公开(公告)号：US06720258B2

公开(公告)日：2004-04-13

申请号：US10319313

申请日：2002-12-12

申请人： Jer-shen Maa ,  Douglas J. Tweet ,  Yoshi Ono ,  Fengyan Zhang ,  Sheng Teng Hsu

发明人： Jer-shen Maa ,  Douglas J. Tweet ,  Yoshi Ono ,  Fengyan Zhang ,  Sheng Teng Hsu

IPC分类号： H01L2144

CPC分类号： H01L21/28518 ,  H01L29/456

摘要： An integrated circuit device, and a method of manufacturing the same, comprises an epitaxial nickel silicide on (100) Si, or a stable nickel silicide on amorphous Si, fabricated with a cobalt interlayer. In one embodiment the method comprises depositing a cobalt (Co) interface layer between the Ni and Si layers prior to the silicidation reaction. The cobalt interlayer regulates the flux of the Ni atoms through the cobalt/nickel/silicon alloy layer formed from the reaction of the cobalt interlayer with the nickel and the silicon so that the Ni atoms reach the Si interface at a similar rate, i.e., without any orientation preference, so as to form a uniform layer of nickel silicide. The nickel silicide may be annealed to form a uniform crystalline nickel disilicide. Accordingly, a single crystal nickel silicide on (100) Si or on amorphous Si is achieved wherein the nickel silicide has improved stability and may be utilized in ultra-shallow junction devices.

摘要翻译： 集成电路器件及其制造方法包括在（100）Si上的外延硅化镍，或者由钴中间层制造的在非晶Si上的稳定的硅化镍。 在一个实施方案中，该方法包括在硅化反应之前在Ni和Si层之间沉积钴（Co）界面层。 钴中间层通过由钴中间层与镍和硅的反应形成的钴/镍/硅合金层调节Ni原子的通量，使得Ni原子以相似的速率到达Si界面，即没有 任何取向偏好，从而形成均匀的硅化镍层。 可以将镍硅化物退火以形成均匀的结晶二硅化镍。 因此，实现了（100）Si或非晶Si上的单晶硅化镍，其中硅化镍具有改进的稳定性并可用于超浅结结器件中。

公开(公告)号：US06468901B1

公开(公告)日：2002-10-22

申请号：US09847873

申请日：2001-05-02

申请人： Jer-shen Maa ,  Yoshi Ono ,  Fengyan Zhang

发明人： Jer-shen Maa ,  Yoshi Ono ,  Fengyan Zhang

IPC分类号： H01L2144

CPC分类号： H01L21/28518

摘要： An integrated circuit device, and a method of manufacturing the same, including nickel silicide on a silicon substrate fabricated with an iridium interlayer. In one embodiment the method comprises depositing an iridium (Ir) interface layer between the Ni and Si layers prior to the silicidation reaction. The thermal stability is much improved by adding the thin iridium layer. This is shown by the low junction leakage current of the ultra-shallow junction, and by the low sheet resistance of the silicide, even after annealing at 850° C.

摘要翻译： 一种集成电路器件及其制造方法，包括用铱中间层制造的硅衬底上的硅化镍。 在一个实施方案中，该方法包括在硅化反应之前在Ni和Si层之间沉积铱（Ir）界面层。 通过添加薄铱层，热稳定性大大提高。 即使在850℃退火之后，超浅结的低结漏电流和硅化物的薄片电阻也被示出。

公开(公告)号：US06534871B2

公开(公告)日：2003-03-18

申请号：US09855391

申请日：2001-05-14

申请人： Jer-shen Maa ,  Douglas J. Tweet ,  Yoshi Ono ,  Fengyan Zhang ,  Sheng Teng Hsu

发明人： Jer-shen Maa ,  Douglas J. Tweet ,  Yoshi Ono ,  Fengyan Zhang ,  Sheng Teng Hsu

IPC分类号： H01L2348

CPC分类号： H01L21/28518 ,  H01L29/456

摘要： An integrated circuit device, and a method of manufacturing the same, comprises an epitaxial nickel silicide on (100) Si, or a stable nickel silicide on amorphous Si, fabricated with a cobalt interlayer. In one embodiment the method comprises depositing a cobalt (Co) interface layer between the Ni and Si layers prior to the silicidation reaction. The cobalt interlayer regulates the flux of the Ni atoms through the cobalt/nickel/silicon alloy layer formed from the reaction of the cobalt interlayer with the nickel and the silicon so that the Ni atoms reach the Si interface at a similar rate, i.e., without any orientation preference, so as to form a uniform layer of nickel silicide. The nickel silicide may be annealed to form a uniform crystalline nickel disilicide. Accordingly, a single crystal nickel silicide on (100) Si or on amorphous Si is achieved wherein the nickel silicide has improved stability and may be utilized in ultra-shallow junction devices.

