Of Metal-silicide Layer (epo) Patents (Class 257/E21.296)
  • Publication number: 20090280583
    Abstract: A method of fabricating a semiconductor device according to one embodiment includes: forming a plurality of Si-based pattern portions above a semiconductor substrate, the plurality of Si-based pattern portions being adjacent in a direction substantially parallel to a surface of the semiconductor substrate via insulating films; forming a metal film above the plurality of Si-based pattern portions and the insulating films so as to contact with the plurality of Si-based pattern portions; processing whole areas or upper portions of the plurality of Si-based pattern portions into a plurality of silicide layers by a silicidation reaction between the plurality of Si-based pattern portions and the metal film by heat treatment; and removing the plurality of silicide layers formed above the insulating films by applying planarizing treatment to the plurality of silicide layers.
    Type: Application
    Filed: March 6, 2009
    Publication date: November 12, 2009
    Inventors: Shinichi HIRASAWA, Shinya Watanabe
  • Publication number: 20090280645
    Abstract: Provided is a method of fabricating a semiconductor device including a dual suicide process. The method may include sequentially siliciding and stressing a first MOS region, and sequentially siliciding and stressing a second MOS region after siliciding and stressing the first MOS region, the second MOS region being a different type than the first MOS region.
    Type: Application
    Filed: April 27, 2009
    Publication date: November 12, 2009
    Inventors: Jung-hoon Lee, Hong-jae Shin, Seo-woo Nam, Sae-il Son, Sang-doo Kim, Jung-deog Lee, Sang-wook Kwon
  • Publication number: 20090280641
    Abstract: An insulation layer may be formed on an object having a contact region. The insulation layer may be partially etched to form an opening exposing the contact region. A material layer including silicon and oxygen may be formed on the exposed contact region. A metal layer may be formed on the material layer including silicon and oxygen. The material layer including silicon and oxygen may be reacted with the metal layer to form a metal oxide silicide layer at least on the contact region. A conductive layer may be formed on the metal oxide silicide layer to fill up the opening.
    Type: Application
    Filed: May 7, 2009
    Publication date: November 12, 2009
    Inventors: Dae-Hyuk Kang, Young-Hoo Kim, Chang-Ki Hong, Kun-Tack Lee, Jae-Dong Lee, Dae-Hong Eom, Jeong-Nam Han
  • Publication number: 20090269923
    Abstract: A method and apparatus for processing a substrate is provided. The method of processing a substrate includes providing a substrate comprising a conductive material, performing a pre-treatment process on the conductive material, flowing a silicon based compound on the conductive material to form a silicide layer, performing a post treatment process on the silicide layer, and depositing a barrier dielectric layer on the substrate.
    Type: Application
    Filed: April 25, 2008
    Publication date: October 29, 2009
    Inventors: Sang M. Lee, Yong-Won Lee, Meiyee Shek, Li-Qun Xia, Derek R. Witty
  • Publication number: 20090261392
    Abstract: A solid-state imaging device is provided. The solid-state imaging device includes a pixel section, a peripheral circuit section, a silicide blocking layer formed in the pixel section except for part or whole of an area above an isolation portion in the pixel section, and a metal-silicided transistor formed in the peripheral circuit section.
    Type: Application
    Filed: April 17, 2009
    Publication date: October 22, 2009
    Applicant: SONY CORPORATION
    Inventor: Keiji Tatani
  • Publication number: 20090236676
    Abstract: The present invention in one embodiment provides a method of producing a device including providing a semiconducting device including a gate structure including a silicon containing gate conductor atop a substrate; forming a metal layer on at least the silicon containing gate conductor; and directing chemically inert ions to impact the metal layer, wherein momentum transfer from of the chemically inert ions force metal atoms from the metal layer into the silicon containing gate conductor to provide a silicide gate conductor.
