Abstract:
Apparatus and methods for depositing materials on a plurality of site-isolated regions on a substrate are provided. The deposition uses PECVD or PEALD. The apparatus include an inner chamber with an aperture and barrier that can be used to isolate the regions during the deposition and prevent the remaining portions of the substrate from being exposed to the deposition process. The process parameters for the deposition process are varied among the site-isolate regions in a combinatorial manner.
Abstract:
A nonvolatile resistive memory element includes a novel switching layer and methods of forming the same. The switching layer includes a material having bistable resistance properties and formed by bonding silicon to oxygen or nitrogen. The switching layer may include at least one of SiOx, SiOxNy, or SiNx. Advantageously, the SiOx, SiOxNy, and SiNx generally remain amorphous after thermal anneal processes are used to form the devices, such as ReRAM devices.
Abstract translation:非易失性电阻性存储元件包括新型开关层及其形成方法。 开关层包括具有双稳电阻性质并通过将硅键合到氧或氮而形成的材料。 开关层可以包括SiO x,SiO x N y或SiN x中的至少一种。 有利地,在使用热退火工艺来形成诸如ReRAM器件的器件之后,SiO x,SiO x N y和SiN x通常保持非晶态。
Abstract:
Resistive-switching memory elements having improved switching characteristics are described, including a memory element having a first electrode and a second electrode, a switching layer between the first electrode and the second electrode comprising hafnium oxide and having a first thickness, and a coupling layer between the switching layer and the second electrode, the coupling layer comprising a material including metal titanium and having a second thickness that is less than 25 percent of the first thickness.
Abstract:
A gas bearing seal using porous materials for distribution of gas flow can provide site isolation during wet processing. In some embodiments, a flow cell comprises a porous media gas bearing surrounding a periphery of the flow cell, isolating the liquid inside the flow cell from the ambient air outside the flow cell. In some embodiments, a protective chuck comprises a porous media gas bearing disposed in a middle of the protective chuck, isolating the liquid outside the protective chuck with the gaseous ambient generated by the porous media gas bearing.
Abstract:
Provided are resistive random access memory (ReRAM) cells and methods of fabricating thereof. A ReRAM cell includes an embedded resistor and resistive switching layer connected in series. The embedded resistor prevents excessive electrical currents through the resistive switching layer, especially when the resistive switching layer is switched into its low resistive state, thereby preventing over-programming. The embedded resistor includes aluminum, nitrogen, and one or more additional metals (other than aluminum). The concentration of each component is controlled to achieve desired resistivity and stability of the embedded resistor. In some embodiments, the resistivity ranges from 0.1 Ohm-centimeter to 40 Ohm-centimeter and remains substantially constant while applying an electrical field of up 8 mega-Volts/centimeter to the embedded resistor. The embedded resistor may be made from an amorphous material, and the material is operable to remain amorphous even when subjected to typical annealing conditions.
Abstract:
Provided are resistive random access memory (ReRAM) cells having diffusion barrier layers formed from various materials, such as beryllium oxide or titanium silicon nitrides. Resistive switching layers used in ReRAM cells often need to have at least one inert interface such that substantially no materials pass through this interface. The other (reactive) interface may be used to introduce and remove defects from the resistive switching layers causing the switching. While some electrode materials, such as platinum and doped polysilicon, may form inert interfaces, these materials are often difficult to integrate. To expand electrode material options, a diffusion barrier layer is disposed between an electrode and a resistive switching layer and forms the inert interface with the resistive switching layer. In some embodiments, tantalum nitride and titanium nitride may be used for electrodes separated by such diffusion barrier layers.
Abstract:
Erbium silicide layers can be used in CMOS transistors in which the work function of the erbium silicide layers can be tuned for use in PMOS and NMOS devices. A nano-laminate sputtering approach can be used in which silicon and erbium layers are alternatingly deposited to determine optimum layer properties, composition profiles, and erbium to silicon ratios for a particular gate stack.
Abstract:
Diffusion of silver from LED reflector layers is blocked by 10-50 nm barrier layers of nickel-titanium (NiTi) alloys. Optionally, the alloys also include one or more of tungsten (W), niobium (Nb), aluminum (Al), vanadium (V), tantalum (Ta), or chromium (Cr). These barriers may omit the noble-metal (e.g., platinum or gold) cap used with silver barriers based on other materials.
Abstract:
Methods and apparatus for processing using a remote plasma source are disclosed. The apparatus includes an outer chamber enclosing a substrate support, a remote plasma source, and a showerhead. A substrate heater can be mounted in the substrate support. A transport system moves the substrate support and is capable of positioning the substrate. The plasma system may be used to generate activated hydrogen species. The activated hydrogen species can be used to etch/clean semiconductor oxide surfaces such as silicon oxide or germanium oxide.
Abstract:
A nonvolatile resistive memory element includes an oxygen-gettering layer. The oxygen-gettering layer is formed as part of an electrode stack, and is more thermodynamically favorable in gettering oxygen than other layers of the electrode stack. The Gibbs free energy of formation (ΔfG°) of an oxide of the oxygen-gettering layer is less (i.e., more negative) than the Gibbs free energy of formation of an oxide of the adjacent layers of the electrode stack. The oxygen-gettering layer reacts with oxygen present in the adjacent layers of the electrode stack, thereby preventing this oxygen from diffusing into nearby silicon layers to undesirably increase an SiO2 interfacial layer thickness in the memory element and may alternately be selected to decrease such thickness during subsequent processing.