公开(公告)号：US06780700B2

公开(公告)日：2004-08-24

申请号：US10035503

申请日：2001-10-25

申请人： Katsuji Iguchi ,  Sheng Teng Hsu ,  Yoshi Ono ,  Jer-shen Maa

发明人： Katsuji Iguchi ,  Sheng Teng Hsu ,  Yoshi Ono ,  Jer-shen Maa

IPC分类号： H01L218238

CPC分类号： H01L21/823814

摘要： A method of forming a MOS or CMOS device on a silicon substrate, includes preparing a substrate to contain conductive regions having device active areas therein; forming a gate electrode on the active areas; depositing and forming a gate electrode sidewall insulator layer on each gate electrode; implanting ions of a first type to form a source region and a drain region in one active area and implanting ions of a second type to form a source region and a drain region in the other active area.

摘要翻译： 一种在硅衬底上形成MOS器件或CMOS器件的方法，包括制备衬底以包含其中具有器件有源区的导电区; 在有源区上形成栅电极; 在每个栅电极上沉积和形成栅电极侧壁绝缘体层; 注入第一类型的离子以在一个有效区域中形成源极区域和漏极区域，并且注入第二类型的离子，以在另一个有源区域中形成源极区域和漏极区域。

公开(公告)号：US06682995B2

公开(公告)日：2004-01-27

申请号：US10317742

申请日：2002-12-11

申请人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

发明人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

IPC分类号： H01L213205

CPC分类号： H01L29/456 ,  H01L21/28291 ,  H01L28/55 ,  H01L28/65

摘要： A conductive barrier, useful as a ferroelectric capacitor electrode, having high temperature stability has been provided. This conductive barrier permits the use of iridium (Ir) metal in IC processes involving annealing. Separating silicon substrate from Ir film with an intervening, adjacent, tantalum (Ta) film has been found to very effective in suppressing diffusion between layers. The Ir prevents the interdiffusion of oxygen into the silicon during annealing. A Ta or TaN layer prevents the diffusion of Ir into the silicon. This Ir/TaN structure protects the silicon interface so that adhesion, conductance, hillock, and peeling problems are minimized. The use of Ti overlying the Ir/TaN structure also helps prevent hillock formation during annealing. A method of forming a multilayer Ir conductive structure and Ir ferroelectric electrode are also provided.

摘要翻译： 已经提供了具有高温稳定性的导电阻挡层，其可用作铁电电容器电极。 该导电屏障允许在涉及退火的IC工艺中使用铱（Ir）金属。 已经发现，分离硅衬底与Ir膜与中间相邻的钽（Ta）膜非常有效地抑制层之间的扩散。 Ir防止退火过程中氧进入硅的相互扩散。 Ta或TaN层防止Ir扩散到硅中。 这种Ir / TaN结构保护了硅界面，从而使粘附，电导，小丘和剥离问题最小化。 使用覆盖Ir / TaN结构的Ti也有助于防止退火过程中的小丘形成。 还提供了形成多层Ir导电结构和Ir铁电电极的方法。

