摘要:
Methods of forming integrated circuit devices according to embodiments of the present invention include forming a PMOS transistor having P-type source and drain regions, in a semiconductor substrate, and then forming a diffusion barrier layer on the source and drain regions. A silicon nitride layer is deposited on at least portions of the diffusion barrier layer that extend opposite the source and drain regions. Hydrogen is removed from the deposited silicon nitride layer by exposing the silicon nitride layer to ultraviolet (UV) radiation. This removal of hydrogen may operate to increase a tensile stress in a channel region of the field effect transistor. This UV radiation step may be followed by patterning the first and second silicon nitride layers to expose the source and drain regions and then forming silicide contact layers directly on the exposed source and drain regions.
摘要:
A method of forming a carbon nano-material layer may involve a cyclic deposition technique. In the method, a chemisorption layer or a chemical vapor deposition layer may be formed on a substrate. Impurities may be removed from the chemisorption layer or the chemical vapor deposition layer to form a carbon atoms layer on the substrate. More than one carbon atoms layer may be formed by repeating the method.
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:
Analog capacitors, and methods of fabricating the same, include a lower electrode having a lower conductive layer, a capacitor dielectric layer on the lower conductive layer, and an upper electrode on the capacitor dielectric layer to be opposite to the lower electrode, wherein the upper electrode includes at least an upper conductive layer in contact with the capacitor dielectric layer, wherein the upper conductive layer has a resistivity higher than that of the lower conductive layer.
摘要:
A semiconductor device having an etch stop layer and a method of fabricating the same are provided. The semiconductor device may include a substrate and a first gate electrode formed on the substrate. An auxiliary spacer may be formed on the sidewall of the first gate electrode. An etch stop layer may be formed on the substrate having the auxiliary spacer. The etch stop layer and the auxiliary spacer may be formed of a material having a same stress property.
摘要:
Trench isolation methods include forming a first trench and a second trench, having a larger width than the first trench, in a semiconductor substrate. A lower isolation layer is formed having a first thickness on an upper sidewall of the first trench and a second thickness on an upper sidewall of the second trench using a first high density plasma deposition process, the second thickness being greater than the first thickness. An upper isolation layer is formed on the semiconductor substrate including the lower isolation layer using a second high density plasma deposition process, different from the first high density plasma deposition process. The first and second high density plasma deposition processes may be chemical vapor deposition processes. Semiconductor devices including a trench isolation structure are also provided.
摘要:
A capacitor includes an upper electrode formed by physical vapor deposition and chemical vapor deposition. The upper electrode of the capacitor may include a first upper electrode formed by chemical vapor deposition and a second upper electrode formed by physical vapor deposition. Alternatively, the upper electrode may include a first upper electrode formed by physical vapor deposition and a second upper electrode formed by chemical vapor deposition. The upper electrode of the capacitor is formed through two steps using chemical vapor deposition and physical vapor deposition. Therefore, the upper electrode can be thick and rapidly formed, whereby electrical characteristics of the upper electrode are not deteriorated.
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:
A semiconductor device having an etch stop layer and a method of fabricating the same are provided. The semiconductor device may include a substrate and a first gate electrode formed on the substrate. An auxiliary spacer may be formed on the sidewall of the first gate electrode. An etch stop layer may be formed on the substrate having the auxiliary spacer. The etch stop layer and the auxiliary spacer may be formed of a material having a same stress property.
摘要:
Provided is a capacitor of a semiconductor device. The capacitor includes a capacitor lower electrode disposed on a semiconductor substrate. A first dielectric layer comprising aluminum oxide (Al2O3) is disposed on the capacitor lower electrode. A second dielectric layer comprising a material having a higher dielectric constant than that of aluminum oxide is disposed on the first dielectric layer. A third dielectric layer comprising aluminum oxide is disposed on the second dielectric layer. A capacitor upper electrode is disposed on the third dielectric layer. The capacitor of the present invention can improve electrical properties. Thus, power consumption can be reduced and capacitance per unit area is high enough to achieve high integration.