Sequential deposition and anneal of a dielectic layer in a charge trapping memory device
    21.
    发明申请
    Sequential deposition and anneal of a dielectic layer in a charge trapping memory device 有权
    在电荷俘获存储器件中的介电层的顺序沉积和退火

    公开(公告)号:US20090243001A1

    公开(公告)日:2009-10-01

    申请号:US12080166

    申请日:2008-03-31

    IPC分类号: H01L29/00 H01L21/31

    CPC分类号: H01L21/28282 H01L21/3145

    摘要: Deposition and anneal operations are iterated to break a deposition into a number of sequential deposition-anneal operations to reach a desired annealed dielectric layer thickness. In one particular embodiment, a two step anneal is performed including an NH3 or ND3 ambient followed by an N2O or NO ambient. In one embodiment, such a method is employed to form a dielectric layer having a stoichiometry attainable with only a deposition process but with a uniform material quality uncharacteristically high of a deposition process. In particular embodiments, sequential deposition-anneal operations provide an annealed first dielectric layer upon which a second dielectric layer may be left substantially non-annealed.

    摘要翻译: 重复沉积和退火操作以将沉积破坏成多个顺序的沉积退火操作以达到期望的退火介电层厚度。 在一个具体实施方案中,进行包括NH 3或ND 3环境,随后是N 2 O或NO环境的两步退火。 在一个实施例中,采用这种方法形成具有仅通过沉积工艺可获得的化学计量但具有均匀材料质量的电介质层,这在沉积过程中具有非常高的特性。 在特定实施例中,顺序沉积 - 退火操作提供退火的第一介电层,第二介电层可以在其上基本上保持不退火。

    Semiconductor structure having alignment marks with shallow trench isolation
    23.
    发明授权
    Semiconductor structure having alignment marks with shallow trench isolation 有权
    半导体结构具有浅沟槽隔离的对准标记

    公开(公告)号:US07192839B1

    公开(公告)日:2007-03-20

    申请号:US10848638

    申请日:2004-05-19

    IPC分类号: H01L23/544

    摘要: A semiconductor structure including a semiconductor substrate, an isolation trench in the semiconductor substrate, and an alignment trench in the semiconductor substrate is disclosed. The structure also includes a dielectric layer and a metallic layer. The dielectric layer is on the semiconductor substrate and in both the isolation trench and the alignment trench. The dielectric layer fills the isolation trench and does not fill the alignment trench. The metallic layer is on the dielectric layer.

    摘要翻译: 公开了一种包括半导体衬底,半导体衬底中的隔离沟槽和半导体衬底中的对准沟槽的半导体结构。 该结构还包括电介质层和金属层。 介电层位于半导体衬底上并且在隔离沟槽和对准沟槽中。 电介质层填充隔离沟槽并且不填充对准沟槽。 金属层位于电介质层上。

    SONOS structure including a deuterated oxide-silicon interface and method for making the same
    24.
    发明授权
    SONOS structure including a deuterated oxide-silicon interface and method for making the same 有权
    SONOS结构包括氘代氧化硅界面及其制造方法

    公开(公告)号:US07042054B1

    公开(公告)日:2006-05-09

    申请号:US10740205

    申请日:2003-12-18

    摘要: A method for processing a semiconductor topography is provided, which includes diffusing deuterium across one or more interfaces of a silicon-oxide-nitride-oxide-silicon (SONOS) structure. In particular, the method may include diffusing deuterium across one or more interfaces of a SONOS structure during a reflow of a dielectric layer spaced above the SONOS structure. In some embodiments, the method may include forming a deutereated nitride layer above the SONOS structure prior to the reflow process. In addition or alternatively, the method may include forming a deutereated nitride layer within the SONOS structure prior to the reflow process. In some cases, the method may further include annealing the SONOS structure with a deutereated substance prior to forming the deutereated nitride layer. In either embodiment, a SONOS structure may be formed which includes deuterium arranged within an interface of a silicon layer and an oxide layer of the structure.