公开(公告)号：US06190963B1

公开(公告)日：2001-02-20

申请号：US09316661

申请日：1999-05-21

申请人： Fengyan Zhang ,  Sheng Teng Hsu ,  Jer-shen Maa ,  Wei-Wei Zhuang

发明人： Fengyan Zhang ,  Sheng Teng Hsu ,  Jer-shen Maa ,  Wei-Wei Zhuang

IPC分类号： H01L218242

CPC分类号： H01L28/75 ,  H01L21/28568 ,  H01L28/55

摘要： An Ir—M—O composite film has been provided that is useful in forming an electrode of a ferroelectric capacitor, where M includes a variety of refractory metals. The Ir combination film is resistant to high temperature annealing in oxygen environments. When used with an underlying barrier layer made from the same variety of M transition metals, the resulting conductive barrier also suppresses to diffusion of Ir into any underlying Si substrates. As a result, Ir silicide products are not formed, which degrade the electrode interface characteristics. That is, the Ir combination film remains conductive, not peeling or forming hillocks, during high temperature annealing processes, even in oxygen. The Ir—M—O conductive electrode/barrier structures are useful in nonvolatile FeRAM devices, DRAMs, capacitors, pyroelectric infrared sensors, optical displays, optical switches, piezoelectric transducers, and surface acoustic wave devices. A method for forming an Ir—M—O composite film barrier layer and an Ir—M—O composite film ferroelectric electrode are also provided.

摘要翻译： 已经提供了可用于形成铁电电容器的电极的Ir-M-O复合膜，其中M包括各种难熔金属。 Ir组合膜在氧气环境中耐高温退火。 当与由相同种类的M过渡金属制成的底层阻挡层一起使用时，所得到的导电屏障还抑制Ir扩散到任何下面的Si衬底中。 结果，不形成铱硅化物产物，这降低了电极界面的特性。 也就是说，即使在氧气中，Ir组合膜在高温退火过程中仍保持导电性，不会剥离或形成小丘。 Ir-M-O导电电极/屏障结构可用于非易失性FeRAM器件，DRAM，电容器，热释电红外传感器，光学显示器，光开关，压电换能器和表面声波器件。 还提供了形成Ir-M-O复合膜阻挡层和Ir-M-O复合膜铁电电极的方法。

公开(公告)号：US06555456B2

公开(公告)日：2003-04-29

申请号：US10037192

申请日：2001-11-09

申请人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

发明人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

IPC分类号： H01L213205

CPC分类号： H01L29/456 ,  H01L21/28291 ,  H01L28/55 ,  H01L28/65

摘要： A conductive barrier, useful as a ferroelectric capacitor electrode, having high temperature stability has been provided. This conductive barrier permits the use of iridium (Ir) metal in IC processes involving annealing. Separating silicon substrate from Ir film with an intervening, adjacent, tantalum (Ta) film has been found to very effective in suppressing diffusion between layers. The Ir prevents the interdiffusion of oxygen into the silicon during annealing. A Ta or TaN layer prevents the diffusion of Ir into the silicon. This Ir/TaN structure protects the silicon interface so that adhesion, conductance, hillock, and peeling problems are minimized. The use of Ti overlying the Ir/TaN structure also helps prevent hillock formation during annealing. A method of forming a multilayer Ir conductive structure and Ir ferroelectric electrode are also provided.

公开(公告)号：US06350699B1

公开(公告)日：2002-02-26

申请号：US09584407

申请日：2000-05-30

申请人： Jer-shen Maa ,  Fengyan Zhang

发明人： Jer-shen Maa ,  Fengyan Zhang

IPC分类号： H01L2100

CPC分类号： H01L21/32136 ,  C23F4/00

摘要： A method of anisotropically etching metals, especially iridium, platinum, ruthenium, osmium, and rhenium using a non-chlorofluorocarbon, fluorine-based chemistry. A substrate having metal deposited thereon, is inserted into an ECR plasma etch chamber and heated. A fluorine containing gas, such as, carbon tetrafluoride (CF4), nitrogen trifluoride (NF3) or sulfur hexafluoride (SF6) is introduced into the chamber and ionized to form a plasma. Fluorine ions within the plasma strike, or contact, the metal to form volatile metal-fluorine compounds. The metal-fluorine compounds are exhausted away from the substrate to reduce, or eliminate, redeposition of etch reactants.

