摘要:
A current steering element (100) formed such that the current steering element covers a lower opening (105) of a via hole (104) formed in an interlayer insulating layer (102), comprises: a corrosion-suppressing layer (106) formed on a lower side of a lower opening of the via hole such that the corrosion-suppressing layer covers an entire portion of the lower opening; a second electrode layer (108) formed under the corrosion-suppressing layer and comprising a material different from a material of the corrosion-suppressing layer; a current steering layer (110) formed under the second electrode layer such that the current steering layer is physically in contact with the second electrode layer; and a first electrode layer (112) formed under the current steering layer such that the first electrode layer is physically in contact with the current steering layer; and the first electrode layer, the current steering layer and the second electrode layer constitute one of a MSM diode and a MIM diode.
摘要:
A variable resistance element manufacturing method includes: forming a conductive plug in an interlayer insulating film on a substrate; planarizing an upper surface of the insulating film such that an upper part of the conductive plug protrudes from an upper surface of the insulating film by removing (i) a depression in the insulating film formed around the conductive plug and (ii) a depression in the insulating film formed across a plurality of conductive plugs; forming, on the insulating film and the plug, a lower electrode layer electrically connected to the plug; planarizing an upper surface of the lower electrode layer to remove a protruding part on the upper surface of the lower electrode layer; forming, on the lower electrode layer, a variable resistance layer; forming an upper electrode layer on the variable resistance layer; and forming a lower electrode, the variable resistance layer, and an upper electrode layer.
摘要:
A resistance variable element (100) used in a through-hole cross-point structure memory device, according to the present invention, and a resistance variable memory device including the resistance variable element, includes a substrate (7) and an interlayer insulating layer (3) formed on the substrate, and have a configuration in which a through-hole (4) is formed to penetrate the interlayer insulating layer, a first resistance variable layer (2) comprising transition metal oxide is formed outside the through-hole, a second resistance variable layer (5) comprising transition metal oxide is formed inside the through-hole, the first resistance variable layer is different in resistivity from the second resistance variable layer, and the first resistance variable layer and the second resistance variable layer are in contact with each other only in an opening (20) of the through-hole which is closer to the substrate.
摘要:
A multilevel interconnect structure in a semiconductor device includes a first insulating layer formed on a semiconductor wafer, a Cu interconnect layer formed on the first insulating layer, a second insulating layer formed on the Cu interconnect layer, and a metal oxide layer formed at an interface between the Cu interconnect layer and the second insulating layer. The metal oxide layer is formed by immersion-plating a metal, such as Sn or Zn, on the Cu interconnect layer and then heat-treating the plated layer in an oxidizing atmosphere.
摘要:
An improved SIV resistance and an improved EM resistance are achieved in the coupling structure containing copper films. A semiconductor device includes: a semiconductor substrate; a second insulating layer formed on or over the semiconductor substrate; a second barrier metal film, formed on the second insulating film, and being capable of preventing copper from diffusing into the second insulating film; and an electrically conducting film formed on the second barrier metal film so as to be in contact with the second barrier metal film, and containing copper and carbon, wherein a distribution of carbon concentration along a depositing direction in the second electrically conducting film includes a first peak and a second peak.
摘要:
A semiconductor device has a semiconductor substrate, and a multi-layered wiring arrangement provided thereon. The multi-layered wring arrangement includes at least one insulating layer structure having a metal wiring pattern formed therein. The insulating layer structure includes a first SiOCH layer, a second SiOCH layer formed on the first SiOCH layer, and a silicon dioxide (SiO2) layer formed on the second SiOCH layer. The second SiOCH layer features a carbon (C) density lower than that of the first SiOCH layer, a hydrogen (H) density lower than that of the first SiOCH layer, and an oxygen (O) density higher than that of the first SiOCH layer.
摘要:
In copper plating using a damascene method, in order to prevent cost rise, dishing, erosion and the like due to the protrusion of plating on the dense wiring area to increase the time for CMP polishing, the copper plating is performed so that the current step of the copper plating has only one step for flowing current in the direction opposite to the direction of growing the plating as shown in FIG. 1. In this time, this opposite direction current step is performed under the condition of a current-time product within a range between 1.0 and 120 mA×sec/cm2.
摘要翻译:在使用镶嵌方法的镀铜中,为了防止由于在致密配线区域上的电镀突出而引起的成本上升,凹陷,侵蚀等,以增加CMP抛光的时间,进行镀铜,使得电流步骤 的铜电镀仅在与电镀方向相反的方向流动电流的一个步骤,如图3所示。 1。 此时,在1.0〜120mA / sec / cm 2范围内的当前时间积的条件下进行该相反方向电流步骤。
摘要:
Integrated circuit capacitors in which the capacitor dielectric is a thin film of BST having a grain size smaller than 200 nanometers formed above a silicon germanium substrate. Typical grain sizes are 40 nm and less. The BST is formed by deposition of a liquid precursor by a spin-on process. The original liquid precursor includes an alkoxycarboxylate dissolved in 2-methoxyethanol and a xylene exchange is performed just prior to spinning. The precursor is dried in air at a temperature of about 400° C. and then furnace annealed in oxygen at a temperature of between 600° C. and 850° C.
摘要:
A nondestructive read-out, nonvolatile ferroelectric field effect transistor (“FET”) memory in an integrated circuit, containing a thin film of polycrystalline crystallographically oriented ferroelectric material. Preferably, the material is polycrystalline c-axis oriented layered superlattice material. More preferably, it is c-axis oriented strontium bismuth tantalate or strontium bismuth tantalum niobate.
摘要:
A liquid precursor for forming a thin film of ferroelectric metal oxide in an integrated circuit contains metal oxides in excess of the stoichiometrically balanced amount. When the precursor comprises strontium, bismuth, tantalum and niobium for forming strontium bismuth tantalum niobate, the precursor contains excess amounts of at least one of tantalum and niobium. Capacitors containing thin films of layered superlattice material made from a precursor containing excess tantalum and niobium show good polarizability and low percentage imprint after 1010 negative polarization switching pulses at 75° C., and after 109 negative polarization switching pulses at 125° C.