Abstract:
Semiconductor devices including a dummy gate structure on a fin are provided. A semiconductor device includes a fin protruding from a substrate. The semiconductor device includes a source/drain region in the fin, and a recess region of the fin that is between first and second portions of the source/drain region. Moreover, the semiconductor device includes a dummy gate structure overlapping the recess region, and a spacer that is on the fin and adjacent a sidewall of the dummy gate structure.
Abstract:
Semiconductor devices are provided. A semiconductor device includes a fin protruding from a substrate. Moreover, the semiconductor device includes first and second gate structures on the fin, and an isolation region between the first and second gate structures. The isolation region includes first and second portions having different respective widths. Related methods of forming semiconductor devices are also provided.
Abstract:
Semiconductor devices and methods of fabricating semiconductor devices are provided. The methods may include forming an interlayer insulation layer on a substrate. The interlayer insulation layer may surround a dummy silicon gate and may expose a top surface of the dummy silicon gate. The methods may also include recessing a portion of the interlayer insulation layer such that a portion of the dummy silicon gate protrudes above a top surface of the recessed interlayer insulation layer and forming an etch stop layer on the recessed interlayer insulation layer. A top surface of the etch stop layer may be coplanarly positioned with the top surface of the dummy silicon gate. The methods may further include forming a trench exposing the substrate by removing the dummy silicon gate using the etch stop layer as a mask.
Abstract:
Provided are methods for fabricating a semiconductor device. The methods include forming a hard mask pattern on a semiconductor substrate, forming a first trench having a first width and a second trench having a second width on the semiconductor substrate using the hard mask pattern as a mask, forming an oxide film on the hard mask pattern and the first and second trenches, forming first and second isolation films on the first and second trenches by planarizing the oxide film until the hard mask pattern is exposed, and etching the first isolation film by a first thickness by performing dry cleaning on the semiconductor substrate and etching the second isolation film by a second thickness different from the first thickness.
Abstract:
A semiconductor device includes a gate spacer defining a trench. The trench includes a first part and a second part sequentially positioned on a substrate. An inner surface of the first part has a slope of an acute angle and an inner surface of the second part has a slope of a right angle or obtuse angle with respect to the substrate. A gate electrode fills at least a portion of the trench.
Abstract:
Semiconductor devices are provided. A semiconductor device includes a fin protruding from a substrate. Moreover, the semiconductor device includes first and second gate structures on the fin, and an isolation region between the first and second gate structures. The isolation region includes first and second portions having different respective widths. Related methods of forming semiconductor devices are also provided.
Abstract:
A method for fabricating a semiconductor device may comprise forming a first transistor having a first threshold voltage in a first region of a substrate, forming a second transistor having a second threshold voltage less than the first threshold voltage in a second region of the substrate, forming a third interlayer insulating film in the third region, and planarizing the first transistor, the second transistor and the third interlayer insulating film. The first transistor may include a first gate electrode having a first height and a first interlayer insulating film having the first height, and the second transistor may include a second gate electrode having a second height shorter than the first height and a second interlayer insulating film having the second height. The third interlayer insulating film may have the first height.
Abstract:
Semiconductor devices may include a semiconductor substrate with a first semiconductor fin aligned end-to-end with a second semiconductor with a recess between facing ends of the first and second semiconductor fins. A first insulator pattern is formed adjacent sidewalls of the first and second semiconductor fins and a second insulator pattern is formed within the first recess. The second insulator pattern may have a top surface higher than a top surface of the first insulator pattern, such as to the height of the top surface of the fins (or higher or lower). First and second gates extend along sidewalls and a top surface of the first semiconductor fin. A dummy gate electrode may be formed on the top surface of the second insulator. Methods for manufacture of the same and modifications are also disclosed.
Abstract:
A method of forming a semiconductor device can include providing a plasma nitrided exposed top surface including an active region and an isolation region. The exposed top surface including the active region and the isolation region can be subjected to etching to form a deeper recess in the active region that in the isolation region and an unmerged epitaxial stress film can be grown in the deeper recess.
Abstract:
A chemical supplier includes a chemical reservoir containing a chemical mixture at a room temperature, an inner space of the chemical reservoir being separated from surroundings, a supply line through which the chemical mixture is supplied to a process chamber from the chemical reservoir, an inline heater positioned on the supply line and heating the chemical mixture in the supply line to a process temperature, and a power source driving the chemical mixture to move the chemical mixture toward the process chamber.