    摘要翻译: 提供了一种用于处理半导体形貌的方法,其包括在氧化硅 - 氮化物 - 氧化物 - 硅(SONOS)结构的一个或多个界面上扩散氘。 特别地,该方法可以包括在SONOS结构之间隔开的电介质层的回流期间扩散氘穿过SONOS结构的一个或多个界面。 在一些实施方案中,该方法可以包括在回流工艺之前在SONOS结构之上形成去氢化氮化物层。 另外或替代地,该方法可以包括在回流工艺之前在SONOS结构内形成一个去氢化氮化物层。 在一些情况下,该方法可以进一步包括在形成去氢化氮化物层之前用缺失的物质退火SONOS结构。 在任一实施例中,可以形成SONOS结构,其包括排列在硅层和该结构的氧化物层的界面内的氘。

    Method and structure for determining a concentration profile of an impurity within a semiconductor layer
    25.
    发明授权
    Method and structure for determining a concentration profile of an impurity within a semiconductor layer 有权
    用于确定半导体层内的杂质的浓度分布的方法和结构

    公开(公告)号:US06905893B1

    公开(公告)日:2005-06-14

    申请号:US10289020

    申请日:2002-11-05

    摘要: A method is provided for determining a concentration profile of an impurity within a layer of a semiconductor topography. The method may include exposing the layer and an underlying layer to oxidizing conditions. In addition, the method may include comparing thickness measurements of total dielectric above the underlying layer taken before and after exposing the topography to oxidizing conditions . In some cases, the comparison may include plotting pre-oxidation thickness measurements versus post-oxidation measurements. In other embodiments, the comparison may include determining differences between the pre-oxidation and post-oxidation thickness measurements and correlating the differences to concentrations of the impurity. In some cases, such a correlation may include subtracting a concentration of the impurity at a first location along the semiconductor topography from a concentration of the impurity at a second location along the semiconductor topography.

    摘要翻译: 提供了一种用于确定半导体形貌层内的杂质的浓度分布的方法。 该方法可以包括将层和下层暴露于氧化条件。 此外,该方法可以包括将暴露于地形之前和之后的所述下层的总电介质的厚度测量值与氧化条件进行比较。 在某些情况下,比较可能包括绘制预氧化厚度测量值与氧化后测量值。 在其他实施例中,比较可以包括确定预氧化和后氧化厚度测量之间的差异并将差异与杂质的浓度相关联。 在一些情况下,这种相关可以包括沿着半导体形貌从第二位置处的杂质浓度减去沿着半导体形貌的第一位置处的杂质的浓度。

    Low-k dielectric layer with air gaps
    26.
    发明授权
    Low-k dielectric layer with air gaps 有权
    具有气隙的低k电介质层

    公开(公告)号:US06903002B1

    公开(公告)日:2005-06-07

    申请号:US10241236

    申请日:2002-09-11

    CPC分类号: H01L21/7682

    摘要: In one embodiment, a metal level includes a plurality of metal lines. A low-k dielectric is deposited over the metal level such that an air gap forms at least between two metal lines. The relatively low dielectric constant of the low-k dielectric reduces capacitance on metal lines regardless of whether an air gap forms or not. The air gap in the low-k dielectric further reduces capacitance on metal lines. The reduced capacitance translates to lower RC delay and faster signal propagation speeds.

    摘要翻译: 在一个实施例中,金属层包括多条金属线。 低k电介质沉积在金属层上,使得气隙至少形成在两条金属线之间。 低k介质的相对较低的介电常数降低金属线上的电容,而不管是否形成气隙。 低k电介质中的气隙进一步降低了金属线路上的电容。 减小的电容转换为较低的RC延迟和更快的信号传播速度。

    Method of manufacturing a top insulating layer for a sonos-type device
    27.
    发明授权
    Method of manufacturing a top insulating layer for a sonos-type device 有权
    制造超声波型器件顶绝缘层的方法

    公开(公告)号:US06828201B1

    公开(公告)日:2004-12-07

    申请号:US10054515

    申请日:2001-10-22

    IPC分类号: H01L218236

    CPC分类号: H01L27/11568 H01L27/115

    摘要: A method of forming a top oxide layer of a SONOS-type nonvolatile storage device is disclosed. According to a first embodiment, a method may include forming an in situ steam generation (ISSG) top oxide layer 208 from a charge storing dielectric layer 206 by reacting hydrogen and oxygen on a wafer surface (step 102) and depositing a conductive gate layer 210 (step 104). An ISSG top oxide layer 208 may be of higher quality and formed with a smaller thermal budget than conventional approaches.

    摘要翻译: 公开了一种形成SONOS型非易失性存储装置的顶部氧化物层的方法。 根据第一实施例,一种方法可以包括通过使晶片表面上的氢和氧反应,从电荷存储电介质层206形成原位蒸汽产生(ISSG)顶部氧化物层208(步骤102),并沉积导电栅极层210 (步骤104)。 ISSG顶部氧化物层208可以具有更高的质量并且具有比常规方法更小的热预算。

    Metal stack for local interconnect layer
    28.
    发明授权
    Metal stack for local interconnect layer 有权
    用于本地互连层的金属堆叠

    公开(公告)号:US06774033B1

    公开(公告)日:2004-08-10

    申请号:US10287258

    申请日:2002-11-04

    IPC分类号: H01L214763

    CPC分类号: H01L21/32051 H01L21/76895

    摘要: In one embodiment, a local interconnect layer in an integrated circuit is formed by depositing a first film over an oxide layer and depositing a second film over the first film. The first film may comprise titanium nitride, while the second film may comprise tungsten, for example. The first film and the second film may be deposited in-situ by sputtering. The second film may be etched using the first film as an etch stop, and the first film may be etched using the oxide layer as an etch stop.