    Type: Application
    Filed: March 20, 2008
    Publication date: September 24, 2009
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Huilong Zhu, Daewon Yang, Yanfeng Wang, Brian J. Greene
  • Patent number: 7585771
    Abstract: Method for manufacturing a semiconductor device, includes: forming a layer of dicobalt monosilicide (Co2Si) or of cobalt (Co) on a device-forming surface of a silicon substrate in a sputter apparatus, by utilizing a predetermined temperature profile; elevating a temperature of the silicon substrate to a predetermined temperature T2, which is equal to or higher than 600° C., conducted after forming the layer of Co or Co2Si; and forming a layer of monocobalt monosilicide (CoSi) on the device-forming surface of the silicon substrate at a temperature equal to or higher than T2, conducted after heating the silicon substrate to T2, wherein, the silicon substrate is elevated to a temperature between a highest reachable temperature T1 of the silicon substrate during forming the layer of Co or Co2Si and the temperature T2 at a temperature ramp rate of equal to or higher than 50° C./sec.
    Type: Grant
    Filed: April 24, 2006
    Date of Patent: September 8, 2009
    Assignee: NEC Electronics Corporation
    Inventors: Tomoko Matsuda, Takamasa Itou
  • Publication number: 20090221116
    Abstract: Element characteristics disadvantageously fluctuate because the composition of the resultant silicide varies according to the change of the gate length when a full silicide gate electrode is formed by sintering a metal/poly-Si structure. The element characteristics also fluctuate due to element-to-element non-uniformity of the resultant silicide composition. By first forming full silicide having a metal-rich composition, depositing a Si layer thereon, and sintering the combined structure, the metal in the metal-rich silicide diffuses into the Si layer, so that the Si layer is converted into silicide. The entire structure thus is converted into full silicide having a smaller metal composition ratio.
    Type: Application
    Filed: August 29, 2006
    Publication date: September 3, 2009
    Inventor: Takashi Hase
  • Publication number: 20090212330
    Abstract: A semiconductor device includes a semiconductive channel region and a gate region. The gate region has at least one buried part extending under the channel region. The buried part of the gate region is formed by forming a cavity under the channel region. That cavity is at least partial filled with silicon and a metal. An annealing step is performed so as to form a silicide of said metal in the cavity. The result is a totally silicided buried gate for the semiconductor device.
    Type: Application
    Filed: February 17, 2009
    Publication date: August 27, 2009
    Applicants: STMicroelectronics (Crolles 2) SAS, STMicroelectronics S.A.
    Inventors: Emilie Bernard, Bernard Guillaumot, Philippe Coronel
  • Patent number: 7534677
    Abstract: A method of fabricating a dual gate oxide of a semiconductor device includes forming a first gate insulation layer over an entire surface of a substrate, removing a portion of the first gate insulation layer to selectively expose a first region of the substrate using a first mask and performing an ion implantation on the selectively exposed first region of the substrate using the first mask, and forming a second gate insulation layer on the first gate insulation layer and the exposed first region of the substrate to form a resultant gate insulation layer having a first thickness over the first region of the substrate and a second thickness over a remaining region of the substrate, the first thickness and the second thickness being different.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyae-ryoung Lee, Su-gon Bae
  • Publication number: 20080280429
    Abstract: A method for depositing metals on surfaces is provided which comprises (a) providing a substrate (103) having a horizontal surface (107) and a vertical surface (105); (b) depositing a first metal layer (109) over the horizontal and vertical surfaces; (c) depositing a layer of polysilicon (111) over the horizontal and vertical surfaces; (d) treating the layer of polysilicon with a plasma such that a residue (113) remaining from the treatment is preferentially formed over the horizontal surfaces rather than the vertical surfaces, and wherein the residue is resistant to a first metal etch; and (e) exposing the substrate to the first metal etch.
    Type: Application
    Filed: May 11, 2007
    Publication date: November 13, 2008
    Inventors: Leo Mathew, Ross E. Noble, Raghaw S. Rai
  • Publication number: 20080224317
    Abstract: Highly thermally stable metal silicides and methods utilizing the metal silicides in semiconductor processing are provided. The metal silicides are preferably nickel silicides formed by the reaction of nickel with substitutionally carbon-doped single crystalline silicon which has about 2 atomic % or more substitutional carbon. Unexpectedly, the metal silicides are stable to temperatures of about 900° C. and higher and their sheet resistances are substantially unaffected by exposure to high temperatures. The metal silicides are compatible with subsequent high temperature processing steps, including reflow anneals of BPSG.
