Abstract:
In a plasma processing method, a substrate is loaded onto a lower electrode within a chamber. A plasma power is applied to form plasma within the chamber. A voltage function of a nonsinusoidal wave having a DC pulse portion and a ramp portion is generated. Generating the voltage function may include setting a slope of the ramp portion and setting a duration ratio of the ramp portion to a cycle of the voltage function in order to control an ion energy distribution generated at a surface of the substrate. A bias power of the nonsinusoidal wave is applied to the lower electrode.
Abstract:
A method of fabricating a semiconductor device with capacitors may include forming a mold structure on a lower structure, patterning the mold structure to form a plurality of holes exposing the lower structure, forming a protection layer on sidewalls of the mold structure exposed by the holes, forming lower electrodes in the holes provided with the protection layer, removing the mold structure to expose the protection layer, removing the protection layer to expose sidewalls of the lower electrodes, and sequentially forming a dielectric film and an upper electrode on the lower electrodes.
Abstract:
In a plasma processing method, a substrate is loaded onto a lower electrode within a chamber. A plasma power is applied to form plasma within the chamber. A voltage function of a nonsinusoidal wave having a DC pulse portion and a ramp portion is generated. Generating the voltage function may include setting a slope of the ramp portion and setting a duration ratio of the ramp portion to a cycle of the voltage function in order to control an ion energy distribution generated at a surface of the substrate. A bias power of the nonsinusoidal wave is applied to the lower electrode.
Abstract:
A method of fabricating a semiconductor device is provided. The method may include forming an interlayer insulating layer on a structure with a cell region and a peripheral circuit region, forming a first mask layer on the interlayer insulating layer, forming trenches in the first mask layer exposing the interlayer insulating layer by patterning the first mask layer on the peripheral circuit region, and forming key mask patterns in the trenches. An etch selectivity of the first mask patterns with respect to the interlayer insulating layer may be greater than that of the key mask patterns with respect to the interlayer insulating layer.
Abstract:
A method of fabricating a semiconductor device with capacitors may include forming a mold structure on a lower structure, patterning the mold structure to form a plurality of holes exposing the lower structure, forming a protection layer on sidewalls of the mold structure exposed by the holes, forming lower electrodes in the holes provided with the protection layer, removing the mold structure to expose the protection layer, removing the protection layer to expose sidewalls of the lower electrodes, and sequentially forming a dielectric film and an upper electrode on the lower electrodes.
Abstract:
A system for fabricating a semiconductor device may include a chamber, an electrostatic chuck used to load a substrate, a power source supplying an RF power to the electrostatic chuck, an impedance matcher between the power source and the electrostatic chuck, and a power transmission unit connecting the electrostatic chuck to the impedance matcher. The power transmission unit may include a power rod, which is connected to the electrostatic chuck and has a first outer diameter, and a coaxial cable. The coaxial cable may include an inner wire, an outer wire, and a dielectric material between the outer and inner wires. The inner wire connects the power rod to the impedance matcher and has a second outer diameter less than the first outer diameter. The outer wire is connected to the chamber and is provided to enclose the inner wire and has a first inner diameter less than the first outer diameter and greater than the second outer diameter. A ratio of the first inner diameter to the second outer diameter is greater than a dielectric constant of the dielectric material and less than three times the dielectric constant of the dielectric material.
Abstract:
A method of fabricating a semiconductor device is disclosed. The method may include forming an target layer on a substrate, forming a mask pattern on a target layer, performing a first process to etch the target layer and form a first sub-trench, and performing a second process to further etch the target layer and form a second sub-trench. First and second sidewall patterns may be formed on a sidewall of the mask pattern to be used as an etch mask in the first and second processes, respectively. Outer sidewalls of the first and second sidewall patterns may be formed to have different angles with respect to a top surface of the substrate.
Abstract:
Semiconductor devices are provided. Each of the semiconductor devices may include a plurality of electrodes. Moreover, each of the semiconductor devices may include a supporting pattern connected to sidewalls of the plurality of electrodes. Related methods of forming semiconductor devices are also provided. For example, the methods may include forming the supporting pattern before forming the plurality of electrodes.
Abstract:
In a plasma processing method, a substrate is loaded onto a lower electrode within a chamber. A plasma power is applied to form plasma within the chamber. A voltage function of a nonsinusoidal wave having a DC pulse portion and a ramp portion is generated. Generating the voltage function may include setting a slope of the ramp portion and setting a duration ratio of the ramp portion to a cycle of the voltage function in order to control an ion energy distribution generated at a surface of the substrate. A bias power of the nonsinusoidal wave is applied to the lower electrode.
Abstract:
A method for fabricating a semiconductor device is disclosed. The method includes forming a first interlayer insulating layer including a first trench that is defined by a first gate spacer and a second trench that is defined by a second gate spacer on a substrate, forming a first gate electrode that fills a part of the first trench and a second gate electrode that fills a part of the second trench, forming a first capping pattern that fills the remainder of the first trench on the first gate electrode, forming a second capping pattern that fills the remainder of the second trench on the second gate electrode, forming a second interlayer insulating layer that covers the first gate spacer and the second gate spacer on the first interlayer insulating layer, forming a third interlayer insulating layer on the second interlayer insulating layer and forming a contact hole that penetrates the third interlayer insulating layer and the second interlayer insulating layer between the first gate electrode and the second gate electrode.