Abstract:
Embodiments disclosed herein generally include methods for forming porous low k dielectric films. In one embodiment, a method of forming a porous low k dielectric film on a substrate using PECVD and in situ radical curing in a processing chamber is disclosed. The method includes introducing radicals into a processing region of the processing chamber, introducing a gas mixture into the processing region of the processing chamber, forming a plasma in the processing region and depositing the porous low k dielectric film on the substrate.
Abstract:
Embodiments of the disclosure generally provide multi-layer dielectric stack configurations that are resistant to plasma damage. Methods are disclosed for the deposition of thin protective low dielectric constant layers upon bulk low dielectric constant layers to create the layer stack. As a result, the dielectric constant of the multi-layer stack is unchanged during and after plasma processing.
Abstract:
A method and apparatus for depositing a low K dielectric film with one or more features is disclosed herein. A method of forming a dielectric layer can include positioning a substrate in a processing chamber, delivering a deposition gas to the processing chamber, depositing a dense organosilicon layer using the deposition gas on the surface of the substrate, the dense organosilicon layer comprising a porogenic carbon, transferring a pattern into the dense organosilicon layer, forming a pore-forming plasma from a reactant gas, exposing the dense organosilicon layer to the pore-forming plasma to create a porous organosilicon layer, wherein the pore-forming plasma removes at least a portion of the porogenic carbon and exposing the porous organosilicon layer to a desiccating post treatment.
Abstract:
Embodiments of the invention provide processes to selectively form a cobalt layer on a copper surface over exposed dielectric surfaces. Embodiments described herein control selectivity of deposition by preventing damage to the dielectric surface, repairing damage to the dielectric surface, such as damage which can occur during the cobalt deposition process, and controlling deposition parameters for the cobalt layer.
Abstract:
Embodiments of the present invention generally relate to methods for lowering the dielectric constant of low-k dielectric films used in semiconductor fabrication. In one embodiment, a method for lowering the dielectric constant (k) of a low-k silicon-containing dielectric film, comprising exposing a porous low-k silicon-containing dielectric film to a hydrofluoric acid solution and subsequently exposing the low-k silicon-containing dielectric film to a silylation agent. The silylation agent reacts with Si—OH functional groups in the porous low-k dielectric film to increase the concentration of carbon in the low-k dielectric film.
Abstract:
Methods of single precursor deposition of hardmask and ARC layers, are described. The resultant film is a SiOC layer with higher carbon content terminated with high density silicon oxide SiO2 layer with low carbon content. The method can include delivering a first deposition precursor to a substrate, the first deposition precursor comprising an SiOC precursor and a first flow rate of an oxygen containing gas; activating the deposition species using a plasma, whereby a SiOC containing layer over an exposed surface of the substrate is deposited. Then delivering a second precursor gas to the SiOC containing layer, the second deposition gas comprising different or same SiOC precursor with a second flow rate and a second flow rate of the oxygen containing gas and activating the deposition gas using a plasma, the second deposition gas forming a SiO2 containing layer over the hardmask, the SiO2 containing layer having very low carbon.
Abstract:
Embodiments described herein provide a method for sealing a porous low-k dielectric film. The method includes forming a sealing layer on the porous low-k dielectric film using a cyclic process. The cyclic process includes repeating a sequence of depositing a sealing layer on the porous low-k dielectric film and treating the sealing layer until the sealing layer achieves a predetermined thickness. The treating of each intermediate sealing layer generates more reactive sites on the surface of each intermediate sealing layer, which improves the quality of the resulting sealing layer.
Abstract:
Methods for making a low k porous dielectric film with improved mechanical strength are disclosed herein. A method of forming a dielectric layer can include delivering a deposition gas to a substrate in a processing chamber, the deposition gas comprising an acrylate precursor with a UV active side group and an oxygen containing precursor; activating the deposition gas to deposit an uncured carbon-containing layer on a surface of the substrate; and delivering UV radiation to the uncured carbon-containing layer to create a cured carbon-containing layer, the UV active side group crosslinking with a second group.
Abstract:
Embodiments of the present invention generally provide a method and apparatus for forming a low-k dielectric porous silicon oxycarbon layer within an integrated circuit. In one embodiment, a method is provided for depositing a porogen and bulk layer containing silicon oxycarbon layer, selectively removing the porogens from the formed layer without simultaneously cross-linking the bulk layer, and then cross-linking the bulk layer material. In other embodiments, methods are provided for depositing multiple silicon oxycarbon sublayers, selectively removing porogens from each sub-layer without simultaneously cross-linking the bulk material of the sub-layer, and separately cross-linking the sub-layers.
Abstract:
Embodiments of the present invention provide a film stack and method for depositing an adhesive layer for a low dielectric constant bulk layer without the need for an initiation layer. A film stack for use in a semiconductor device comprises of a dual layer low-K dielectric deposited directly on an underlying layer. The dual low-K dielectric consists of an adhesive layer deposited without a carbon free initiation layer.