    Type: Application
    Filed: February 21, 2008
    Publication date: September 18, 2008
    Applicant: ASM America, Inc.
    Inventors: Vladimir Machkaoutsan, Ernst H.A. Granneman
  • Publication number: 20080173953
    Abstract: Structures and related methods including fully silicided regions are disclosed. In one embodiment, a structure includes a substrate; a partially silicided region located in an active region of an integrated circuit formed on the substrate; a fully silicided region located in a non-active region of the integrated circuit, and wherein the partially and fully silicided regions are formed from a common semiconductor layer.
    Type: Application
    Filed: January 18, 2007
    Publication date: July 24, 2008
    Inventors: Brent A. Anderson, Edward J. Nowak
  • Patent number: 7355255
    Abstract: The present invention provides a semiconductor device, a method of manufacture therefore and a method for manufacturing an integrated circuit including the same. The semiconductor device, among other elements, may include a substrate (110), as well as a nickel silicide region (170) located over the substrate (110), the nickel silicide region (170) having an amount of indium located therein.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: April 8, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: Peijun J. Chen, Duofeng Yue, Amitabh Jain, Sue E. Crank, Thomas D. Bonifield, Homi C. Mogul
  • Publication number: 20080073733
    Abstract: A semiconductor device includes a MIS transistor having a gate electrode which is fully silicided with metal. The edge parts of the gate electrode are lower in height than the other part thereof. Sidewall spacers are formed to cover the side and top surfaces of the edge parts of the gate electrode.
    Type: Application
    Filed: June 26, 2007
    Publication date: March 27, 2008
    Inventors: Chiaki Kudo, Yoshihiro Sato
  • Patent number: 7344985
    Abstract: The invention provides a semiconductor device, a method of manufacture therefore and a method for manufacturing an integrated circuit including the same. The semiconductor device, among other elements, may include a gate structure located over a substrate, the gate structure including a gate dielectric layer and gate electrode layer. The semiconductor device may further include source/drain regions located in/over the substrate and adjacent the gate structure, and a nickel alloy silicide located in the source/drain regions, the nickel alloy silicide having an amount of indium located therein.
    Type: Grant
    Filed: October 20, 2006
    Date of Patent: March 18, 2008
    Assignee: Texas Instruments Incorporated
    Inventors: Peijun J. Chen, Duofeng Yue, Amitabh Jain, Sue Crank, Thomas D. Bonifield, Homi Mogul
  • Publication number: 20080064194
    Abstract: A method for fabricating a flash memory device includes providing a semi-finished substrate including a first polysilicon layer electrically isolated by an isolation structure. Recesses are formed in the isolation structure to partially expose sidewalls of the first polysilicon layer. A second polysilicon layer is formed over the exposed first polysilicon layer. Recesses are formed in a portion of the isolation structure not covered by the second polysilicon layer. A dielectric structure is formed over a resultant surface profile obtained after the recesses are formed in the isolation structure. A control gate is formed over the dielectric structure.
    Type: Application
    Filed: June 28, 2007
    Publication date: March 13, 2008
    Applicant: Hynix Semiconductor Inc.
    Inventor: Dong-Gyun Hong
  • Patent number: 7338815
    Abstract: A semiconductor device manufacturing method, includes a step of forming refractory metal silicide layers 13a to 13c in a partial area of a semiconductor substrate 10, a step of forming an interlayer insulating film 21 on the refractory metal silicide layers 13a to 13c, a step of forming a first conductive film 31, a ferroelectric film 32, and a second conductive film 33 in sequence on the interlayer insulating film 21, a step of forming a capacitor Q consisting of a lower electrode 31a, a capacitor dielectric film 32a, and an upper electrode 33a by patterning the first conductive film 33, the ferroelectric film 32, and the second conductive film 31, and a step of performing an annealing for an annealing time to suppress a agglomeration area of the refractory metal silicide layers 13a to 13c within an upper limit area.
