摘要:
In a semiconductor device and a method of manufacturing a semiconductor device, a lower electrode is formed on a semiconductor substrate. A first zirconium oxide layer is formed on the lower electrode by performing a first deposition process using a first zirconium source and a first oxidizing gas. A zirconium carbo-oxynitride layer is formed on the first zirconium oxide layer by performing a second deposition process using a second zirconium source, a second oxidizing gas and a nitriding gas, and an upper electrode is formed on the zirconium carbo-oxynitride layer. A zirconium oxide-based composite layer having a high dielectric constant and a thin equivalent oxide thickness can be obtained.
摘要:
In a semiconductor device and a method of manufacturing a semiconductor device, a lower electrode is formed on a semiconductor substrate. A first zirconium oxide layer is formed on the lower electrode by performing a first deposition process using a first zirconium source and a first oxidizing gas. A zirconium carbo-oxynitride layer is formed on the first zirconium oxide layer by performing a second deposition process using a second zirconium source, a second oxidizing gas and a nitriding gas, and an upper electrode is formed on the zirconium carbo-oxynitride layer. A zirconium oxide-based composite layer having a high dielectric constant and a thin equivalent oxide thickness can be obtained.
摘要:
In semiconductor devices and methods of manufacturing semiconductor devices, a zirconium source having zirconium, carbon and nitrogen is provided onto a substrate to form an adsorption layer of the zirconium source on the substrate. A first purging process is performed to remove a non-adsorbed portion of the zirconium source. An oxidizing gas is provided onto the adsorption layer to form an oxidized adsorption layer of the zirconium source on the substrate. A second purging process is performed to remove a non-reacted portion of the oxidizing gas. A nitriding gas is provided on the oxidized adsorption layer to form a zirconium carbo-oxynitride layer on the substrate, and a third purging process is provided to remove a non-reacted portion of the nitriding gas.
摘要:
In a method and an apparatus for forming metal oxide on a substrate, a source gas including metal precursor flows along a surface of the substrate to form a metal precursor layer on the substrate. An oxidizing gas including ozone flows along a surface of the metal precursor layer to oxidize the metal precursor layer so that the metal oxide is formed on the substrate. A radio frequency power is applied to the oxidizing gas flowing along the surface of the metal precursor layer to accelerate a reaction between the metal precursor layer and the oxidizing gas. Acceleration of the oxidation reaction may improve electrical characteristics and uniformity of the metal oxide.
摘要:
A semiconductor device including a substrate; a bottom electrode on the substrate; a first dielectric layer on the bottom electrode, the first dielectric layer including a first metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb; a second dielectric layer on the first dielectric layer, the second dielectric layer including a second metal oxide including at least one of Hf, Al, Zr, La, Ba, Sr, Ti, and Pb, wherein the first metal oxide and the second metal oxide are different materials; a third dielectric layer on the second dielectric layer, the third dielectric layer including a metal carbon oxynitride; and an upper electrode on the third dielectric layer.
摘要:
A capacitor unit includes a first capacitor and a second capacitor. The first capacitor includes a first lower electrode, a first dielectric layer pattern and a first upper electrode sequentially stacked. The first capacitor includes a first control layer pattern for controlling a voltage coefficient of capacitance (VCC) of the first capacitor between the first lower electrode and the first dielectric layer pattern. The second capacitor includes a second lower electrode, a second dielectric layer pattern and a second upper electrode sequentially stacked. The second lower electrode is electrically connected to the first upper electrode, and the second upper electrode is electrically connected to the second lower electrode. The second capacitor includes a second control layer pattern for controlling a VCC of the second capacitor between the second lower electrode and the second dielectric layer pattern.
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:
A semiconductor integrated circuit device includes a lower electrode formed on a substrate, a first dielectric layer formed of a metal nitride layer, a metal oxynitride layer, or a combination thereof, on the lower electrode, a second dielectric layer formed on the first dielectric layer that includes a zirconium oxide layer, and an upper electrode formed on the second dielectric layer.
摘要:
In a method and an apparatus for forming metal oxide on a substrate, a source gas including metal precursor flows along a surface of the substrate to form a metal precursor layer on the substrate. An oxidizing gas including ozone flows along a surface of the metal precursor layer to oxidize the metal precursor layer so that the metal oxide is formed on the substrate. A radio frequency power is applied to the oxidizing gas flowing along the surface of the metal precursor layer to accelerate a reaction between the metal precursor layer and the oxidizing gas. Acceleration of the oxidation reaction may improve electrical characteristics and uniformity of the metal oxide.
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.