摘要:
In a gate structure of a non-volatile memory device is formed, a tunnel insulating layer and a charge trapping layer are formed on a substrate. A composite dielectric layer is formed on the charge trapping layer and has a laminate structure in which first material layers including aluminum oxide and second material layers including hafnium oxide or zirconium oxide are alternately stacked. A conductive layer is formed on the composite dielectric layer and then a gate structure is formed by patterning the conductive layer, the composite dielectric layer, the charge trapping layer, and the tunnel insulating layer.
摘要:
Example embodiments of the present invention disclose a non-volatile semiconductor memory device, which may include a dielectric layer having an enhanced dielectric constant. A tunnel oxide layer pattern and a floating gate may be sequentially formed on a substrate. A dielectric layer pattern including metal oxide doped with Group III transition metals may be formed on the floating gate using a pulsed laser deposition process. The dielectric layer pattern having an increased dielectric constant may be formed of metal oxide doped with a transition metal such as scandium, yttrium, or lanthanum.
摘要:
Disclosed is a method for forming a multi-layered structure having at least two films on a semiconductor substrate. The substrate is disposed on a thermally conductible stage for supporting the substrate. After the distance between the stage and the substrate is adjusted to a first interval so that the substrate has a first temperature by heat transferred from the stage, a first thin film is formed on the substrate at the first temperature. The distance is then adjusted from the first interval to a second interval so that the substrate reaches a second temperature, and then a second thin film is formed on the first thin film at the second temperature, thereby forming the multi-layered structure on the substrate. The multi-layered structure can be employed for a gate insulation film or the dielectric film of a capacitor.
摘要:
A thin film structure and a capacitor using the film structure and methods for forming the same. The thin film structure may include a first film formed on a substrate using a first reactant and an oxidant for oxidizing the first reactant. A second film may be formed on the first film to suppress crystallization of the first film. A capacitor may include a dielectric layer, which may further include the first thin film and the second thin film.
摘要:
An IC device includes a polycrystalline silicon thin film interposed between a first level semiconductor circuit and a second level semiconductor circuit which are formed on a substrate and disposed to vertically overlap each other. The polycrystalline silicon thin film includes at least one silicon single crystal. The at least one silicon single crystal includes a flat horizontal portion, which provides an active region of the second level semiconductor device, and a pin-shaped protruding portion protruding from the flat horizontal portion toward the first level semiconductor device.
摘要:
A method for fabricating a nonvolatile memory device is disclosed. The method includes forming a first structure for a common source line on a semiconductor substrate, the first structure extending along a first direction, forming a mold structure by alternately stacking a plurality of sacrificial layers and a plurality of insulating layers on the semiconductor substrate, forming a plurality of openings in the mold structure exposing a portion of the first structure, and forming a first memory cell string at a first side of the first structure and a second memory cell string at a second, opposite side of the first structure. The plurality of openings include a first through-hole and a second through-hole, each through-hole passing through the plurality of sacrificial layers and plurality of insulating layers, and the first through-hole and the second through-hole overlap each other in the first direction.
摘要:
A method of fabricating a nonvolatile memory device includes providing an intermediate structure in which a floating gate and an isolation film are disposed adjacent to each other on a semiconductor substrate and a gate insulating film is disposed on the floating gate and the isolation film, forming a conductive film on the gate insulating film, and annealing the conductive film so that part of the conductive film on an upper portion of the floating gate flows down onto a lower portion of the floating gate and an upper portion of the isolation film.
摘要:
A method of manufacturing a semiconductor device includes forming a channel region, forming a buffer layer on the channel region, and heat-treating the channel region by using a gas containing halogen atoms.
摘要:
Methods of manufacturing a semiconductor device include forming a stopping layer pattern in a first region of a substrate. A first mold structure is formed in a second region of the substrate that is adjacent the first region. The first mold structure includes first sacrificial patterns and first interlayer patterns stacked alternately. A second mold structure is formed on the first mold structure and the stopping layer pattern. The second mold structure includes second sacrificial patterns and second interlayer patterns stacked alternately. The second mold structure partially covers the stopping layer pattern. A channel pattern is formed and passes through the first mold structure and the second mold structure.
摘要:
Nonvolatile memory devices include a tunnel insulating layer on a substrate and a charge storing layer on the tunnel insulating layer. A charge transfer blocking layer is provided on the charge storing layer. The charge transfer blocking layer is formed as a composite of multiple layers, which include a first oxide layer having a thickness of about 1 Å to about 10 Å. This first oxide layer is formed directly on the charge storing layer. The charge transfer blocking layer includes a first dielectric layer on the first oxide layer. The charge transfer blocking layer also includes a second oxide layer on the first dielectric layer and a second dielectric layer on the second oxide layer. The first and second dielectric layers have a higher dielectric constant relative to the first and second oxide layers, respectively. The memory cell includes an electrically conductive electrode on the charge transfer blocking layer.