Abstract:
A silicon carbide (SiC) film for use in backend processing of integrated circuit (100) manufacturing is generated by including hydrogen in the reaction gas mixture. This SiC containing film is suitable for integration into etch stop layers, dielectric cap layers and hard mask layers in interconnects of integrated circuits.
Abstract:
Interconnects of integrated circuits (ICs) (100) utilize low-k dielectrics, copper metal lines, dual damascene processing and amplified photoresist chemistry to build ICs with features smaller than 100 nm. Photolithographic processing of interconnects with these elements are subject to resist poisoning from nitrogen in etch stop and hard mask dielectric layers. Attempts to solve this problem cause lower IC circuit performance or higher fabrication process cost and complexity. This invention comprises a method of fabricating interconnects in an IC using layers of silicon carbide doped oxide (SiCO) in a via etch stop layer, in a trench etch stop layer, as a via etch hard mask and as a trench etch hard mask.
Abstract:
By removing excess material of an interlayer dielectric material (207, 307) deposited by SACVD, the gap filling capabilities of this deposition technique may be exploited, while, on the other hand, negative effects of this material may be reduced. In other aspects, a buffer material (360), such as silicon dioxide, may be formed prior to depositing the interlayer dielectric material (207, 307) on the basis of SACVD, thereby creating enhanced uniformity during the deposition process when depositing the interlayer dielectric material (207, 307) on dielectric layers having different high intrinsic stress levels. Consequently, the reliability of the interlayer dielectric material (207, 307) may be enhanced while nevertheless maintaining the advantages provided by an SACVD deposition.
Abstract:
In accordance with the principles of the invention, semiconductor devices (100) and methods of making semiconductor devices and dielectric stack (101) in an integrated circuit are provided. The method of forming a dielectric stack in an integrated circuit can include providing a semiconductor structure (170) including one or more copper interconnects and forming an etch stop layer (110) over the semiconductor structure in a first processing chamber. The method can also include forming a thin silicon oxide layer (120) over the etch stop layer in the first processing chamber and forming an ultra low-k dielectric layer (130) over the thin silicon oxide layer in a second processing chamber, wherein forming the thin silicon oxide layer improves adhesion between the etch stop layer and the ultra low-k dielectric as compared to a dielectric stack that is devoid of the thin silicon oxide layer between the etch stop layer and the ultra low-k dielectric.
Abstract:
La présente invention concerne des couches diélectriques à faible constante diélectrique et utilisables pour séparer des interconnexions métalliques notamment lors de la fabrication de circuits intégrés (dans la partie dite BEOL du circuit) . Selon l'invention, la couche diélectrique comporte du SiC et/ou du SiOC, et est obtenue à partir d'au moins un précurseur comportant au moins une chaîne -Si-C n -Si avec n≥l
Abstract translation:本发明涉及具有低介电常数的电介质层,所述层用于分离金属互连,特别是在集成电路板(在电路的BEOL部分)的制造中。 根据本发明,电介质层包括SiC和/或SiOC,并且由至少一种前体组成,其中n至少包含至少一个-Si-C n -Si链,其中n = 1。
Abstract:
Sequential processes are conducted in a batch reaction chamber to form ultra high quality silicon-containing compound layers, e.g., silicon nitride layers, at low temperatures. Under reaction rate limited conditions, a silicon layer is deposited (690) on a substrate using trisilane as the silicon precursor. Trisilane flow is interrupted (692). A silicon nitride layer is then formed (694) by nitriding the silicon layer with nitrogen radicals, such as by pulsing the plasma power (remote or in situ) on after a trisilane step. The nitrogen radical supply is stopped (696). Optionally non-activated ammonia is also supplied, continuously or intermittently. If desired, the process is repeated for greater thickness, purging the reactor after each trisilane and silicon compounding step to avoid gas phase reactions, with each cycle producing about 5-7 angstroms of silicon nitride.
Abstract:
A method and apparatus are included that provide an improved deposition process for a Tunable Etch Resistant ARC (TERA) layer with improved wafer to wafer uniformity and reduced particle contamination. More specifically, the processing chamber is seasoned to reduce the number of contaminant particles generated in the chamber during the deposition of the TERA layer and improve wafer to wafer uniformity. The apparatus includes a chamber having an upper electrode at least one RF source, a substrate holder, and a showerhead for providing multiple precursors and process gasses.
Abstract:
A method of preparing a thin film on a substrate (152, 252, 30') is described. The method comprises forming an ultra-thin hermetic film (40', 71, 622, 762, 812, 832) over a portion of a substrate (152, 252, 30') using a gas cluster ion beam (GCIB) (128), wherein the ultra-thin hermetic film (40', 71, 622, 762, 812, 832) has a thickness less than approximately 5 nm. The method further comprises providing a substrate (152, 252, 30') in a reduced-pressure environment, and generating a GCIB (128) in the reduced-pressure environment from a pressurized gas mixture. A beam acceleration potential and a beam dose are selected to achieve a thickness of the thin film (40', 71, 622, 762, 812, 832) less than about 5 nanometers (nm). The GCIB (128) is accelerated according to the beam acceleration potential, and the accelerated GCIB is irradiated onto at least a portion of the substrate (152, 252, 30') according to the beam dose. By doing so, the thin film (40', 71, 622, 762, 812, 832) is formed on the at least a portion of the substrate (152, 252, 30') to achieve the thickness desired.