摘要:
Fully encapsulated conductive lines are generally described. For example, a first dielectric layer is formed on a substrate. Copper wiring is disposed below a top surface of the first dielectric layer. A barrier metal layer is formed over the copper wiring, the barrier metal layer flush with the top surface of the first dielectric layer, and a second dielectric layer is formed on the barrier metal layer and the top surface of the first dielectric layer. Other embodiments are also disclosed and claimed.
摘要:
Techniques are disclosed for integrating capacitors among the metal interconnect for embedded DRAM applications. In some embodiments, the technique uses a wet etch to completely remove the interconnect metal (e.g., copper) that is exposed prior to the capacitor formation. This interconnect metal removal precludes that metal from contaminating the hi-k dielectric of the capacitor. Another benefit is increased height (surface area) of the capacitor, which allows for increased charge storage. In one example embodiment, an integrated circuit device is provided that includes a substrate having at least a portion of a DRAM bit cell circuitry, an interconnect layer on the substrate and including one or more metal-containing interconnect features, and a capacitor at least partly in the interconnect layer and occupying space from which a metal-containing interconnect feature was removed. The integrated circuit device can be, for example, a processor or a communications device.
摘要:
Techniques are disclosed for integrating capacitors among the metal interconnect for embedded DRAM applications. In some embodiments, the technique uses a wet etch to completely remove the interconnect metal (e.g., copper) that is exposed prior to the capacitor formation. This interconnect metal removal precludes that metal from contaminating the hi-k dielectric of the capacitor. Another benefit is increased height (surface area) of the capacitor, which allows for increased charge storage. In one example embodiment, an integrated circuit device is provided that includes a substrate having at least a portion of a DRAM bit cell circuitry, an interconnect layer on the substrate and including one or more metal-containing interconnect features, and a capacitor at least partly in the interconnect layer and occupying space from which a metal-containing interconnect feature was removed. The integrated circuit device can be, for example, a processor or a communications device.
摘要:
A semiconductor device and method to form a semiconductor device is described. The semiconductor includes a gate stack disposed on a substrate. Tip regions are disposed in the substrate on either side of the gate stack. Halo regions are disposed in the substrate adjacent the tip regions. A threshold voltage implant region is disposed in the substrate directly below the gate stack. The concentration of dopant impurity atoms of a particular conductivity type is approximately the same in both the threshold voltage implant region as in the halo regions. The method includes a dopant impurity implant technique having sufficient strength to penetrate a gate stack.
摘要:
Semiconductor structures having integrated double-wall capacitors for eDRAM and methods to form the same are described. For example, an embedded double-wall capacitor includes a trench disposed in a first dielectric layer disposed above a substrate. The trench has a bottom and sidewalls. A U-shaped metal plate is disposed at the bottom of the trench, spaced apart from the sidewalls. A second dielectric layer is disposed on and conformal with the sidewalls of the trench and the U-shaped metal plate. A top metal plate layer is disposed on and conformal with the second dielectric layer.
摘要:
The mobility of carriers may be increased in strained channel epitaxial source/drain transistors. Doped silicon material may be blanket deposited after removing ion implanted source/drain regions. The blanket deposition forms amorphous films over non-source/drain areas and crystalline films in source/drain regions. By using an etch which is selective to amorphous silicon, the amorphous material may be removed. This may avoid some problems associated with selective deposition of the doped silicon material.
摘要:
A method including forming a transistor structure structure comprising a gate electrode over an active region of a substrate, the active region defined by a trench isolation structure and changing a performance of a narrow width transistor with respect to a wide width transistor by introducing a dopant into the active region adjacent an interface defined by the trench isolation structure and the gate electrode. A structure including a gate electrode formed on a substrate, an active region adjacent an interface defined by a trench isolation structure and a gate electrode and an implant within the active region to change a performance of a transistor.
摘要:
A gate structure may be utilized as a mask to form source and drain regions. Then the gate structure may be removed to form a gap and spacers may be formed in the gap to define a trench. In the process of forming a trench into the substrate, a portion of the source drain region is removed. Then the substrate is filled back up with an epitaxial material and a new gate structure is formed thereover. As a result, more abrupt source drain junctions may be achieved.
摘要:
Numerous embodiments of a method for highly selective faceting of the S/D regions in a CMOS device are described. In one embodiment, source/drain regions are formed on a substrate. The source/drain regions are wet etched to form faceted regions. A silicon germanium layer is formed on the faceted regions of the source/drain regions to yield a strained device.
摘要:
An epitaxially deposited source/drain extension may be formed for a metal oxide semiconductor field effect transistor. A sacrificial layer may be formed and etched away to undercut under the gate electrode. Then a source/drain extension of epitaxial silicon may be deposited to extend under the edges of the gate electrode. As a result, the extent by which the source/drain extension extends under the gate may be controlled by controlling the etching of the sacrificial material. Its thickness and depth may be controlled by controlling the deposition process. Moreover, the characteristics of the source/drain extension may be controlled independently of those of the subsequently formed deep or heavily doped source/drain junction.