摘要:
In sophisticated approaches for forming high-k metal gate electrode structures in an early manufacturing stage, a threshold adjusting semiconductor alloy may be deposited on the basis of a selective epitaxial growth process without affecting the back side of the substrates. Consequently, any negative effects, such as contamination of substrates and process tools, reduced surface quality of the back side and the like, may be suppressed or reduced by providing a mask material and preserving the material at least during the selective epitaxial growth process.
摘要:
A strain-inducing semiconductor alloy may be formed on the basis of cavities which may have a non-rectangular shape, which may be maintained even during corresponding high temperature treatments by providing an appropriate protection layer, such as a silicon dioxide material. Consequently, a lateral offset of the strain-inducing semiconductor material may be reduced, while nevertheless providing a sufficient thickness of corresponding offset spacers during the cavity etch process, thereby preserving gate electrode integrity. For instance, P-channel transistors may have a silicon/germanium alloy with a hexagonal shape, thereby significantly enhancing the overall strain transfer efficiency.
摘要:
An electronic fuse may receive a silicon/germanium material in the fuse body, which in turn may result in the formation of a metal silicide material of reduced thickness. Consequently, the current density and, thus, the electromigration and heat generation in the metal silicide material may be increased for a given amount of current. Consequently, transistor switches for applying the programming pulse to the electronic fuse may be reduced in size.
摘要:
When forming sophisticated gate electrode structures requiring a threshold adjusting semiconductor alloy for one type of transistor, a recess is formed in the corresponding active region, thereby providing superior process uniformity during the deposition of the semiconductor material. Moreover, the well dopant species is implanted after the recessing, thereby avoiding undue dopant loss. Due to the recess, any exposed sidewall surface areas of the active region may be avoided during the selective epitaxial growth process, thereby significantly contributing to enhanced threshold stability of the resulting transistor including the high-k metal gate stack.
摘要:
In a stacked chip configuration, the “inter chip” connection is established on the basis of functional molecules, thereby providing a fast and space-efficient communication between the different semiconductor chips.
摘要:
Performance of P-channel transistors may be enhanced on the basis of an embedded strain-inducing semiconductor alloy by forming a gate electrode structure on the basis of a high-k dielectric material in combination with a metal-containing cap layer in order to obtain an undercut configuration of the gate electrode structure. Consequently, the strain-inducing semiconductor alloy may be formed on the basis of a sidewall spacer of minimum thickness in order to position the strain-inducing semiconductor material closer to a central area of the channel region.
摘要:
In sophisticated semiconductor devices, transistors may be formed on the basis of a high-k metal gate electrode structure provided in an early manufacturing phase, wherein an efficient strain-inducing mechanism may be implemented by using an embedded strain-inducing semiconductor alloy. In order to reduce the number of lattice defects and provide enhanced etch resistivity in a critical zone, i.e., in a zone in which a threshold voltage adjusting semiconductor alloy and the strain-inducing semiconductor material are positioned in close proximity, an efficient buffer material or seed material, such as a silicon material, is incorporated, which may be accomplished during the selective epitaxial growth process.
摘要:
Disclosed herein are various methods of forming a layer of silicon on a layer of silicon/germanium. In one example, a method disclosed herein includes forming a silicon/germanium material on a semiconducting substrate, after forming the silicon/germanium material, performing a heating process to raise a temperature of the substrate to a desired silicon formation temperature while flowing a silicon-containing precursor and a chlorine-containing precursor into the deposition chamber during the heating process, and, after the temperature of the substrate reaches the desired silicon formation temperature, forming a layer of silicon on the silicon/germanium material.
摘要:
In sophisticated semiconductor devices, the defect rate that may typically be associated with the provision of a silicon/germanium material in the active region of P-channel transistors may be significantly decreased by incorporating a carbon species prior to or during the selective epitaxial growth of the silicon/germanium material. In some embodiments, the carbon species may be incorporated during the selective growth process, while in other cases an ion implantation process may be used. In this case, superior strain conditions may also be obtained in N-channel transistors.
摘要:
A silicon dioxide material may be provided in sophisticated semiconductor devices in the form of a double liner including an undoped silicon dioxide material in combination with a high density plasma silicon dioxide, thereby providing reduced dependency on pattern density. In some illustrative embodiments, the silicon dioxide double liner may be used as a spacer material and as a hard mask material in process strategies for incorporating a strain-inducing semiconductor material.