有倾斜的形貌的源漏极,所述源漏极的表面电阻大,底部电阻小,在静电放电过程中,漏极底部的电流路径小于表面电流路径。
2.如权利要求1所述的制作方法,其特征在于,所述源漏离子注入工艺为垂直离子注入。
3.如权利要求1所述的制作方法,其特征在于,在所述执行袋区离子注入工艺之后所述执行源漏离子注入工艺之前,还包括在所述栅极结构两侧形成间隙壁的结构。
4.如权利要求1所述的制作方法,其特征在于,所述轻掺杂源漏离子注入工艺注入的能量范围为45-60KeV,注入的剂量范围为1-2E13cm-3
5.如权利要求1所述的制作方法,其特征在于,所述袋区离子注入工艺为倾斜离子注入。
6.如权利要求1所述的制作方法,其特征在于,所述袋区离子注入工艺注入的能量范围为45-60KeV,注入的剂量范围为3-5E12cm-3
7.如权利要求1所述的制作方法,其特征在于,所述轻掺杂源漏离子注入工艺和所述袋区离子注入工艺在同一图案化的掩膜下进行离子注入。
8.如权利要求1所述的制作方法,其特征在于,所述半导体衬底为P型半导体衬底。
9.一种半导体器件,其特征在于,采用如权利要求1所述的制作方法制作。
CN201910832790.2A 2019-09-04 2019-09-04 一种半导体器件的制作方法和半导体器件 Active CN112447845B (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN201910832790.2A CN112447845B (zh) 2019-09-04 2019-09-04 一种半导体器件的制作方法和半导体器件
PCT/CN2020/105703 WO2021042916A1 (zh) 2019-09-04 2020-07-30 一种半导体器件的制作方法和半导体器件

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910832790.2A CN112447845B (zh) 2019-09-04 2019-09-04 一种半导体器件的制作方法和半导体器件

Publications (2)

Publication Number Publication Date
CN112447845A CN112447845A (zh) 2021-03-05
CN112447845B true CN112447845B (zh) 2022-06-24

Family

ID=74734746

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910832790.2A Active CN112447845B (zh) 2019-09-04 2019-09-04 一种半导体器件的制作方法和半导体器件

Country Status (2)

Country Link
CN (1) CN112447845B (zh)
WO (1) WO2021042916A1 (zh)

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6211024B1 (en) * 2000-02-01 2001-04-03 Taiwan Semiconductor Manufacturing Company Method for forming a semiconductor device by using multiple ion implantation sequence to reduce crystal defects and to allow the reduction of the temperature used for a subsequent rapid thermal anneal procedure
US6452236B1 (en) * 2001-05-31 2002-09-17 Texas Instruments, Incorporated Channel implant for improving NMOS ESD robustness
US6822297B2 (en) * 2001-06-07 2004-11-23 Texas Instruments Incorporated Additional n-type LDD/pocket implant for improving short-channel NMOS ESD robustness
US6500739B1 (en) * 2001-06-14 2002-12-31 Taiwan Semiconductor Manufacturing Company Formation of an indium retrograde profile via antimony ion implantation to improve NMOS short channel effect
TW502452B (en) * 2001-07-13 2002-09-11 Macronix Int Co Ltd Manufacturing method of MOS transistor
KR20050108197A (ko) * 2004-05-12 2005-11-16 주식회사 하이닉스반도체 엔모스 트랜지스터 형성방법
US20060113591A1 (en) * 2004-11-30 2006-06-01 Chih-Hao Wan High performance CMOS devices and methods for making same
KR100709830B1 (ko) * 2005-02-14 2007-04-23 주식회사 케이이씨 정전기 방전 보호 소자 및 그 제조 방법
CN103187276B (zh) * 2011-12-27 2016-01-06 中芯国际集成电路制造(上海)有限公司 n型MOS场效应管及形成方法,半导体器件及形成方法
CN103943504A (zh) * 2013-01-22 2014-07-23 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备方法
CN106024629A (zh) * 2015-03-30 2016-10-12 台湾积体电路制造股份有限公司 具有掺杂分布的半导体晶体管器件

Also Published As

Publication number Publication date
CN112447845A (zh) 2021-03-05
WO2021042916A1 (zh) 2021-03-11

Similar Documents

Publication Publication Date Title
US9136350B2 (en) RF LDMOS device and fabrication method thereof
US20150187749A1 (en) Silicon-controlled rectifier electrostatic discharge protection device and method for forming the same
US20080135970A1 (en) High Voltage Shottky Diodes
JP2008078654A (ja) 半導体素子及びその製造方法
US8395188B2 (en) Silicon-germanium heterojunction bipolar transistor
CN111092112B (zh) Mos场效应晶体管及其制造方法
KR20160012459A (ko) 반도체 소자 및 그 제조 방법
US8476672B2 (en) Electrostatic discharge protection device and method for fabricating the same
US20140199818A1 (en) Method for fabricating an esd protection device
US10217828B1 (en) Transistors with field plates on fully depleted silicon-on-insulator platform and method of making the same
KR101461798B1 (ko) 베이스 저항 튜닝 영역을 갖는 집적 회로 구조 및 그 형성 방법
KR20190090270A (ko) 반도체 소자 및 그 제조 방법
CN112447845B (zh) 一种半导体器件的制作方法和半导体器件
US20120161235A1 (en) Electrostatic discharge protection device and manufacturing method thereof
US20110215403A1 (en) High Voltage Metal Oxide Semiconductor Device and Method for Making Same
US9281304B2 (en) Transistor assisted ESD diode
US20090057770A1 (en) Semiconductor device and method of fabricating the same
CN111192871B (zh) 用于静电防护的晶体管结构及其制造方法
US20180308836A1 (en) Electrostatic discharge protection device and method for electrostatic discharge
CN110518010B (zh) 一种内嵌硅控整流器的pmos器件及其实现方法
CN110957218B (zh) 半导体元器件的制造方法及半导体元器件
JP2009266868A (ja) Mosfetおよびmosfetの製造方法
CN113066855B (zh) 一种集成抗辐射高压soi器件及其制造方法
TWI798825B (zh) 半導體元件的製造方法
CN111463286B (zh) N管io组件及其制造方法

Legal Events

Date Code Title Description
PB01 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