摘要翻译： 使用非氯氟烃氟基化学物质各向异性蚀刻金属，特别是铱，铂，钌，锇和铼的方法。 将其上沉积有金属的衬底插入到ECR等离子体蚀刻室中并加热。 将四氟化碳（CF 4），三氟化氮（NF 3）或六氟化硫（SF 6）等含氟气体引入室内并离子化形成等离子体。 等离子体内的氟离子冲击，或接触金属，形成挥发性金属氟化合物。 金属 - 氟化合物从衬底排出，以减少或消除蚀刻反应物的再沉积。

公开(公告)号：US06585821B1

公开(公告)日：2003-07-01

申请号：US10345636

申请日：2003-01-15

申请人： Wei-Wei Zhuang ,  Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

发明人： Wei-Wei Zhuang ,  Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

IPC分类号： C23C1616

CPC分类号： H01L21/02197 ,  C01G21/00 ,  C01P2002/86 ,  H01L21/02112 ,  H01L21/02175 ,  H01L21/02282 ,  H01L21/31604 ,  H01L21/31691

摘要： A method of monitoring the synthesis of a PGO spin-coating precursor solution includes monitoring heating of the solution with a UV spectrometer and terminating the heating step when a solution property reaches a predetermined value. The method utilizes the starting materials of lead acetate trihydrate (Pb(OAc)2.3H2O) and germanium alkoxide (Ge(OR)4 (R=C2H5 and CH(CH3)2)). The organic solvent is di(ethylene glycol)ethyl ether. The mixed solution of lead and di(ethylene glycol)ethyl ether is heated in an atmosphere of air at a temperature no greater than 190° C., and preferably no greater than 185° C. for a time period in a range of approximately eighty-five minutes. During the heating step the solution properties are monitored to determine when the reaction is complete and when decomposition of the desired product begins to take place. The solution is then added to germanium di(ethylene glycol)ethyl ether to make the PGO spin-coating solution. This second step also entails heating the solution to a temperature no greater than 190° C. for a time period in a range of 0.5 to 2.0 hours. This heating step is also monitored with a UV spectrometer to determine when the heating step should be terminated. The process results in a PGO precursor solution suitable for use in spin-coating.

摘要翻译： 监测PGO旋涂前体溶液合成的方法包括用UV光谱仪监测溶液的加热，并且当溶液性能达到预定值时终止加热步骤。 该方法采用醋酸铅三水合物（Pb（OAc）2.3H2O）和烷氧基锗（Ge（OR）4（R = C2H5和CH（CH3）2））的原料。 有机溶剂是二（乙二醇）乙醚。 将铅和二（乙二醇）乙醚的混合溶液在不大于190℃，优选不大于185℃的空气气氛中加热约80℃的时间 -5分钟。 在加热步骤期间，监测溶液性质以确定反应何时完成，并且当所需产物的分解开始发生时。 然后将该溶液加入到二（乙二醇）二乙醚中以制备PGO旋涂溶液。 该第二步骤还需要将溶液加热至不高于190℃的温度，持续0.5至2.0小时的时间。 该加热步骤也用UV光谱仪监测，以确定加热步骤何时终止。 该方法产生适合用于旋涂的PGO前体溶液。

公开(公告)号：US06479304B1

公开(公告)日：2002-11-12

申请号：US09717993

申请日：2000-11-21

申请人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

发明人： Fengyan Zhang ,  Jer-shen Maa ,  Sheng Teng Hsu

IPC分类号： H01L2100

CPC分类号： H01L28/75 ,  H01L21/28291 ,  H01L28/55 ,  H01L29/516

摘要： An Ir combination film has been provided that is useful in forming an electrode of a ferroelectric capacitor. The combination film includes tantalum and oxygen, as well as iridium. The Ir combination film effectively prevents oxygen diffusion, and is resistant to high temperature annealing in oxygen environments. When used with an underlying Ta or TaN layer, the resulting conductive barrier also suppresses to diffusion of Ir into any underlying Si substrates. As a result, Ir silicide products are not formed, which degrade the electrode interface characteristics. That is, the Ir combination film remains conductive, not peeling or forming hillocks, during high temperature annealing processes, even in oxygen. A method for forming an Ir composite film barrier layer and Ir composite film ferroelectric electrode are also provided.

摘要翻译： 已经提供了可用于形成铁电电容器的电极的Ir组合膜。 组合膜包括钽和氧，以及铱。 Ir组合膜有效防止氧气扩散，并且在氧气环境中耐高温退火。 当与下面的Ta或TaN层一起使用时，所得到的导电屏障还抑制Ir扩散到任何下面的Si衬底中。 结果，不形成铱硅化物产物，这降低了电极界面的特性。 也就是说，即使在氧气中，Ir组合膜在高温退火过程中仍保持导电性，不会剥离或形成小丘。 还提供了形成Ir复合膜阻挡层和Ir复合膜铁电电极的方法。