    Type: Grant
    Filed: September 27, 2005
    Date of Patent: March 4, 2008
    Assignee: Fujitsu Limited
    Inventors: Yukinobu Hikosaka, Hirotoshi Tachibana
  • Patent number: 7256123
    Abstract: In a semiconductor device using a polysilicon contact, such as a poly plug between a transistor and a capacitor in a container cell, an interface is provided where the poly plug would otherwise contact the bottom plate of the capacitor. The interface bars silicon from the plug from diffusing into the capacitor's dielectric. The interface can also include an oxygen barrier to prevent the poly plug from oxidizing during processing. Below the interface is a silicide layer to help enhance electrical contact with the poly plug. In a preferred method, the interface is created by selectively depositing a layer of titanium over a recessed poly plug to the exclusion of the surrounding oxide. The deposition process allows for silicidation of the titanium. The top half of the titanium silicide is then nitridized. A conformal ruthenium or ruthenium oxide layer is subsequently deposited, covering the titanium nitride and lining the sides and bottom of the container cell.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: August 14, 2007
    Assignee: Micron Technology, Inc.
    Inventors: Garo J. Derderian, Gurtej S. Sandhu
  • Patent number: 7208409
    Abstract: Fluorine containing regions (70) are formed in the source and drain regions (60) of the MOS transistor. A metal layer (90) is formed over the fluorine containing regions (70) and the source and drain regions (60). The metal layer is reacted with the underlying fluorine containing regions to form a metal silicide.
    Type: Grant
    Filed: March 7, 2005
    Date of Patent: April 24, 2007
    Assignee: Texas Instruments Incorporated
    Inventors: Jiong-Ping Lu, Duofeng Yue, Xiaozhan Liu, Donald S. Miles, Lance S. Robertson
  • Patent number: 7179702
    Abstract: A semiconductor device comprises a semiconductor substrate, an N-channel MISFET and a P-channel MISFET provided on the semiconductor substrate, each of the N- and P-channel MISFETs being isolated by an isolation region and having a gate insulating film, a first gate electrode film provided on the gate insulating film of the N-channel MISFET and composed of a first metal silicide, a second gate electrode film provided on the gate insulating film of the P-channel MISFET and composed of a second metal silicide made of a second metal material different from a first metal material composing the first metal silicide, and a work function of the first gate electrode film being lower than that of the second gate electrode film.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: February 20, 2007
    Assignee: Kabushiki Kaisha Toshiba
    Inventor: Kouji Matsuo
  • Patent number: 7105429
    Abstract: A method inhibits metal silicide encroachment in channel regions in a transistor that uses metal silicide as an electrical contact to its terminals. A metal layer is deposited overlying the transistor. A first anneal that is a low temperature anneal forms metal silicide regions to source, gate and drain terminals of the transistor. The low temperature inhibits lateral encroachment. Unsilicided portions of the metal are removed and followed by an ion implant of an element, such as nitrogen, that diffuses into the metal silicide regions. A second anneal at a higher temperature than the first anneal is completed wherein the implanted nitrogen ions prevent lateral encroachment of metal silicide.
    Type: Grant
    Filed: March 10, 2004
    Date of Patent: September 12, 2006
    Assignee: Freescale Semiconductor, Inc.
    Inventor: Dharmesh Jawarani
  • Publication number: 20060157863
    Abstract: A method used to form a cobalt metal layer on a silicon surface using an atomic layer deposition (ALD) process comprises a treatment of the silicon surface prior to cobalt formation. Treatment includes serial exposure to one or more cycles comprising a titanium nitride precursor or a tantalum nitride precursor, followed by an optional exposure to ammonia. After this treatment, the silicon surface is exposed to a metal organic cobalt such as cyclopentadienylcobalt dicarbonyl to form a cobalt precursor on the silicon surface, which is then exposed to hydrogen or ammonia to reduce the precursor to an ALD cobalt metal layer. Once this initial metal layer is formed, additional cobalt ALD layers may be completed to form a cobalt metal layer of a desired thickness.
    Type: Application
    Filed: January 19, 2005
    Publication date: July 20, 2006
    Inventor: Eugene Marsh