摘要:
A logic device having a vertically extending MIM capacitor between interconnect layers includes a semiconductor substrate. A lower interconnect layer is located over the semiconductor substrate, and an upper interconnect layer is located over the lower interconnect layer. A U-shaped lower metal plate is interposed between the lower interconnect layer and the upper interconnect layer. The U-shaped lower metal plate directly contacts the lower interconnect layer. The capacitor dielectric layer covers the inner surface of the lower metal plate. Further, the capacitor dielectric layer has an extension portion interposed between the brim of the lower metal plate and the upper interconnect layer. An upper metal plate covers the inner surface of the capacitor dielectric layer. The upper metal plate is in contact with the upper interconnect layer and is confined by the capacitor dielectric layer.
摘要:
A method of forming a dielectric layer using a plasma enhanced atomic layer deposition technique includes: loading a semiconductor substrate having a three-dimensional structure into a reaction chamber; and repeatedly performing the following steps until a dielectric layer with a desired thickness is formed: supplying a source gas into the reaction chamber; stopping the supply of the source gas and purging the source gas remaining inside the reaction chamber; and supplying oxygen gas into the reaction chamber after purging the source gas, and applying RF power for oxygen plasma treatment, a level of the applied RF power and a partial pressure of the oxygen gas being increased concurrently with an increased aspect ratio of the three-dimensional structure.
摘要:
Methods of forming a thin film by atomic layer deposition are disclosed. These methods generally include the steps of loading a substrate into a reaction chamber, and injecting a first source gas containing a first atom into the reaction chamber to form a chemical adsorption layer containing the first atom on the substrate. In one representative embodiment, a first reaction gas is then injected into the reaction chamber while a first plasma power is applied to the reaction chamber such that the first reaction gas reacts with the chemical adsorption layer containing the first atom to form a first thin film on the substrate. A second source gas containing a second atom is then injected into the reaction chamber to form a chemical adsorption layer containing the second atom on the substrate having the first thin film. A second reaction gas is next injected into the reaction chamber while a second plasma power, which is higher than the first plasma power, is applied to the reaction chamber such that the second reaction gas reacts with the chemical adsorption layer containing the second atom to form a second thin film on the substrate. The first plasma power may be a value selected in a range equal to or greater than 0 W and less than about 500 W, and the second plasma power may be a value selected in a range greater than the first plasma power and less than about 2000 W. A thickness of the second thin film may be equal to or greater than a thickness of the first thin film.
摘要:
A logic device having a vertically extending MIM capacitor between interconnect layers includes a semiconductor substrate. A lower interconnect layer is located over the semiconductor substrate, and an upper interconnect layer is located over the lower interconnect layer. A U-shaped lower metal plate is interposed between the lower interconnect layer and the upper interconnect layer. The U-shaped lower metal plate directly contacts the lower interconnect layer. The capacitor dielectric layer covers the inner surface of the lower metal plate. Further, the capacitor dielectric layer has an extension portion interposed between the brim of the lower metal plate and the upper interconnect layer. An upper metal plate covers the inner surface of the capacitor dielectric layer. The upper metal plate is in contact with the upper interconnect layer and is confined by the capacitor dielectric layer.
摘要:
A method of forming a dielectric layer using a plasma enhanced atomic layer deposition technique includes: loading a semiconductor substrate having a three-dimensional structure into a reaction chamber; and repeatedly performing the following steps until a dielectric layer with a desired thickness is formed: supplying a source gas into the reaction chamber; stopping the supply of the source gas and purging the source gas remaining inside the reaction chamber; and supplying oxygen gas into the reaction chamber after purging the source gas, and applying RF power for oxygen plasma treatment, a level of the applied RF power and a partial pressure of the oxygen gas being increased concurrently with an increased aspect ratio of the three-dimensional structure.
摘要:
In semiconductor integrated circuit devices having a hybrid dielectric layer and methods of fabricating the same, the hybrid dielectric layer includes a lower dielectric layer, an intermediate dielectric layer and an upper dielectric layer which are sequentially stacked. The lower dielectric layer contains hafnium (Hf) or zirconium (Zr). The upper dielectric layer also contains Hf or Zr. The intermediate dielectric layer is formed of a material layer having a voltage dependent capacitance variation lower than that of the lower dielectric layer.
摘要:
Example embodiments of the present invention relate to a method of forming a dielectric thin film and a method of fabricating a semiconductor memory device having the same. Other example embodiments of the present invention relate to a method of forming a ZrO2 thin film and a method of fabricating a capacitor of a semiconductor memory device using the ZrO2 thin film as a dielectric layer. A method of forming a ZrO2 thin film may include supplying a zirconium precursor on a substrate maintained at a desired temperature, thereby forming a chemisorption layer of the precursor on the substrate. The zirconium precursor may be a tris(N-ethyl-N-methylamino)(tert-butoxy) zirconium precursor. The substrate having the chemisorption layer of the precursor may be exposed to the plasma atmosphere of oxygen-containing gas for a desired time, thereby forming a Zr oxide layer on the substrate, and a method of fabricating a capacitor of a semiconductor memory device having the ZrO2 thin film.
摘要:
Provided is a method of forming a metal layer using metal-organic chemical vapor deposition (MOCVD). The method includes using MOCVD to form on a dielectric layer a metal layer having a first thickness, performing a first plasma process on the metal layer, using the MOCVD process to form a metal layer having a second thickness on the metal layer having the first thickness and performing a second plasma process on the metal layer having the second thickness, wherein the second plasma process has an energy level greater than the energy level of the first plasma process.
摘要:
An apparatus for treating plasma includes an inner chamber, an outer chamber receiving the inner chamber and including a gas supplier that supplies a gas into the inner chamber, an inner electrode disposed in the inner chamber, and a plasma generator supplying power independently to the inner electrode and the inner chamber.
摘要:
Integrated circuit devices including metal-insulator-metal (MIM) capacitors are provided. The MIM capacitors may include an upper electrode having first and second layers. The first layer of the upper electrode includes a physical vapor deposition (PVD) upper electrode and the second layer of the upper electrode includes an ionized PVD (IPVD) upper electrode on the PVD upper electrode. Related methods are also provided.