Abstract:
A semiconductor structure including nanotubes forming an electrical connection between electrodes is disclosed. The semiconductor structure may include an open volume defined by a lower surface of an electrically insulative material and sidewalls of at least a portion of each of a dielectric material and opposing electrodes. The nanotubes may extend between the opposing electrodes, forming a physical and electrical connection therebetween. The nanotubes may be encapsulated within the open volume in the semiconductor structure. A semiconductor structure including nanotubes forming an electrical connection between source and drain regions is also disclosed. The semiconductor structure may include at least one semiconducting carbon nanotube electrically connected to a source and a drain, a dielectric material disposed over the at least one semiconducting carbon nanotube and a gate dielectric overlying a portion of the dielectric material. Methods of forming the semiconductor structures are also disclosed.
Abstract:
The invention includes semiconductor packages having grooves within a semiconductor die backside; and includes semiconductor packages utilizing carbon nanostructures (such as, for example, carbon nanotubes) as thermally conductive interface materials. The invention also includes methods of cooling a semiconductor die in which coolant is forced through grooves in a backside of the die, and includes methods of making semiconductor packages.
Abstract:
Some embodiments include methods of reading memory cells. The memory cells have a write operation that occurs only if a voltage of sufficient absolute value is applied for a sufficient duration of time; and the reading is conducted with a pulse that is of too short of a time duration to be sufficient for the write operation. In some embodiments, the pulse utilized for the reading may have an absolute value of voltage that is greater than or equal to the voltage utilized for the write operation. In some embodiments, the memory cells may comprise non-ohmic devices; such as memristors and diodes.
Abstract:
The invention includes methods of forming reticles configured for imprint lithography, methods of forming capacitor container openings, and methods in which capacitor container openings are incorporated into DRAM arrays. An exemplary method of forming a reticle includes formation of a radiation-imageable layer over a material. A lattice pattern is then formed within the radiation-imageable layer, with the lattice pattern defining a plurality of islands of the radiation-imageable layer. The lattice-patterned radiation-imageable layer is utilized as a mask while subjecting the material under the lattice-patterned layer to an etch which transfers the lattice pattern into the material. The etch forms a plurality of pillars which extend only partially into the material, with the pillars being spaced from one another by gaps. The gaps are subsequently narrowed with a second material which only partially fills the gaps.
Abstract:
Some embodiments include methods of forming diodes. A stack may be formed over a first conductive material. The stack may include, in ascending order, a sacrificial material, at least one dielectric material, and a second conductive material. Spacers may be formed along opposing sidewalls of the stack, and then an entirety of the sacrificial material may be removed to leave a gap between the first conductive material and the at least one dielectric material. In some embodiments of forming diodes, a layer may be formed over a first conductive material, with the layer containing supports interspersed in sacrificial material. At least one dielectric material may be formed over the layer, and a second conductive material may be formed over the at least one dielectric material. An entirety of the sacrificial material may then be removed.
Abstract:
Some embodiments include methods of forming memory cells utilizing various arrangements of conductive lines, electrodes and programmable material; with the programmable material containing high k dielectric material directly against multivalent metal oxide. Some embodiments include arrays of memory cells, with the memory cells including programmable material containing high k dielectric material directly against multivalent metal oxide.
Abstract:
Some embodiments include methods of forming patterns of openings. The methods may include forming spaced features over a substrate. The features may have tops and may have sidewalls extending downwardly from the tops. A first material may be formed along the tops and sidewalls of the features. The first material may be formed by spin-casting a conformal layer of the first material across the features, or by selective deposition along the features relative to the substrate. After the first material is formed, fill material may be provided between the features while leaving regions of the first material exposed. The exposed regions of the first material may then be selectively removed relative to both the fill material and the features to create the pattern of openings.
Abstract:
Methods of controlling critical dimensions of reduced-sized features during semiconductor fabrication through pitch multiplication are disclosed. Pitch multiplication is accomplished by patterning mask structures via conventional photoresist techniques and subsequently transferring the pattern to a sacrificial material. Spacer regions are then formed on the vertical surfaces of the transferred pattern following the deposition of a conformal material via atomic layer deposition. The spacer regions, and therefore the reduced features, are then transferred to a semiconductor substrate.
Abstract:
A process of forming a semiconductive carbon nanotube structure includes imposing energy on a mixture that contains metallic carbon nanotubes and semiconductive carbon nanotubes under conditions to cause the metallic carbon nanotubes to be digested or to decompose so that they may be separated away from the semiconductive carbon nanotubes.
Abstract:
Memory cell structures and methods are described herein. One or more memory cells include a transistor having a charge storage node, a dielectric material positioned between the charge storage node and a channel region of the transistor, the channel region positioned between a source region and a drain region, and a first electrode of a diode coupled to the charge storage node.