摘要:
A memory device having a metal nanocrystal charge storage structure and a method for its manufacture. The memory device may be manufactured by forming a first oxide layer on the semiconductor substrate, then disposing a porous dielectric layer on the oxide layer and disposing a second oxide layer on the porous dielectric layer. A layer of electrically conductive material is formed on the second layer of dielectric material. An etch mask is formed on the electrically conductive material. The electrically conductive material and the underlying dielectric layers are anisotropically etched to form a dielectric structure on which a gate electrode is disposed. A metal layer is formed on the dielectric structure and the gate electrode and treated so that portions of the metal layer diffuse into the porous dielectric layer. Then the metal layer is removed.
摘要:
An exemplary embodiment is related to a method of using an adhesion precursor in an integrated circuit fabrication process. The method includes providing a gas of material over a dielectric material and providing a copper layer over an adhesion precursor layer. The adhesion precursor layer is formed by the gas, and the dielectric material includes an aperture.
摘要:
In forming an opening or space in a substrate, a layer of photoresist is provided on the substrate, and the photoresist is patterned to provide photoresist bodies having respective adjacent sidewalls. A polymer layer is provided on the resulting structure through a low temperature conformal CVD process. The polymer layer is anisotropically etched to form spacers on the respective adjacent sidewalls of the photoresist bodies. The substrate is then etched using the spacers as a mask.
摘要:
A method and system for insulating a lower layer of a semiconductor device from an upper layer of the semiconductor device is disclosed. The method and system include providing an interlayer dielectric on the lower layer. The interlayer dielectric is capable of gap filling while using only species of relatively low mobility. The method and system also include planarizing a surface of the interlayer dielectric.
摘要:
A method of forming a metal or metal nitride layer interface between a copper layer and a silicon nitride layer can include providing a metal organic gas or metal/metal nitride precursor over a copper layer, forming a metal or metal nitride layer from reactions between the metal organic gas or metal/metal nitride precursor and the copper layer, and depositing a silicon nitride layer over the metal or metal nitride layer and copper layer. The metal or metal nitride layer can provide a better interface adhesion between the silicon nitride layer and the copper layer. The metal layer can improve the interface between the copper layer and the silicon nitride layer, improving electromigration reliability and, thus, integrated circuit device performance.
摘要:
An ultra-large scale integrated circuit is manufactured by using silicon-based, low dielectric constant materials in which the dielectric constant has been reduced by spinning on the dielectric to silicon wafers, eliminating soft bake steps, and heating the wafers to about 400° C. for about one hour in a vacuum or inert atmosphere.
摘要:
A method of forming a damascene structure in a semiconductor device arrangement uses a low k dielectric material in an etch stop layer that overlays a metal interconnect layer. The etch stop layer protects the metal interconnect layer, made of copper, for example, during the etching of a dielectric layer that overlays the etch stop layer. Following the etching of the dielectric layer, which stops on the etch stop layer, the etch stop layer is then etched with a chemistry that does not damage the underlying copper in the metal interconnect layer. The lower dielectric constant material employed in the etch stop layer reduces the overall dielectric constant of the film, thereby improving the operating performance of the chip.
摘要:
The present invention provides a method for reducing the gate aspect ratio of a flash memory device. The method includes forming a tunnel oxide layer on a substrate; forming a polysilicon layer on the tunnel oxide layer; forming an insulating layer on the polysilicon layer; forming a control gate layer on the polysilicon layer; etching at least the tunnel oxide layer, the insulating layer, and the control gate layer to form at least two stack structures; forming a plurality of spacers at sides of the at least two stack structures; and filling at least one gap between the at least two stack structures with an oxide, where the control gate layer provides a gate aspect ratio which allows for a maximum step coverage by the oxide. In a preferred embodiment, the method uses nickel silicide instead of the conventional tungsten silicide in the control gate layers of the cells of the device. Nickel silicide has higher conductivity than conventional silicides, thus a thinner layer of nickel silicide may be used without sacrificing performance. Nickel silicide also has a lower barrier height for holes, thus maintaining a low contact resistance. With a thinner nickel silicide layer, the gate aspect ratio of the cells are lowered, allowing for a maximum step coverage by the gap-filling oxide. The reliability of the device is thus improved.
摘要:
A method is provided for inserting dummy conductive channels along with the interconnected conductive channels. The dummy channels have an approximately even metal weight distribution to provide better plating uniformity, minimize CMP dishing, improve process heating uniformity, improve spin-on process properties, and increase etch and lithography uniformity.
摘要:
A method for manufacturing an integrated circuit using damascene processes is provided in which conductive material surfaces subject to chemical-mechanical polishing are passivated after polishing with a dry, low energy, ion implantation passivating process to prevent oxidation and to eliminate a high dielectric constant protective layer. In particular, copper conductive material is subject to nitrogen implantation at or below 100 KeV to produce a protective copper nitride.