    摘要翻译: 在一个实施例中,通过在氧化物层上沉积第一膜并在第一膜上沉积第二膜来形成集成电路中的局部互连层。 第一膜可以包括氮化钛,而第二膜可以包括例如钨。 第一膜和第二膜可以通过溅射原位沉积。 可以使用第一膜作为蚀刻停止来蚀刻第二膜,并且可以使用氧化物层作为蚀刻停止来蚀刻第一膜。

    Oxide-nitride-oxide stack having multiple oxynitride layers
    29.
    发明授权
    Oxide-nitride-oxide stack having multiple oxynitride layers 有权
    具有多个氮氧化物层的氧化物 - 氮化物 - 氧化物堆叠

    公开(公告)号:US09449831B2

    公开(公告)日:2016-09-20

    申请号:US13436872

    申请日:2012-03-31

    摘要: An embodiment of a semiconductor memory device including a multi-layer charge storing layer and methods of forming the same are described. Generally, the device includes a channel formed from a semiconducting material overlying a surface on a substrate connecting a source and a drain of the memory device; a tunnel oxide layer overlying the channel; and a multi-layer charge storing layer including an oxygen-rich, first oxynitride layer on the tunnel oxide layer in which a stoichiometric composition of the first oxynitride layer results in it being substantially trap free, and an oxygen-lean, second oxynitride layer on the first oxynitride layer in which a stoichiometric composition of the second oxynitride layer results in it being trap dense. In one embodiment, the device comprises a non-planar transistor including a gate having multiple surfaces abutting the channel, and the gate comprises the tunnel oxide layer and the multi-layer charge storing layer.

    摘要翻译: 描述了包括多层电荷存储层的半导体存储器件的实施例及其形成方法。 通常,该器件包括由半导体材料形成的沟道,该半导体材料覆盖连接存储器件的源极和漏极的衬底上的表面; 覆盖通道的隧道氧化物层; 以及多层电荷存储层,其在所述隧道氧化物层上包含富氧的第一氧氮化物层,其中所述第一氧氮化物层的化学计量组成导致其基本上无陷阱,并且将贫氧的第二氮氧化物层置于 第一氧氮化物层,其中第二氧氮化物层的化学计量组成导致其陷阱致密。 在一个实施例中,该器件包括非平面晶体管,其包括具有邻接通道的多个表面的栅极,并且栅极包括隧道氧化物层和多层电荷存储层。

    SONOS ONO stack scaling
    30.
    发明授权
    SONOS ONO stack scaling 有权
    SONOS ONO堆栈缩放

    公开(公告)号:US09299568B2

    公开(公告)日:2016-03-29

    申请号:US13539461

    申请日:2012-07-01

    摘要: A method of scaling a nonvolatile trapped-charge memory device and the device made thereby is provided. In an embodiment, the method includes forming a channel region including polysilicon electrically connecting a source region and a drain region in a substrate. A tunneling layer is formed on the substrate over the channel region by oxidizing the substrate to form an oxide film and nitridizing the oxide film. A multi-layer charge trapping layer including an oxygen-rich first layer and an oxygen-lean second layer is formed on the tunneling layer, and a blocking layer deposited on the multi-layer charge trapping layer. In one embodiment, the method further includes a dilute wet oxidation to densify a deposited blocking oxide and to oxidize a portion of the oxygen-lean second layer.

    摘要翻译: 提供了一种缩放非易失性俘获电荷存储器件及其制造的器件的方法。 在一个实施例中,该方法包括形成包括电连接衬底中的源极区域和漏极区域的多晶硅沟道区域。 通过氧化衬底以在沟道区域上的衬底上形成隧穿层以形成氧化膜并氮化氧化膜。 在隧道层上形成包含富氧的第一层和无氧的第二层的多层电荷俘获层,以及沉积在多层电荷俘获层上的阻挡层。 在一个实施方案中,该方法还包括稀释的湿氧化以致密集沉积的阻塞氧化物并氧化贫氧的第二层的一部分。