Abstract:
Embodiments of the present invention provide methods for forming layers that comprise electropositive metals through ALD (atomic layer deposition) and or CVD (chemical vapor deposition) processes, layers comprising one or more electropositive metals, and semiconductor devices comprising layers comprising one or more electropositive metals. In embodiments of the invention, the layers are thin or ultrathin (films that are less than 100 Å thick) and or conformal films. Additionally provided are transistor devices, metal interconnects, and computing devices comprising metal layers comprising one or more electropositive metals.
Abstract:
Embodiments of the present invention provide methods for forming layers that comprise electropositive metals through ALD (atomic layer deposition) and or CVD (chemical vapor deposition) processes, layers comprising one or more electropositive metals, and semiconductor devices comprising layers comprising one or more electropositive metals. In embodiments of the invention, the layers are thin or ultrathin (films that are less than 100 Å thick) and or conformal films. Additionally provided are transistor devices, metal interconnects, and computing devices comprising metal layers comprising one or more electropositive metals.
Abstract:
Technologies for high-performance magnetoelectric spin-orbit (MESO) logic structures are disclosed. In the illustrative embodiment, the spin-orbit coupling layer of a MESO logic structure is a high-entropy perovskite. The use of a high-entropy perovskite provides versatility through tunability, as there is a wide range of possible combinations. Additional layers of the MESO logic structure may also be perovskites, such as the magnetoelectric layer and ferromagnetic layer. The various perovskite layers may be epitaxially compatible, allowing for growth of high-quality layers.
Abstract:
Technologies for a transistor with a thin-film ferroelectric gate dielectric are disclosed. In the illustrative embodiment, a transistor has a thin layer of scandium aluminum nitride (ScxAl1-xN) ferroelectric gate dielectric. The channel of the transistor may be, e.g., gallium nitride or molybdenum disulfide. In one embodiment, the ferroelectric polarization changes when voltage is applied and removed from a gate electrode, facilitating switching of the transistor at a lower applied voltage. In another embodiment, the ferroelectric polarization of a gate dielectric of a transistor changes when the voltage is past a positive threshold value or a negative threshold value. Such a transistor can be used as a one-transistor memory cell.
Abstract:
Technologies for a field effect transistor (FET) with a ferroelectric gate dielectric are disclosed. In an illustrative embodiment, a perovskite stack is grown on a buffer layer as part of manufacturing a transistor. The perovskite stack includes one or more doped semiconductor layers alternating with other lattice-matched layers, such as undoped semiconductor layers. Growing the doped semiconductor layers on lattice-matched layers can improve the quality of the doped semiconductor layers. The lattice-matched layers can be preferentially etched away, leaving the doped semiconductor layers as fins for a ribbon FET. In another embodiment, an interlayer can be deposited on top of a semiconductor layer, and a ferroelectric layer can be deposited on the interlayer. The interlayer can bridge a gap in lattice parameters between the semiconductor layer and the ferroelectric layer.
Abstract:
In one embodiment, a transistor device includes a gate material layer on a substrate, a ferroelectric (FE) material layer on the gate material, a semiconductor channel material layer on the FE material layer, a first source/drain material on the FE material layer and adjacent the semiconductor channel material layer, and a second source/drain material on the FE material layer and adjacent the semiconductor channel material layer and on an opposite side of the semiconductor channel material layer from the first source/drain material. A first portion of the FE material layer is directly between the gate material and the first source/drain material, and a second portion of the FE material layer is directly between the gate material and the second source/drain material.
Abstract:
In one embodiment, a transistor device includes a metal layer, a first dielectric layer comprising Hafnium and Oxygen on the metal layer, a channel layer comprising Tungsten and Selenium above the dielectric layer, a second dielectric layer comprising Hafnium and Oxygen on the channel layer, a source region comprising metal on a first end of the channel layer, a drain region comprising metal on a second end of the channel layer opposite the first end, and a metal contact on the second dielectric layer between the source regions and the drain region. In some embodiments, the transistor device may be included in a complementary metal-oxide semiconductor (CMOS) logic circuit in the back-end of an integrated circuit device, such as a processor or system-on-chip (SoC).
Abstract:
A metal chalcogenide material layer of lower quality provides a transition between a metal chalcogenide material layer of higher quality and a gate insulator material that separates the metal chalcogenide material layers from a gate electrode of a metal-oxide semiconductor field effect transistor (MOSFET) structure. Gate insulator material may be more readily initiated and/or or precisely controlled to a particular thickness when formed on lower quality metal chalcogenide material. Accordingly, such a material stack may be integrated into a variety of transistor structures, including multi-gate, multi-channel nanowire or nanosheet transistor structures.
Abstract:
Described herein are integrated circuit devices with conductive regions formed from MX or MAX materials. MAX materials are layered, hexagonal carbides and nitrides that include an early transition metal (M) and an A group element (A). MX materials remove the A group element. MAX and MX materials are highly conductive, and their two-dimensional layer structure allows very thin layers to be formed. MAX or MX materials can be used to form several conductive elements of IC circuits, including contacts, interconnects, or liners or barrier regions for contacts or interconnects.
Abstract:
Adjacent interconnect lines are in staggered, vertically spaced positions, which accordingly reduces their capacitive coupling within one level of interconnect metallization. Short and tall interconnect via openings are landed on the vertically staggered interconnect lines. Cap material selectively deposited upon upper ones of the staggered interconnect lines limits over etch of the short vias while the tall vias are advanced toward lower ones of the staggered interconnect lines. The via openings of differing depth may be filled, for example with a single damascene metallization process that defines a co-planar top surface for all via metallization over the staggered, vertically spaced interconnect lines.