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 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:
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 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 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:
A method of forming a semiconductor device includes forming a gate electrode and source/drain regions in a semiconductor substrate, forming a first capping nitride layer covering the gate electrode and the source/drain regions, the first capping nitride layer including a Si—H rich SiN layer, annealing the semiconductor substrate having the first capping nitride layer, and removing the first capping nitride layer.
摘要:
A transistor includes a silicon germanium channel layer formed on a portion of a single crystalline silicon substrate. The silicon germanium channel layer includes a Si—H bond and/or a Ge—H bond at an inner portion or an upper surface portion thereof. A PMOS transistor is provided on the silicon germanium channel layer. A silicon nitride layer is provided on surface portions of the single crystalline silicon substrate, the silicon germanium channel layer and the PMOS transistor for applying a tensile stress. The MOS transistor shows good operating characteristics.
摘要:
A transistor includes a silicon germanium channel layer formed on a portion of a single crystalline silicon substrate. The silicon germanium channel layer includes a Si—H bond and/or a Ge—H bond at an inner portion or an upper surface portion thereof. A PMOS transistor is provided on the silicon germanium channel layer. A silicon nitride layer is provided on surface portions of the single crystalline silicon substrate, the silicon germanium channel layer and the PMOS transistor for applying a tensile stress. The MOS transistor shows good operating characteristics.
摘要:
Methods of forming integrated circuit devices include forming a PMOS transistor having a SiGe channel region therein and then exposing at least a portion of the PMOS transistor to a hydrogen plasma. A tensile stress layer may be formed on the PMOS transistor. The exposing step may include exposing source and drain regions of the PMOS transistor to the hydrogen plasma.